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Patrick Boyle On Finance

23 Aug 2026 · 36m · 19 chapters

Episode artwork

How Much Would an AI Crash Destroy?

In short

The episode estimates how badly investors and the broader economy could be hit if the “AI trade” (AI-related stocks and infrastructure spending) deflates, arguing that diversification may not protect people as much as they think.

Guest backgrounds

No guests are interviewed; the host cites external experts and reports (e.g., Dean Baker, Gita Gopinath, Joseph Stiglitz, Jason Furman, BIS researchers, Goldman Sachs/Fed, Oliver Wyman, Wall Street Journal, Financial Times, Fitch).

Key claims

Two chip stocks (Micron, SK Hynix) drove 17% of global equity returns in May; AI concentration spreads beyond tech into utilities, real estate, and construction. Downside estimates for a “dot-com style” valuation reset range roughly $20–40T (plus foreign holdings), with knock-on effects via the wealth effect and AI-driven data-center spending. Reported AI capex may understate commitments by trillions (“AI spending iceberg”), raising risks in private credit.

Notable examples

Russell 2000 gains driven by semiconductor firms; value index rebalance that sold chips at the top; dot-com “dark fiber” and the railway mania analogy; Amazon’s ~90% stock drop despite surviving.

Written by AI. May contain mistakes.

Chapters

0:56

The Impact of AI on Market Dynamics

Explore how two memory chip companies significantly influenced global markets.

“Not 17 % of the chip sector, 17 % of everything.”
3:18

Understanding Market Exposure and Risks

Examining the risks associated with AI investments and their market impact.

“So, I am not here to tell you the crash is coming.”
4:19

The Broad Influence of AI Across Industries

Learn how AI is integrating into various sectors beyond tech.

“It is the closest the industry has to a free launch, and for most of history it has worked.”
7:11

Economic Ripple Effects of AI Wealth

Discussing how wealth generated by AI spreads through the economy.

“SpaceX, of course, was just the opening act.”
7:55

Estimating Potential Market Losses from an AI Crash

Analyzing potential wealth loss if the AI bubble bursts based on expert estimates.

“Which means the sensible question is, can you get out of the way of AI, or are we all stuck in a possible boom and bust cycle?”
14:00

The Scale of Potential Economic Damage

Learn about the potential financial impact of an AI-related crash.

“again, more than the entire US economy produces in a year.”
15:00

Shifting Wealth Dynamics

Discover how stock market dynamics have changed household wealth composition.

“According to Goldman Sachs and the Federal Reserve, stocks overtook real estate as the single biggest component of American household wealth this year, for the first time since the Second World War.”
16:00

The Wealth Effect Explained

Understand the wealth effect and how it influences consumer spending.

“people spend about three real dollars in the actual economy.”
17:10

AI's Influence on the Economy

Explore how AI spending impacts various sectors of the economy.

“Either way, an enormous share of recent economic growth is simply just data center construction.”
18:10

The Risks of AI Bubble

Learn about the potential risks associated with AI infrastructure spending.

“so a lot of households could get hit twice at once, their savings falling while their jobs get less secure.”
Show all 19 chapters
19:00

Hidden AI Commitments in Corporate Finance

Discover the hidden AI spending commitments that may signal risk.

“it just moves somewhere else with fewer rules.”
20:10

Private Credit Market Dynamics

Examine the state of the private credit market and its implications.

“Analysts have started calling it an AI spending iceberg.”
21:30

Lessons from Past Financial Crises

Reflect on past financial crises and their relevance to current trends.

“20 largest listed private credit funds have climbed to their highest level since 2017.”
22:40

AI's Impact on Investment Strategies

Discuss the challenges of investing in AI amidst market volatility.

“We're now re-running the experiment, presumably to confirm that the result replicates.”
24:10

Comparison with Historical Manias

Analyze the current AI boom in the context of historical investment manias.

“Hundreds of new railway lines were proposed, and the money involved was staggering.”
26:00

The Uncertainty of Future Investment Winners

Understand the difficulty of predicting long-term winners during a bubble.

“So much of it sat unused for years afterwards that the industry gave it a name, dark fiber.”
28:01

The Rise and Fall of Internet Search Giants

Learn about the historical context of the internet bubble and the emergence of Google.

“Every one of them is now a trivia question.”
29:47

Lessons on Market Timing and Diversification

Explore the pitfalls of timing the market and the importance of diversification in investing.

“Back in April 2022, the New York Times ran a piece called The Tech Bubble That Never Burst.”
35:21

The Dangers of Following Market Trends

Understand why following the latest market trends can lead to poor investment decisions.

“People often think diversification means owning 50 different technology stocks that all go up together.”
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Transcript

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0:00New and exclusive holiday decor just launched online at the Home Depot. Check out the viral Grand Duchess collection with smart holiday lights you can control from your phone. Easily customize the twinkle across trees, wreaths, and garlands to match your holiday vibe. Create stunning light effects, then switch it up with the tap of your fingers. Even the man in red will be impressed. Shop the holiday decor you want online only at homedepot.com. This episode is brought to you by Google Chrome. You think you know a browser, but Gemini and Chrome? That's new. It can help you with practically anything on the web, like restoring a vintage motorcycle from a 50-page restoration block, or finally break down that long article you've had open for weeks.

0:45Gemini and Chrome is here for it. Ready to make anything online make sense? There's no place like Chrome. Check responses set up required, compatibility and availability varies 18+. Back in May, Micron and SK Hynix, two memory chip companies, produced 17 % of the entire global stock market's return for the month. Not 17 % of the chip sector, 17 % of everything. Every listed company in every country added together. That's from a report by Acadian Asset Management. The global market they are measuring is the MSCI All Country World Index, which holds thousands of stocks across dozens of countries, and Micron and SK Hynix are about 1 % of it.

1:35So, for every dollar the global market rose in May, about 17 cents of it came from just those two stocks. This raises the awkward question, if two chip stocks that most people on the street have never heard of can haul the entire planet's equity markets upwards, what happens to your portfolio on the way back down? So today we are going to look at how exposed ordinary investors are to the AI trade, why the usual places to hide may not be working anymore, and roughly how much money would disappear if the whole thing fell apart. Now let me clarify something up front as we're going to spend a while looking at what happens if this all goes wrong.

2:22There's no consensus that it is going to all go wrong. Plenty of smart people think that we're standing at the start of an enormous boom, that AI is a real technology that's going to reshape the economy and eventually more than justify the money being poured into it. And they might well be right. In fact, you have to assume that most of the people involved believe exactly that, because it's the only thing that explains what they're doing. This is why investors are putting money in at these valuations. It's why the tech CEOs are committing hundreds of billions of dollars to data centres. No one spends like this unless they are convinced that the payoff is going to be huge.

3:07The optimists, to be really clear, aren't a fringe, they are the majority, and their optimism is the reason all of this exists in the first place. So, I am not here to tell you the crash is coming. Nobody knows that, and anyone who says that they do is guessing. In fact, later on we will look at some of the confident but wrong predictions from the past. What this video is about is trying to estimate the downside risk. If the bulls are right, everything works out fine and we'll all look back and wonder what all the fuss was about. But, if the bears are right, even if some of this turns out to be a bubble, it's worth looking at the estimates of how much is actually at stake, particularly when the party still on.

3:55So diversification, it is the one thing in finance everybody agrees is a good idea. Investors treat the world like a magical incantation, one which can protect them from market crashes, inflation, and poor decision making. You spread your money across lots of different things so that when one of them blows up the others keep your return steady. It is the closest the industry has to a free launch, and for most of history it has worked. A couple of years ago, the big worry amongst those who worry for a living was sector concentration in the S &P 500. The worry that seven companies, the magnificent seven, had grown so large that the index everyone thought of as the American stock market was really just seven tech stocks in a trench coat.

4:48The concern has since grown. It's no longer seven stocks that we have to worry about, but a whole sector, and a sector which famously doesn't stay in its lane. AI started out looking like a handful of tech giants, and it's worked its way into nearly everything. And I don't just mean the companies pretending to use it. The obvious ones are the chip makers, but it's also the utilities, as data centers need huge amounts of power, so a company whose job it is to keep the lights on in Ohio is now partially an AI stock, or at least its valuation is tied to the idea that data centers will soon become huge customers.

5:32It's real estate too, because someone has to own the warehouses full of servers, and its construction, as there is a huge boom in data center construction across the United States. The AI trade now employs electricians and lots of them. Then there is the money that the boom has already made. A few weeks ago, SpaceX went public, turning around 4 ,400 of its employees into millionaires overnight, including 400 of them who are now worth more than$100 million each. The people whose job it is to sell things to the rich notice this immediately. Estate agents in California and Texas reported a wave of inquiries about new homes.

6:19Private jet firms report extra business from those who wanted to celebrate the IPO with a trip somewhere. And apparently, the single most popular purchase after an event like this is a luxury watch, because as one watch dealer explained it, the share certificate sits in a brokerage account where nobody can see it, but the watch goes on your wrist. Which is a nice way of describing the urge to let strangers know how well everything's been going for you. The point is that the wealth doesn't stay with the AI workers. It disperses out into the whole economy, to estate agents, watch dealers, pilots, interior designers, the people who installed a wine cellar and the people who stock it.

7:05All of them now care about the AI trade, whether they put it this way or not. Your florist may have a position in Nvidia, she just doesn't call it that. SpaceX, of course, was just the opening act. Anthropic is expected to go public in October at a valuation of between$1 trillion and$2 trillion, and OpenAI is in this queue too. Employees don't all have to wait for the IPO either. According to the FT, OpenAI recently completed a near$7 billion tender offer, buying back shares from employees. So the watches, the jet charters and the new homes near the office don't have to wait for the bell to ring at NASDAQ.

7:50The money is already spilling out into the economy as we speak, one$7 billion buyback at a time. Which means the sensible question is, can you get out of the way of AI, or are we all stuck in a possible boom and bust cycle? New and exclusive holiday decor just launched online at the Home Depot. Check out the viral Grand Duchess collection with smart holiday lights you can control from your phone. Easily customize the twinkle across trees, wreaths, and garlands to match your holiday vibe. Create stunning light effects, then switch it up with the tap of your fingers. Even the man in red will be impressed.

8:31Shop the holiday decor you want online only at homedepot.com. This episode is brought to you by Google Chrome. You think you know a browser, but Gemini and Chrome? That's new. It can help you with practically anything on the web, like restoring a vintage motorcycle from a 50-page restoration block, or finally break down that long article you've had open for weeks. Gemini and Chrome is here for it. Ready to make anything online make sense? There's no place like Chrome. Check responses set up required, compatibility and availability varies 18+. Okay, so let's say you were worried about AI investment and bought small cap US stocks instead.

9:11Well, you're doing quite well. The Russell 2000 had its best first half since 1991, up around 22 percent. You might take that as a sign that small, ordinary American businesses are booming. In reality, 16 of the 50 best performers in the index are semiconductor and chip equipment firms. Companies like MaxLinear and Airtest Systems are up 250 and 380 percent respectively this year. You didn't dodge the AI boom, you bought the companies that sell it cables and testing gear. Or maybe you're a sensible value investor, you don't touch overpriced growth stocks, you bought the Russell 1000 value index, and right now you feel pretty clever because value is up about 20 % this year, while the growth index has actually fallen.

10:08Value investing, it seems, is back. The reason your value fund did so well this year is that until recently it was packed with high-flying semiconductor stocks – Micron, AMD, Western Digital – which had been on an enormous tear. Then, in late June, the index providers did their annual rebalance. They moved those chip stocks out of the value index and into the growth index, and moved Amazon, Apple and Microsoft the other way into value. And the timing was, by complete accident, absolutely perfect. The chips got sold right at the top of their run, just before they rolled over and the value index picked up the big tech names right as they were touching their lows.

10:54Nobody made any big decisions here, a calendar reminder did it. A value fund manager quoted in the Wall Street Journal could only stand back and admire how it had worked. It was like the index got so lucky, he said. It caught that blow off top in momentum and then sold it right before they rolled over, which I imagine is a slightly painful thing to say out loud if your actual job is picking value stocks and the mechanical rebalance just did a better job than you. So, as a value investor, you did well twice over. you made money on the chips and sold them at the top. The only small catch is where it left you.

11:37Your sensible value portfolio is now stuffed with Amazon, Apple and Microsoft, three of the biggest tech companies on earth, and quite possibly the exact stocks you bought a value fund to avoid owning. You escaped the AI trade and landed in what was effectively the AI trade wearing a false mustache. So, if you are stuck in this trade, whether you want to be in it or not, the obvious question to ask is how much money are we talking about? If the AI bubble deflates, how much wealth is likely to be wiped out? Well, let's start with the economist Dean Baker who runs a website called the AI Bubble Monitor, which sounds like a relaxing website to check over your morning coffee, right next to the weather report.

12:26Baker's arithmetic goes like this. The total US stock market is worth around 80 trillion dollars. If price to earnings ratios simply drifted back to their long run average, not a crash, just a return to normal valuations, that would erase something like 40 trillion dollars of stock market wealth, which he notes averages out to nearly$300 ,000 per US household. Now, we need to be careful with the per-household figure like that, as it's an average and averages can be sneaky. Stock ownership in America is wildly lopsided. The richest 10 % of households own something like 90 % of the shares. So, if Elon Musk lost, say,$200 billion from SpaceX, and your neighbor lost 4 ,000.

13:17The average loss is a very impressive number that describes almost nobody. The typical household would lose far less for the simple reason that the typical household doesn't have$300 ,000 in stocks to lose in the first place. So, let's get some other opinions. Gita Gopnet, the former chief economist at the IMF, reckons a dot-com style correction today would destroy about$20 trillion of American wealth, plus another$15 trillion in wealth held by foreigners. That American$20 trillion is roughly 70 % of US GDP. consultants at Oliver Wyman ran their own version and landed near$33 trillion of value wiped out, again, more than the entire US economy produces in a year.

14:13And then, for a number that puts those estimates in perspective, when the actual dot-com bubble burst, it destroyed about$6 trillion of equity value. So, the mainstream estimates for this one run somewhere between five and six times the size of the crash many of us still reach for as a cautionary tale. So, three different methods that all land in the tens of trillions of dollars. We can at least agree on the order of magnitude of the potential hole. Now, you might reasonably say, so what? It's paper wealth anyhow. If your retirement account falls by$100 ,000, you have no less cash in your pocket this morning than you did yesterday.

14:59That is true, but it matters anyway, and it matters more now than it used to. According to Goldman Sachs and the Federal Reserve, stocks overtook real estate as the single biggest component of American household wealth this year, for the first time since the Second World War. For most of modern history, the average family's net worth was mostly their house. So, a stock market crash was mainly a rich person's problem. That is no longer the case. The stock market is now where the median household's wealth actually lives, which means a crash today reaches into the middle of the country in a way that it didn't in 2000.

15:45That's then where the wealth effect comes in. When people log into their brokerage accounts and see a big number, they feel rich and they spend more. The nicer car, the kitchen, the holiday. The research rule of thumb is that for every hundred dollars of paper stock wealth, people spend about three real dollars in the actual economy. It may not sound like much until you multiply it by tens of trillions of dollars. And the whole thing runs in reverse too, just as reliably. If 30 odd trillion dollars of household wealth were to evaporate, people would drastically slash their spending. The new kitchen gets cancelled, the contractor loses his job, the car salesman has a dreadful quarter, the dealership lays someone off.

16:35The damage cascades out from the stock market into the real economy without a single bank having to fail. It just requires people to feel a bit poorer. The problem for anyone who thinks they are safely on the sidelines is that AI is now propping up whole chunks of the non-AI economy. Harvard's Jason Furman calculated that AI-related infrastructure spending accounted for something like 90 % of America's economic growth in the first half of last year. More conservative estimates put it at around a quarter. Either way, an enormous share of recent economic growth is simply just data center construction.

17:19So, think about who depends on that spending continuing. It isn't just NVIDIA shareholders, it's the electricians we talked about at the top of the video, it's the construction crews pouring the concrete, it's the firms that make the air conditioning units that stop the servers from cooking themselves, it's the people running the cables, manufacturing the transformers, and driving the trucks, even the astronauts installing them in outer space. If AI capital spending slows, all of those people see their income slow with it, and not one of them needs to have ever bought a single share of anything.

17:59The Nobel laureate Joseph Stiglitz puts the grim vision plainly. A crash like this would land at the same moment AI starts displacing workers, so a lot of households could get hit twice at once, their savings falling while their jobs get less secure. As he put it, the breaking of any bubble is really bad in the short term for the macroeconomy, which from a Nobel economist is practically a scream. Now, if your mind is going to 2008 at this point, you might be worrying a bit too much. The big banks are in much better shape than they were back then. They hold far more capital, they've got real liquidity buffers, and they get stress-tested every year.

18:46There is no reason to expect a repeat of Lehman Brothers. But the reason it isn't a banking story is that we made the bank safer, and when you make one part of the financial system safer, the risky lending doesn't necessarily stop, it just moves somewhere else with fewer rules. A few weeks ago the Wall Street Journal published an analysis with the wonderful title, Why Big Tech's AI Spending is$3 trillion higher than it seems. They reported that every quarter the big tech companies proudly report their capital spending on AI. The data centers, the chips, all of it. That reported figure across the whole group is about$600 billion over the last year.

19:32Here's the problem though. The journal went through the footnotes of these companies' filings and found roughly$3 trillion of additional AI commitments that don't appear on the balance sheet at all. Five times the capex everyone has been staring at. These are things like long-term leases on data centers and locked-in purchase commitments for chips, computing power and energy, money that the companies are absolutely on the hook to spend, tucked away in the footnotes rather than sitting on the balance sheet where you might think you would find it. Alphabet alone has over$800 billion of this type of purchase commitment.

20:13Analysts have started calling it an AI spending iceberg. The enormous part above the water turns out to be the small part. None of this is technically hidden, and none of it is illegal. It's all disclosed if you happen to be the sort of person who reads footnotes. But it means that the true scale of what these companies have promised to spend is far bigger than the headline numbers suggest, and every dollar of it rests on the assumption that the AI revenues will eventually turn up to pay for it. The market has started to notice. The cost of insuring big tech's debt against default has hit record highs recently, and when the companies at the center of all this start to strain, the pressure travels to wherever the lending happened, which brings us to private credit.

21:07Over the past few years, private credit funds, lightly regulated outfits that lend directly to companies outside the traditional banking system, have poured money into the AI and software world. This is now something like a$2-3 trillion market, and it has started to creak. The Financial Times reported this month that troubled loans at the 20 largest listed private credit funds have climbed to their highest level since 2017. Fitch says private credit defaults hit a record in July. One large fund reported that 7 % of its entire loan book was in trouble. The co-head of one of the big lenders told investors more or less that the denial phase is over.

21:56Now, we have to be fair, many people think that this is overblown too, pointing out that the default rates we are talking about are still low in absolute terms, and if the lenders recover most of their money, the actual losses are still small. So there is no catastrophe today. The worry however isn't the current number, it's the direction the number is moving in, and the fact that private credit is deliberately hard to see into. In a lightly regulated, opaque corner of finance, nobody quite knows who is holding the risky loans until something goes wrong and everyone finds out at the same time.

22:38We ran this exact experiment in 2008 with a different set of acronyms, and it didn't go especially well. We're now re-running the experiment, presumably to confirm that the result replicates. Now, whenever you point any of this stuff out, someone always turns up in the comments within about 90 seconds to say that none of this matters because AI is a real technology that's going to change the world, and they may well be right. There might be huge productivity gains in the pipeline. Businesses, just to be clear, already find AI really useful. But here's the uncomfortable thing. The technology, being real and useful and world-changing, still does absolutely nothing to protect you if you initially overpaid for the stock.

23:29Good businesses and good investments are totally different things. The Bank for International Settlements put out a report recently comparing the current AI build-out to the British railway mania of the 1840s, and they weren't being flattering. Trains were, obviously, a real and transformative technology. They changed the world, how people travelled, how goods moved, where people lived. Investors in the 1840s who understood how important this technology was got extremely excited and did exactly what investors always do, which is to take a good idea and overdo it. Hundreds of new railway lines were proposed, and the money involved was staggering.

24:16By 1850, cumulative investment in railways had reached close to half of Britain's entire GDP. The snag was that in all the excitement, companies started laying down expensive railway track to tiny villages that turned out to contain almost no passengers. Amazing engineering, but nobody on the platform, which as a business model has some well-documented weaknesses. By 1850, railway shares had lost about two-thirds of their value. The tracks remained in place, the trains ran, the technology went on to power a century of British industrial dominance, but the people who paid for it were wiped out.

25:01The railways changed the world, the railway investors changed their spending habits. This pattern is what the BIS is worried about. According to their research, relative to where each boom started, the AI build out has already grown faster than the railway mania, faster than the electrification boom of the 1920s and faster than the dot-com bubble. On their chart, it's the steepest line of the lot. Those earlier manias tended to break around year 5 and then drag their economies into a recession. We're currently at year 3, so there's plenty of time left to go. For a more recent example, we can look at the dot-com bubble.

25:46The internet, once again, was real. No one's claiming that it turned out to be a fad. And at the time, telecom companies were so certain that the future would need infinite bandwidth that they borrowed huge sums of money and laid tens of millions of miles of fiber optic cable across the country. So much of it sat unused for years afterwards that the industry gave it a name, dark fiber. They built the road system for the modern internet roughly a decade before there was enough traffic to justify it, and most of them went bankrupt waiting for the eventual revenues. When that bubble burst, the S &P 500 fell by about half and the Nasdaq lost nearly 80%.

26:31But here's the part that really matters for anyone who thinks they can outsmart this by simply buying the eventual winner. Even if you picked correctly, even if you identified the single best company of the entire era, it could still ruin your decade. Amazon is the obvious example of a winner that you could have picked. Amazon survived the crash and became one of the most valuable companies in human history, but its stock still fell about 90 % when the bubble burst. If you bought at the peak in 1999, you were absolutely right about the future of online commerce and you then would have had to wait until 2009 to get back to breakeven on your investment.

27:18Being right cost you a decade. Jeff Bezos' own letter to shareholders about that year opened with a single word – ouch. It's worth noting that there are very few people who would have bought just Amazon either. In the typical tech investors portfolio in 1999, along with Amazon was a basket of stocks like Pets.com that all went to zero, diluting their long-term return significantly. For investors, the hard part isn't believing in the technology, it's picking which specific company is going to win while you're standing inside the bubble. If you cast your mind back to the late 90s and you're convinced the internet is the future and you're right about that and you started looking for a company that will own internet search, the obvious choice at the time might have been Infoseek or Lycos or AltaVista or Excite, the biggest, best-funded search leaders that had become household names.

28:22Every one of them is now a trivia question. The company that eventually won Google barely existed during the bubble and only came to prominence in the early 2000s, after the bubble had burst. It's very easy, looking backwards, to assume today's winners were always destined to win. But history is fairly blunt on this topic. Being first to build a transformative technology mostly just makes you a very expensive rough draft for whatever shows up later.

29:08wreaths, and garlands to match your holiday vibe. Create stunning light effects, then switch it up with the tap of your fingers. Even the man in red will be impressed. Shop the holiday decor you want online only at homedepot.com. This episode is brought to you by Google Chrome. You think you know a browser, but Gemini and Chrome? That's new. It can help you with practically anything on the web, like restoring a vintage motorcycle from a 50-page restoration block, or finally break down that long article you've had open for weeks. Gemini and Chrome is here for it. Ready to make anything online make sense?

29:44There's no place like Chrome. Check responses set up required, compatibility and availability varies 18+. ...and actually makes the money. Now, before you take any of this as a signal to sell everything you own to buy canned food and guns, I want to give you the other warning too, as calling the top on tech is a game people have been losing for quite some time too. Back in April 2022, the New York Times ran a piece called The Tech Bubble That Never Burst. It laid out a full decade of famous investors sounding the alarm on tech and being wrong over and over again. In 2011, the entrepreneur Steve Blank announced we were in a second internet net bubble and that the signals are loud and clear.

30:32In 2014, the VC investor Marc Andreessen warned that high burn startups would, and he wrote this in all caps, vaporize. In 2015, Marc Cuban declared that this bubble was worse than the tech bubble of 2000. In 2016, the veteran investor Jim Breyer saw blood in the water, predicting that 90 % of unicorns would be repriced or die. And in 2021, Jeremy Grantham, a legendary investor who has correctly called some of history's great bubbles, promised that this one too would burst in due time. The bit I love though is that the New York Times published that article in April 2022, which was more or less the exact month that tech stocks began one of their worst declines in a generation.

31:25The Nasdaq fell by about a third that year, so the definitive piece on doom mongers always being wrong came out at almost the precise moment the doom mongers were briefly right. And that is the whole problem in one story. The bears are usually early, frequently wrong, and then occasionally, with no warning, they are right. And by that point most people have stopped listening. Which is exactly why this video isn't a prediction and why sell everything is not the lesson. In fact if you had bought at the highs in 1999 or right before the credit crunch or right before Covid and just held on till now you will have done just fine.

32:09And the problem with selling early or even selling in a timely manner is that it's very difficult to time rebuying. So if nobody can time this, the lesson is something much more boring than that. Jason Zweig wrote a column in the Wall Street Journal a little while back, making the case that if you actually want to get some distance from the AI trade, one place to look is Europe. He was not especially flattering about it. He called the continent, and I'm quoting here, an open-air museum of aging populations and arthritic economies, which is a rough sentence to read if you live in Europe and would make for a fairly grim tourism campaign.

32:52But the unflattering description is sort of the whole point. European stocks are cheap precisely because so few people are excited about them. Tech is only about 10 % of the European index versus nearly half of the S &P 500. And value investors are looking there exactly because the excitement and the high prices that come with it simply hasn't arrived. Instead of AI and Mars colonization, the index is mostly banks, industrial manufacturers and healthcare companies, the sort that generates steady cash and pay you a dividend of around 3 % while you wait. And to be fair to Europe, this isn't just buy the boring stuff and hope for the best.

33:39Zweig quotes a fund manager at Fidelity, who describes the 3 % dividend as the ballast you'd look for if the AI story fails to meet expectations. The idea being that if the S &P 500 falls, European stocks will probably fall less simply because there's less speculative price build-up to unwind. A port in the storm, as he puts it. Another manager Zouyke spoke to argues the ossified Europe stereotype is out of date. that big European companies are reforming and cutting costs faster than she's seen in her entire career. So, the case isn't that these are sad, dusty companies, it's that low investor expectations leave room for upside surprises, which is roughly the opposite of what you get when you buy the most exciting stock in the world at 40 times earnings.

34:35Now, I should be clear that Zweig is not predicting a crash in his column either. He goes out of his way to say the fears about US market concentration are probably overblown, that history doesn't show that a few giant stocks lead to bad returns, and that if you're already globally diversified, you might not need to do anything at all. His suggestion is simply to add a little European exposure at the margin, not to run for the hills, which fits the whole spirit of this video. The point was never to tell you that the sky is falling. It's that if you've somehow ended up with everything you own riding on a single trade, it's worth knowing that there are other rooms in the building.

35:20And that brings us back to the magic word from the start of the video, diversification. People often think diversification means owning 50 different technology stocks that all go up together.

35:37That isn't diversification, that's just piling in in a bull market. As Zweig puts it, if all of your assets go up at the same time, they are also likely to go down at the same time, which is the thing you were trying to avoid. Real diversification means deliberately owning things that don't all fall over on the same afternoon, which in practice means holding some assets you feel faintly embarrassed about. While your neighbor is at the barbecue talking about his SpaceX allocation and his Nvidia call options, you have to admit that a meaningful chunk of your net worth is riding on the dependable performance of a Swiss pharmaceutical company in a Scottish water utility.

36:20It's not a story that gets you invited back. But the boring assets are the ones still standing when the exciting ones aren't. And that's the real lesson here, because long-term investing isn't supposed to be exciting. When you look back through financial history, the most thrilling trade of any given era is very often the one that goes on to ruin the people who piled into it. In the early 1970s, the nifty 50 were the 50 blue-chip American stocks stocks that you could supposedly buy and hold forever, right up until they lost most of their value in the 1973-74 crash. By the end of the 1980s, the Japanese stock market was widely regarded as the unstoppable future of the global economy.

37:09Then it spent the next three decades going essentially nowhere. An investor who bought Japan at the peak in 1989 waited more than 30 years just to get back to break even. And as we've already discussed, the Nasdaq needed about 15 years to climb back to where it stood in the year 2000. None of these were stupid bets at the time. They were the consensus. They were the exciting, obvious, everybody-already-knows-it trade, which is precisely what made them so dangerous. So, this is where we land. You don't have to attend every party. you don't have to put your whole net worth into the hottest corner of the market because it's what everyone is talking about and someone on the internet told you it only goes up.

37:56The AI boom may well work out to be as good as advertised. A lot of serious people think it will and they might be right. But this technology is real and these stocks are a good investment at these prices are two completely different statements, and a good chunk of financial history is just people confusing the first one for the second. The point of investing for retirement isn't to have interesting things to say at dinner parties, it's to eventually retire. Thanks for tuning into this week's podcast. The podcast is entirely funded by listeners like you through small donations on Patreon. If you'd like to contribute, I'll leave a link in the show notes.

38:41Have a great week and talk to you again soon. Bye.

39:11Man in red will be impressed. Shop the holiday decor you want online only at HomeDepot.com. Mr. Monopoly here. Miss me? Monopoly is back at McDonald's with millions of prizes. A 2027 cheap charity. A Carnival Cruise vacation. Gift cards from DoorDash and Best Buy. He'll then play in the McDonald's app. Get your bag. No purchase necessary. 50 U.S. and D.C. age 18 plus. See play at mcd.com for rules and play at mcd.com slash AMOE for info and playing without purchase by mail by November 2nd. Chance card game ends November 8th. Game ends November 22nd, 2026. See rules for prize details. Monopoly is a registered trademark of Hasbro.

From the publisher

Two chip stocks recently drove seventeen percent of the entire global stock market's return in a single month — which tells you just how concentrated the AI trade has become, and how exposed the average investor now is without realising it. In this video we look at how much wealth an AI crash could actually destroy, with estimates from Dean Baker, former IMF chief economist Gita Gopinath, and Oliver Wyman running into the tens of trillions of dollars. We cover why the usual places to hide — small caps, value funds, international stocks — are now packed with AI stocks, what the Bank for International Settlements found when it compared today's buildout to the great railway and dot-com bubbles, and why a technology being real has never been enough to protect the people who overpaid for it. This isn't a crash prediction. It's a look at the downside risk, the illusion of diversification, and why boring, unexciting investing tends to win in the end.

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