Chapter 9.37 min read

Market Bubbles and Speculation: When Everyone Knows and Nobody Stops

Riya got as far as the order screen. This is the chapter about what stopped her, and about what didn't stop Raj twenty years ago.

9.3Market Bubbles and Speculation: When Everyone Knows and Nobody Stops

3.1The thing everyone was buying

It doesn't matter what it was. That's almost the point — Riya would say afterwards that the specific thing was the least interesting part, and that if you'd replaced it with something else entirely the eighteen months would have gone exactly the same way.

What mattered was the shape. A genuinely new idea, a real technology behind it, a handful of early companies that had gone up several hundred per cent, and then a second wave of companies that had gone up several hundred per cent for no reason other than being adjacent to the first.

By the time Riya's dentist mentioned it, unprompted, while she had instruments in her mouth, it had been rising for fourteen months.

3.2What a bubble is

A **bubble** is a price that has detached from any defensible estimate of underlying value and is being sustained by the expectation of further price rises. Not by earnings, not by assets, not by cash flows — by the confident belief that somebody will pay more tomorrow.

"That's a value trap in reverse," Riya said. "A value trap is cheap for a real reason. This is expensive for no reason at all."

"Better than that," Raj said. "A value trap is the market being right and you being wrong. A bubble is a very large number of people all being wrong together, which feels completely different from the inside, because everyone you check with agrees with you."

3.3The tulips, and why they're not a joke

The canonical example is **Dutch tulip mania in the 1630s**, when rare bulbs reportedly changed hands for sums comparable to a skilled craftsman's annual income. It gets told as a story about how silly people used to be.

"Which is the wrong lesson," Raj said. "Those weren't stupid people. They were merchants in the most sophisticated financial centre in the world at the time. They had better information than almost anyone alive. And the thing that made them buy wasn't a belief about flowers — it was that the price had gone up every month for two years and everyone they knew had made money."

The pattern recurs with the object swapped out — tulip bulbs, railway shares, radio stocks, dot-coms, various digital assets. The constant is not the asset. It is the **self-referential logic**: the price is rising, therefore buying is correct, therefore the price rises.

3.4"This time is different"

"People must notice, though," Riya said. "The pattern is famous."

"Everyone notices. That's what nobody believes until they've been in one." Raj said. "Every bubble comes with an intelligent, detailed, frequently *correct* explanation of why this particular case is genuinely different — a real new technology, a real structural change, real adoption. And here's the uncomfortable part: often that story is true. The internet did change everything. It just didn't make those companies at those prices a good purchase."

3.5Nikhil, all the way in

He wasn't gloating. Riya had expected gloating and it would have been easier.

"I'm not being reckless," he said, and he'd clearly thought about it. "I'm up about four times. I've made back the City Bakehouse money and the margin money and I'm ahead of where I'd have been if neither had happened. Your spreadsheet said I needed to stop going backwards. I've stopped. I've gone forwards."

"On paper."

"Everything's on paper until you sell. That's true of your bakery too."

It was, and she couldn't fault the sentence, and she noticed she was arguing with someone who had been right for fourteen consecutive months while she had been cautious.

3.6The order screen

She went as far as the order screen. She wants this recorded accurately, because she thinks the version where she was never tempted is useless to anybody.

The reasoning was excellent. A small position. Money she could lose. Not the core of the portfolio, just a sliver — and she had, after all, been wrong to stay out for fourteen months already, which was a cost she'd actually paid.

What stopped her was a question she now asks automatically, and it took about four seconds.

*If this goes to zero, what happens to me?*

The sliver was fine. That was the trouble — she knew, with total clarity, that she would not stop at the sliver. She would add on the next rise, and again, the way she had added to Aman's bakery every month for five years while telling herself each purchase was individually sensible. She had done this exact thing before. She knew what she was like.

She closed the screen. Not because she was certain it was a bubble — she wasn't, and she says she still isn't sure she'd have called it correctly at the time. Because she didn't trust her own future behaviour.

3.7What Raj finally said

She told him about the order screen, and he was quiet long enough that she checked the line was still connected.

"I want to tell you something I don't talk about," he said.

He had been thirty-one during the technology boom at the turn of the century. He had been good at his job, he had read the filings, and he had worked out by about the middle of it that a substantial number of the companies involved could not possibly earn what their prices implied. He'd written it down. He had the reasoning correct and early.

"And I stayed in," he said. "For another eleven months. Because I was up, and because getting out meant watching people I considered less capable than me carry on getting richer, and I could not stand it."

"You rode it down."

"I rode it all the way down. But that isn't the part." His voice changed slightly. "Two colleagues asked me what I thought, near the top. I knew what I thought. I said something reassuring, because saying the true thing out loud would have meant admitting what I was doing with my own money. One of them was buying his first house."

Riya didn't say anything.

"So when you ask why I'm cautious," Raj said. "It isn't temperament. I'm not a careful person. I'm a person who found out exactly what he does when everyone around him is getting rich, and I've organised my finances since then on the assumption that I'll do it again."

3.8Aman, for the third time

The investors came back with a better offer and Aman turned it down again.

"Same reason as the first time," he told Riya. "They still won't talk about the bread. Eleven years ago somebody sat in that chair and told me I could have twenty branches, and the people who took that deal aren't here anymore." He shrugged. "I'll do it slowly. I'd rather be smaller and still be here."

3.9What happened

It broke over about five weeks. There was no single trigger that anybody could point to afterwards, which is characteristic — enough buyers simply weren't there at the next price, and then the absence became the news.

Nikhil did not lose everything. He'd sold a portion near the top, not because he'd called it but because his sister had needed money for something unrelated, which is the sort of thing that decides these outcomes far more often than judgement does. He came out somewhat ahead of where he'd started and substantially below where he'd been.

He is not a cautionary tale and Riya gets irritated when people try to make him one. He was forty-three, he had been genuinely behind through no particular fault of his own, and he had done a rational-feeling thing about it. The arithmetic that would have helped him existed, and nobody gave it to him at twenty-eight, and by the time anybody did he had already been right for fourteen months.

3.10The uncomfortable part of the wreckage

What stayed with Riya afterwards wasn't the collapse. It was going back through the list of companies a year later.

Most were gone or worthless. But three or four were still there — smaller, quieter, and genuinely building the thing they'd said they'd build. One of them was, by then, obviously a real business.

"So some of them were right," she said. "The idea was real. Some of those companies were always going to work. I avoided the whole thing, and I was correct to, and I also avoided the ones that worked."

"Welcome to the actual question," Raj said. "Which is the oldest argument in investing and the only one I've never resolved: do you buy the cheap, boring, obviously-fine thing, or do you pay up for the thing that might be enormous? Because both of those have made people very rich, and both have ruined people, and I genuinely don't know which one you are."

3.11The real world translation

In the storyIn the real world
A price held up by expected further risesA speculative bubble
Sophisticated merchants paying a year's income for a bulbDutch tulip mania, 1630s
A true story about a real technologyWhy genuine innovation makes the most dangerous bubbles
"I'm up four times"Paper gains mistaken for validated judgement
Asking what a total loss would do to herPosition sizing as the actual defence
Raj staying in for eleven months knowing betterWhy knowledge does not confer immunity
Selling near the top for unrelated reasonsOutcomes determined by circumstance rather than skill

Key takeaways from this chapter

  1. 1.A bubble is a price sustained by the expectation of further price rises rather than by any defensible estimate of underlying value.
  2. 2.The pattern recurs across centuries with the asset swapped out; what stays constant is the self-referential logic that rising prices justify buying.
  3. 3.The most dangerous bubbles form around genuine innovations, because the story is true and only the price is indefensible — and those are compatible.
  4. 4.Knowing a market is overpriced provides very little protection: social pressure and the pain of watching others profit defeat correct analysis routinely.
  5. 5.The practical defence is position sizing and honesty about your own future behaviour, not confidence in your ability to identify the top.
  6. 6.Bubbles usually burst without a single identifiable trigger, and some companies inside them turn out to be real — which is a genuinely hard problem, not a tidy moral.

Facts in this chapter last reviewed 2026-09-18.

Educational explanation using a fictional example (Aman, Riya and Raj are not real people; their bakery is not a real company). EquityTale is not registered with SEBI as an investment adviser or research analyst, and nothing here is investment advice, a recommendation, or a price target. See the full disclaimer.