1929

arvy's Teaser: September 1929. The Dow has tripled in five years. Newspapers write about a "new era." Shoeshine boys trade stocks on margin. Everyone knows it can only go up. Three weeks later, the market loses a third of its value — and the world economy enters the worst depression in history. Andrew Ross Sorkin's "1929" reconstructs this collapse with cinematic precision. But this isn't a history lesson. It's a warning manual for right now.

Idea 1: Every Bubble Has the Same Soundtrack — "This Time Is Different"

Sorkin's most powerful contribution isn't new data. It's showing how rational people talked themselves into irrational positions — and how that language is eerily familiar.

In 1929, the argument was: new technologies (radio, automobiles, electrification) had permanently changed the economy. Old valuation rules no longer applied. Stocks could only go up because America had entered a "new era" of perpetual growth.

Sound familiar?

Sorkin's point isn't that 2026 will be 1929. It's that the psychological mechanics are identical — and that ignoring them is exactly how crashes happen.

Idea 2: Leverage Is the Accelerant — It Turns Corrections into Catastrophes

The 1929 crash didn't happen because stocks were overvalued. It happened because the overvaluation was built on borrowed money.

In 1929, margin lending had exploded. Ordinary investors could buy stocks with just 10% down — the broker lent the rest. When prices dropped, margin calls forced selling. Forced selling caused more drops. More drops triggered more margin calls. The spiral was mechanical and unstoppable.

Sorkin shows that the crash itself — a 48% decline from peak to November 1929 — wasn't the real disaster. The real disaster was the leverage-driven chain reaction that turned a market correction into a banking crisis, which turned into a credit freeze, which turned into the Great Depression. It wasn't the fall that killed. It was the debt that broke every bone on the way down.

Idea 3: Regulation Always Arrives After the Crash

One of Sorkin's most sobering observations: the institutions we now take for granted — the SEC, deposit insurance, margin requirements — didn't exist before 1929. They were created because of 1929.

Before the crash, there was no Securities and Exchange Commission. No requirement to disclose financial statements. No limits on insider trading. No deposit insurance for bank customers. The financial system operated on trust — and when trust evaporated, there was nothing underneath.

The SEC was created in 1934. The Glass-Steagall Act separated commercial and investment banking. Margin requirements were introduced. Every major financial regulation in the 20th century was a reaction to a crisis — never a prevention.

What This Means for Swiss Investors

Switzerland wasn't immune in 1929 — and it won't be in the next crisis. But there are structural advantages worth understanding:

Swiss banks and regulation. Switzerland's financial regulation (FINMA) is among the strictest in the world. The lessons of 1929 — and 2008 — have been absorbed more deeply here than in most countries. But regulation only protects against known risks. The next crisis will come from somewhere unexpected.

The leverage question. Swiss investors tend to use less leverage than their American counterparts. No Lombard-loan-fuelled stock speculation at scale. Pillar 3a is structurally long-term. Savings plans are inherently disciplined. These are behavioural advantages that Sorkin's book shows are worth more than any trading strategy.

Quality as crash insurance. In 1929, companies with real earnings, low debt, and essential products survived. Companies built on speculation and leverage didn't. That's the same principle that guides arvy: invest in 25–35 companies with proven cash flows, low leverage, and durable competitive advantages. Not because crashes won't happen — but because quality companies survive them.

arvy's Take

What holds up: Sorkin's reconstruction is cinematic and deeply researched. The human stories — the bankers, the politicians, the ordinary people who lost everything — make the mechanics of a crash visceral, not abstract. This is the best book we've read about why crashes happen, not just how.

What's missing: The book focuses entirely on the US. The global dimension — how the crash spread to Europe, how it affected Swiss banks and exports — is underexplored. For that, pair it with Liaquat Ahamed's "Lords of Finance."

What we'd add: The most important lesson of 1929 isn't "don't invest." It's "don't speculate with borrowed money on assets you don't understand." Disciplined, long-term investing in quality companies — without leverage, with patience, through the cycle — has survived every crash in history. Including 1929.