The 1920s bubble was uniquely driven by the new concept of retail leverage. Financial institutions transported the nascent idea of buying cars on credit to the stock market, allowing individuals to buy stocks with as little as 10% down, creating unprecedented and fragile speculation.
Author Andrew Ross Sorkin wrote about 1929 because previous accounts lacked human detail. He sought to understand the characters' motivations, relationships, and incentives ("Who was sleeping with who?") to provide a richer picture of the crisis beyond purely economic data.
Instead of raising interest rates, the Fed in 1929 relied on "moral suasion"—sending letters asking banks to stop lending to speculators. This vague, unenforceable policy was largely ignored by bankers who questioned the definition of a 'speculator,' proving ineffective at cooling the market.
According to Andrew Ross Sorkin, while bad actors and speculation are always present, the single element that transforms a market downturn into a systemic financial crisis is excessive leverage. Without it, the system can absorb shocks; with it, a domino effect is inevitable, making guardrails against leverage paramount.
The speculative mania of the 1920s centered on transformative technology. RCA, holding patents for radio and television, became the era's quintessential meme stock, mirroring modern investor excitement for AI companies like NVIDIA. This shows how new technology narratives consistently fuel market bubbles.
The trauma of the 1929 crash created a lasting aversion to stock market investing. Andrew Ross Sorkin notes his grandfather witnessed the crash as a boy and never bought a stock in his life. This shows how crises can shatter a nation's financial psyche for generations, impacting wealth creation.
In 1929, the stock exchange ticker fell hours behind real-time trading. This information vacuum created immense uncertainty, forcing investors to physically crowd Wall Street for updates. This chaos, driven by a lack of data, contrasts sharply with today's high-speed, social-media-fueled market reactions.