During the dot-com bubble, investors who sold at the first sign of a wobble missed massive gains. Analysis shows that even after the crash, buy-and-hold investors were profitable, while those who sold early were not. The worst financial outcome is panic-selling at the bottom of a crash, which locks in losses.

Simply keeping pace with peers is not a valid measure of success. If peers are taking excessive risks in a bubble, matching their performance means you were equally foolish. True skill is outperforming in bad times while keeping pace in good times.

History shows that markets can remain irrational longer than investors can remain solvent. For instance, the Nasdaq was 40% higher at its post-crash low in 2002 than when media first called the dot-com market "nutty" in 1995. Selling too early, even with sound analysis, often means missing substantial gains.

The dot-com era was not fueled by pure naivete. Many investors and professionals were fully aware that valuations were disconnected from reality. The prevailing strategy was to participate in the mania with the belief that they could sell to a "greater fool" before the inevitable bubble popped.

During the dot-com bubble, Howard Marks used second-order thinking to stay rational. Instead of asking which tech stocks were innovative (a first-order question), he asked what would happen *after* everyone else piled in. This focus on embedded expectations, rather than simple quality, is key to avoiding overpriced, crowded trades.

The current market, with heavy concentration in a few names, is a bubble. However, it's not time to short it. The correct approach is to treat it as a momentum-driven game of 'hot potato,' not a fundamental investment environment. The key is to ride the wave while recognizing its speculative nature.

Traditional hedges like bonds are less effective in an inflationary environment, where they can crash alongside stocks. Safe havens like gold have shown extreme volatility. Historical analysis of the dot-com bubble suggests select baskets of stocks, such as those with high, reliable dividends or low volatility, offer a more reliable hedge.

During the dot-com era, savvy investors recognized they were in a bubble but termed it an "iron bubble," believing it would persist. Bailing out too early was a greater risk than riding it to the end, as it meant missing out on significant late-stage gains. This mindset is relevant for navigating today's AI boom.

This maxim from legendary value investor Jean-Marie Evillard encapsulates the discipline required during a bubble. It prioritizes capital preservation over asset gathering, accepting the painful short-term business risk of client redemptions in order to protect remaining investors from a devastating market crash.