If identifying a bubble were easy, then we all could do it. And, if we all could do it, then a bubble wouldn’t form in the first place. It’s easy to misinterpret overpricing for part of the market as an indication that everything is a bubble. Owen Lamont, a portfolio manager at Acadian Asset Management in Boston, has written extensively about market extremes. One definition of a bubble, he jokes, is “when I think the stock market is overpriced and then it doubles,” as in 1999. (That year, the Nasdaq 100 index gained 102%, after returning 85% in 1998.) The last of what Lamont calls “the four horsemen” of a bubble is a tidal wave of stock issuance. https://www.acadian-asset.com/investment-insights/owenomics/no-we-are-not-in-a-bubble-yet The real danger of bubblespotting is believing you can do it. Jason Zweig Wall Street Journal May 8, 2026 https://www.wsj.com/finance/stocks/why-its-so-hard-to-spot-a-stock-market-bubble-63f40a1c Wall Street is gearing up for a sales push that could ...