Elevated P/E ratios (currently around 22 for the S&P 500) have historically been associated with low subsequent returns (around ±2% annually over the next decade).
Today’s market shows some bubble-like characteristics, including high valuations and concentrated gains from a few tech giants. However, it lacks the outright mania and irrational thinking seen in past bubbles.
Notably, the author does not hear investors claiming “there’s no price too high,” a hallmark of previous bubbles.
The author remains cautious but refrains from declaring a definitive bubble.