Do rising earnings undercut the bubble explanation for stock market gains?
Core argument: Excluding Amazon.com and Alphabet, whose results were inflated by investment gains, S&P 500 earnings rose 32% in the second quarter so far, with earnings outpacing stock prices over the past year.
There are several potential explanations for why the stock market has disconnected from GDP. One is that it’s a bubble. Another is that it tells us something about the future, namely that growth is going to accelerate. In a bubble, stock prices typically go up faster than earnings, inflating valuations. But in the last year, earnings have risen faster than prices. Exclude Amazon.com and Alphabet, whose results were inflated by investment gains, and earnings were up a stunning 32% in the second quarter so far. The boom isn’t just a tech or AI story. The median earnings growth of S&P 500 companies has accelerated to 13% from 8% two years ago, according to Bank of America. The bank calculates that total revenue for the index excluding energy and financial companies, and adjusted for inflation and currency changes, is up around 8%, much more than GDP.



