Bloom Energy Joined the S&P 500 at Nearly 400 Times Earnings. History Says This Is What Happens Next

21, Bloom Energy (NYSE: BE) joined the S&P 500 . The announcement that the industrial company would be added to the index was made on Sept. 4, and its share price rose about 8% in the lead-up to its inclusion. Bloom Energy stock was extremely expensive, trading at nearly 400 times trailing earnings, when it joined the S&P 500.