What’s more, the S&P 500 got whipped around even more than bitcoin (BTC) – you know, the famously volatile Magic Internet Money. The Fed press release came out at 2 p.m. ET. The S&P 500’s gain peaked at 0.7% about a half hour later, but it ended the day down 2.3%. Meanwhile, bitcoin peaked at a post-Fed press release gain of 1.3% and ended with a 1.5% loss.