S&P 500 Snapshot: Erasing Yesterday's Gain By: TalkMarkets May 03, 2016 at 18:28 PM EDT Yesterday, the first market day of the proverbial "sell in May" strategy, saw a 0.78% gain, but the second day of May trading erased the gain with a 0.87% loss. Read More >> Related Stocks: Standard & Poors 500