There have now been 12 days during this bull market where the S&P 500 declined by 2% or more. In the table below, we highlight that the average next day change is +62 bps, but the average absolute change of 125 bps indicates that tomorrow could be another volatile day.
We also looked at the 20 best and worst performing stocks in the S&P 500 on 2/27 to see how they performed the following day. As shown, the 20 stocks that went down the most that day were up an average of 1.29% the next day versus an overall average of 0.44% for all S&P 500 stocks. The stocks that held up the best on 2/27 were actually down an average of 25 bps on the following day, even when the index was up 56 bps. So if you're looking for ideas tomorrow, the worst performers on 2/27 (a similar decline to today's yet more dramatic) outperformed the next day while the best performers underperformed. For your convenience we have also listed the worst and best performers in the S&P 500 today.