The New Year May Start With A Sell-Off

The stock market may start the New Year with a major sell-off, just like this year. What I would do if I was sitting on a bunch of profits , I would maybe sell some S&P futures right now to lock in these prices in case there is a rush to get out in January. (SPDR S&P 500 Index ETF (SPY), Nasdaq 100 Index ETF (QQQ), iShares Russell 2000 Index ETF (IWM), SPDR Dow Jones Industrial Average ETF (DIA))