“The problem with “going to cash” in a crash is that you lock in your losses. Maybe your plan is to jump right back in after the market bottoms? Good luck with that. When markets do turn back up, they do so quickly. As financial planner Kristin McKenna explains here, six of the 10 best daily gains in the S&P 500 between January 2000 and December 2019 occurred within two weeks of the worst 10 days. Had you missed all of those 10 best days, your average annualized total return on the S&P 500 for those two decades would have been 2.44% compared to 6.06% had you stayed fully invested and ridden the roller coaster down and back up.”
https://www.forbes.com/sites/janetnovack/2020/03/16/8-ways-coronavirus-will-drastically-alter-boomer-retirements/amp/
Source: Financial Planning for Women