RE:RE:Is a market correction under way? "Since 1949 there have been nine periods of 20%-or-greater declines in the S&P 500. And while the average 33% decline of these cycles can be painful to endure, missing out on part of the average bull market’s 263% return could be even worse.
Bear markets have averaged 14 months, a relatively short time compared with the 71 months of the average bull market — another reason why trying to time investment decisions can be difficult and is usually ill-advised.
Equity returns are often strongest after a decline when investors believe that the market has overreacted to the downturn. The average 12-month return immediately following a 15% or greater decline is 55%. That’s why it often can pay to remain calm and stay the course."
10% drop from recent high happens about once per year and the average length in days is 117
5% drop happens about 3 times per year and average length of 46 days
15% drop happens about once every 3.5 years and average length of 275 days
20% drop happens about once every 6.3 years and average length of 425 days. This usually coincides with a recession.
https://www.capitalgroup.com/advisor/ca/en/insights/content/articles/6-charts-that-explain-market-declines.html