The lesson is we have to prepare and I did pretty well this time. The market has been risky for several months (close to two technical indicators I followed). I started to accumulate cash. Before the fierce correction I had about 50% cash.
Guessing oil hitting the bottom, I bought
OIL 2 times several days ago and it is up over 20%. Two days ago, RSI
told me the market was far oversold, I bought 4 value stocks (AAPL, GILD, GM and GNW) and they
ranged from 2% to 10% return in 2 days. Sold one as I believe the market
is still risky.
It may not work all the time, but following
technical indicators work most of the time as many investors do. Too
nimble on them would give us too many false signals though. It is all
described in my book The Art of Investing. I'm more conservative so I
seldom go all the way (except all in in March, 2009).
One commenter at Seeking Alpha did not believe me. The following two posts are my proofs.