Warren Buffett bought another $17 billion worth of U.S. Treasury bonds this week.

Apple has already fallen more than 14%, and he says that's not enough to be attractive. He admits he sold too early, but he still wouldn't make a big buy now.
In his view, the current market volatility is not even considered a "warm-up."
Historically, real panic would require a 50% or greater plunge to qualify.
Having led Berkshire Hathaway for 60 years, he has only seen three major bottoms where Berkshire's stock price halved or more. Those three times were when he truly made big money.
What he's waiting for now is the fourth time the S&P 500 drops significantly.