U.S. stocks drifted to a mixed finish Wednesday after the latest inflation update boosted hopes that more help for the economy will arrive next month through a cut to interest rates. The S&P 500 was nearly unchanged and edged up by less than 0.

Collectively, Berkshire's record cash position and record stock sales are a historic warning for Wall Street. Buffett and his fellow investment managers are clearly struggling to find reasonably priced stocks. But individual investors should not misinterpret that warning as a reason to avoid the stock market. Here's why.