Lee pointed out that the S&P 500 itself has still had a very good year, up roughly 15% to 17%, and is on track for a third consecutive year of double-digit gains. That is rare. This has been one of the longest bull runs we have seen since the mid-1990s, rivaling the recovery periods after the dot-com bust and the financial crisis.I said plainly that when leading stocks start to run out of gas, that is often how market tops are formed. You do not need the entire market to collapse. You just need fewer stocks ...