Leon Cooperman says we've reached the stage of the bull market that Warren Buffett warned about
1. Leon Cooperman sees risks in the late innings of the bull market. 2. S&P 500 has surged nearly 40% since April, reaching all-time highs. 3. The Buffett Indicator shows record market exuberance compared to GDP. 4. High valuations in AI sectors are concerning, indicating irrational exuberance. 5. Cooperman prefers stocks over government bonds due to inflation risks.