Berkshire Hathaway's latest report showed $370 billion in cash equivalents held in U.S. Treasuries. Steve Burns asked Grok why Warren Buffett is holding that cash, and Grok said Buffett often builds cash when stocks look extremely overvalued. Grok also said Buffett had a similar cash buildup in the mid-2000s and waited about 2–3 years before deals with Goldman Sachs and GE during the 2008 panic.