Warren Buffett's Berkshire Hathaway has reached a record cash pile of $325.2 billion, representing 28% of its total assets, surpassing levels seen before the Great Financial Crisis in 2005. This marks the eighth consecutive quarter of net selling, with $34.6 billion worth of stock sold in Q3 alone. Buffett has not repurchased any shares for the first time since 2018, indicating a cautious stance in the current market environment. Despite this, hedge funds have recently shifted their strategy, emerging as significant buyers of U.S. stocks after five weeks of selling. This change in sentiment follows stronger-than-expected earnings reports, leading to a notable increase in net buying of U.S. equities, particularly in the technology sector. Additionally, professional investors' cash levels are at a near all-time low, suggesting a potential sell signal for stocks, while exposure to U.S. stocks has reached a record 54%, surpassing the peak during the Dot-Com Bubble.