Does he hold any Nvidia?

Warren Buffett does not personally own any shares of Nvidia (NVDA), but his investment firm, Berkshire Hathaway, holds positions in two S&P 500 index ETFs that indirectly benefit from Nvidia's stock price gains:

1. SPDR S&P 500 ETF Trust (SPY): Berkshire owns 39,400 shares of this ETF, which is the largest ETF in the world by assets under management. Nvidia's inclusion in the S&P 500 index means that SPY holders, like Berkshire, indirectly benefit from Nvidia's stock price appreciation.
2. Vanguard S&P 500 ETF (VOO): Berkshire also holds 43,000 shares of this ETF, which is the third-largest ETF by assets under management. Similar to SPY, VOO's performance is influenced by Nvidia's stock price movements.

Although Berkshire's holdings in these ETFs are relatively small compared to the total portfolio, they do provide some exposure to Nvidia's performance. However, it's important to note that Berkshire's cash pile has been increasing, indicating a more cautious approach to investing.

In summary, Warren Buffett does not directly own Nvidia shares, but his investment firm, Berkshire Hathaway, holds positions in S&P 500 index ETFs that benefit from Nvidia's stock price appreciation. Additionally, Berkshire's recent focus on increasing its cash reserves suggests a more conservative investment strategy.