Does Warren Buffett do derivatives?

Could you clarify for me if Warren Buffett, the renowned investor and CEO of Berkshire Hathaway, is known to engage in derivatives trading? I'm curious about his stance on this complex financial instrument, as his opinions often carry significant weight in the financial world. It would be interesting to know if he sees derivatives as a viable investment strategy or if he prefers to avoid them altogether. Your insights on this matter would be greatly appreciated.