Do companies like Berkshire with large piles of cash convert any of that into large holdings of metal reserves like gold, etc? Apple also holds a lot - https:/

Do companies like Berkshire with large piles of cash convert any of that into large holdings of metal reserves like gold, etc? Apple also holds a lot - https://www.investors.com/etfs-and-funds/sectors/sp500-companies-stockpile-1-trillion-cash-investors-want-it/ https://www.investors.com/etfs-and-funds/sectors/sp500-compa... Is there a reason they may hold it in cash instead of gold, in some unique event where time is money, and there isn't the time to convert the gold to capital before they may want to execute on certain event types? Anyone have book recommendations for what kind of moves are possible, why such large cash reserves are held by companies?