Berkshire Hathaway still holds nearly 21% of Apple’s stock portfolio and finished the third quarter with over $320 billion in Treasury bills. The company is sitting on a record-breaking cash pile. Warren Buffett is set to retire at the end of the year after leading Berkshire Hathaway for over six decades.

Berkshire Hathaway trimmed its stake in Apple by around 15% in the third quarter, selling more shares than buying. The company is looking to take profits from its Apple stake while corporate tax rates are favorable and as Apple’s stock becomes expensive compared to its expected earnings growth.

Berkshire Hathaway has been investing heavily in U.S. Treasury bills, holding around $305 billion at the end of the third quarter. With limited investment opportunities, T-bills provide guaranteed income without risks. The company has plenty of liquidity and can access its cash quickly if needed for opportunities.

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Read more at Nasdaq: Why Warren Buffett Just Sold 15% of His Apple Stake and Is Putting Money Here Instead