Buffett has long been a fan of Bank of America, singing the praises of CEO Brian Moynihan time and again, and he's owned the stock since he bought preferred shares of BofA in 2011.

Warren Buffett has owned a lot of stocks during his career, but there's been one position that's consistently outperformed.

Warren Buffett's Berkshire Hathaway (NYSE:BRK.B) has shed more Bank of America (NYSE:BAC) stock, selling shares worth about $900M and bring its stake in the lender down to 10.8%. Berkshire (BRK.B) sold 22.

Buffett learned from Benjamin Graham, the "father of value investing." He remains a value investor at heart despite straying from Graham's philosophy somewhat over time. Buffett would never buy a stock if he didn't think its valuation was attractive. He undoubtedly thinks the price is right with Sirius XM.

If Berkshire drops its stake under 10%, it will no longer have to file with the SEC for any changes in its Bank of America holding within two business days. Berkshire would have t