If you want to know what Berkshire Hathaway CEO Warren Buffett's favorite stock is, you don't have to look hard to find the answer. The investment conglomerate publishes filings after each quarter that break down its equity holdings, and its portfolio weighting allocations make it clear that one company stands above the rest. 

Accounting for a staggering 47.5% of Berkshire's equity holdings, Apple (NASDAQ: AAPL) stock has received a stunning vote of confidence from the Oracle of Omaha. It's not hard to see why the famous investor is so enamored with the tech giant. Thanks to its incredibly successful smartphone business, other successful hardware, and high-margin software-and-services business, Apple frequently ranks as the world's most profitable company, and it has seen incredible stock performance over the last decade.

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Source Fool.com