There are a lot of lessons investors can learn from the Oracle of Omaha, Warren Buffett. His company Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) has been one of the best and most consistently performing stocks over the past 50 years, making money through insurance, railroads, and stock investing.

When you look at Berkshire's portfolio, there's one company that looks like a clear favorite over any other it owns: Apple (NASDAQ: AAPL). Apple currently makes up an incredible 47% of Berkshire's portfolio, while the next largest component only sits at 8%.

With that said, is Apple a stock you should consider buying right now? Let's find out.

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Source Fool.com