If you look at Warren Buffett's Berkshire Hathaway, you can see a clear preference for one company: Apple (NASDAQ: AAPL). Berkshire's stake in the company is worth over $156 billion -- an incredible 47% of its investment portfolio. With Berkshire's $700 billion market cap, it's not unfair to say that over a fifth of the company is Apple.

While most investors would be uncomfortable with that concentration level, Berkshire clearly isn't. It added 20 million more shares (about a 2% increase in its stake) during the first quarter. So should you follow Buffett's example with Apple, or are there better investments out there? Let's take a look.

Apple's products have become a staple for the American consumer. Whether it's a MacBook, AirPods, or the ever-popular iPhone lineup, Apple has successfully launched and developed a product ecosystem few companies could ever dream of achieving.

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Source Fool.com