Berkshire Hathaway ( BRK.A 0.02%) ( BRK.B 0.09%) has minted many millionaires during the past six decades. If you had invested $10,000 in Berkshire on May 10, 1965 -- the day Warren Buffett's investment fund took full control of the struggling textile maker -- your investment would be worth a whopping $381.9 million today.

Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) has been one of the most successful stock investments of all time. Plus, many people reading this aren't old even enough to have bought Berkshire stock in the 1960s.

The CEO slashed Berkshire’s Apple stake by two-thirds—and left some $30 billion on the table while incurring a big tax bill.

Despite Buffett overseeing stakes in nearly four-dozen securities, the lion's share of Berkshire's invested assets have been put to work in seven top ideas.