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Mark Cuban calls diversification "for idiots," while Warren Buffett advocates concentrating on a few holdings you know well. Buffett kept his portfolio to eight or ten stocks, but as Berkshire Hathaway grew massive, he had to diversify more.

Mark Cuban calls diversification "for idiots," while Warren Buffett advocates concentrating on a few holdings you know well. Buffett kept his portfolio to eight or ten stocks, but as Berkshire Hathaway grew massive, he had to diversify more.
Mark Cuban, the billionaire, has said diversification is for idiots. And Warren Buffett has said instead of having multiple baskets, right, you should diversify into different baskets. You should have one basket and just watch it like a hawk. And when you think about Warren Buffett, like back in the day, most people don't know this, but they only focused on having like 8 to 10 investments at any given time. Now Berkshire Hathaway is a lot bigger. They have to diversify even more and they have so much money to deploy, right?