Why Warren Buffett Keeps Betting on Low-Cost Index Funds

If there's one investing lesson Warren Buffett has hammered home for decades, it's surprisingly simple: buy a low-cost index fund and hold on. The Oracle of Omaha hasn't kept this advice to himself, either—he's shared it with everyone from billionaire peers to everyday retail investors, and the track record behind it is hard to argue with.

Index funds, for the uninitiated, are investment vehicles that track a broad market benchmark like the S&P 500 rather than trying to pick individual winning stocks. Because they're passively managed, their fees are dramatically lower than those of actively managed mutual funds. That cost difference, compounded over years or decades, can translate into a meaningful gap in your final portfolio value—one that works squarely in your favor.

Read more Florida Man Pays Off Home, Then Hurricane Milton Destroys It →

Buffett's confidence in this approach isn't just theoretical. He has famously stated that upon his death, he wants the cash left to his wife invested almost entirely in a low-cost S&P 500 index fund. That's a pretty strong endorsement when you consider the man has spent his career outperforming the market himself—he's essentially admitting that most people, and most professional fund managers, won't do the same.

History repeatedly backs him up. Studies over long time horizons consistently show that the vast majority of actively managed funds fail to beat their benchmark index after fees are accounted for. The investors who chase hot fund managers or pay premium fees for "expert" stock selection typically end up with less money, not more. Buffett's low-cost index fund recommendation cuts through all of that noise with a straightforward, time-tested alternative.

For everyday investors, the takeaway is both humbling and liberating—you don't need to be the next Buffett to build meaningful wealth. You just need consistency, patience, and a fund with rock-bottom expenses. Continue reading at Yahoo Finance.