Buy Low, Sell High: The One Mistake Successful Investors Avoid
The key to successful investing lies in avoiding overvalued stocks, according to The Motley Fool. Despite the simple directive to 'buy low, sell high', many investors fall prey to hyped-up stocks and expect them to keep rising.
Experienced investors know that massive price increases are unsustainable and can leave buyers holding the bag. Warren Buffett's value investing approach involves finding undervalued stocks with strong fundamentals, which often requires being 'fearful when others are greedy'.
The article cites Berkshire Hathaway's purchase of UnitedHealth Group stock in 2025 as an example of a savvy investment decision. The company's management had cut its profit outlook, causing the stock price to plummet, but Buffett and his team saw this as a buying opportunity.
Berkshire Hathaway bought the stake in the second quarter of 2025 and sold it in the first quarter of 2026, gaining 24% from its drop. The article also notes that top stocks can continue delivering value even when they have high price tags, citing Berkshire Hathaway's investment in Amazon.