<div id="readability-page-1">For the better part of 60 years, Berkshire Hathaway's (BRK.A -0.13%) (BRK.B -0.06%) billionaire CEO Warren Buffett has been outpacing the benchmark S&amp;P 500 (^GSPC 1.52%) with ease. Whereas the stock market's broad-based index has gained close to 42,500%, including dividends, over the last six decades, the aptly nicknamed Oracle of Omaha has overseen a cumulative return in excess of 5,900,000% for his company's Class A shares (BRK.A). Berkshire's stock lapping the S&amp;P 500 nearly 140 times has encouraged some investors to ride Warren Buffett's coattails to substantial long-term gains. Yet one of the odd quirks about Berkshire's billionaire boss is that he's not always a buyer. Though Buffett's acquisitions and investments are responsible for transforming Berkshire Hathaway into a trillion-dollar business, he's been a persistent net seller of stocks for 11 consecutive quarters. But while Buffett is sending an unmistakable yet silent warning to Wall Street, he has found one historically cheap industry leader -- up well over 32,000% since its initial public offering (IPO) -- worth piling into. <div><img src="https://imageproxy.pbkrs.com/https://g.foolcdn.com/image//query-b3A9cmVzaXplJnVybD1odHRwczovL2cuZm9vbGNkbi5jb20vZWRpdG9yaWFsL2ltYWdlcy84MzA1ODYvYnVmZmV0dDEzLXRtZi5qcGcmdz03MDA?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="700" height="466" original-src="https://imageproxy.pbkrs.com/https://g.foolcdn.com/image//query-b3A9cmVzaXplJnVybD1odHRwczovL2cuZm9vbGNkbi5jb20vZWRpdG9yaWFsL2ltYWdlcy84MzA1ODYvYnVmZmV0dDEzLXRtZi5qcGcmdz03MDA"/>Berkshire Hathaway CEO Warren Buffett. Image source: The Motley Fool. </div> <h2>Warren Buffett's $177 billion warning may be silent, but it's unmistakable</h2> Regardless of what Berkshire Hathaway's Form 13F filing might show on a quarter-to-quarter basis, the Oracle of Omaha is, at his core, an unwavering optimist on America and the stock market over the long run. He's repeatedly opined during annual meetings and in shareholder letters that investors shouldn't bet against America. However, Warren Buffett is also unwavering when it comes to his desire to get a good deal. While he appreciates strong management teams, hearty capital-return programs, and sustainable moats, nothing holds more importance in the investment column than the perception of value. At the moment, value is incredibly hard to come by. Although &#34;value&#34; is in the eye of the beholder and therefore subjective, a couple of backward-facing valuation metrics leave little room for argument that the stock market is historically pricey. For instance, the S&amp;P 500's Shiller price-to-earnings (P/E) ratio, which is also known as the cyclically adjusted P/E ratio (CAPE ratio), recently hit its third-priciest multiple when back-tested 154 years. Whereas the average Shiller P/E reading is a little over 17, dating back to January 1871, this valuation tool hit a reading of almost 39 in late July. <img src="https://imageproxy.pbkrs.com/https://media.ycharts.com/charts/ed297643360edc324fba4b84580009d7.png?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="720" height="441" original-src="https://imageproxy.pbkrs.com/https://media.ycharts.com/charts/ed297643360edc324fba4b84580009d7.png"/> S&amp;P 500 Shiller CAPE Ratio data by YCharts. It's a somewhat similar story for the metric that Warren Buffett referred to as &#34;probably the best single measure of where valuations stand at any given moment&#34; in an interview with Fortune magazine in 2001. The market cap-to-GDP ratio, which is now affably known as the &#34;Buffett Indicator,&#34; topped 210% recently. In comparison, the cumulative value of all public stocks divided by U.S. gross domestic product (GDP) has averaged closer to 85% when back-tested to 1970. The stock market is historically pricey, and Warren Buffett's persistent selling activity at Berkshire Hathaway demonstrates this. Spanning 11 quarters (Oct. 1, 2022 to June 30, 2025), Berkshire's billionaire chief sold $177.4 billion more in stock than was purchased. Even Berkshire Hathaway's own stock isn't impervious to Buffett's staunch, value-investing ideals. Following a stretch of 24 consecutive quarters of share buybacks, Buffett has now gone a full year without spending a dime to repurchase his own company's stock. The culprit? Berkshire's stock has been pretty consistently hovering at a 60% to 80% premium-to-book value, which is too rich a price to pay for share repurchases. But in spite of this silent warning, Berkshire's 13F showed that its CEO did find at least one screaming bargain during the June-ended quarter. <div><img src="https://imageproxy.pbkrs.com/https://g.foolcdn.com/image//query-b3A9cmVzaXplJnVybD1odHRwczovL2cuZm9vbGNkbi5jb20vZWRpdG9yaWFsL2ltYWdlcy84MzA1ODYvcGh5c2ljaWFuLWRvY3Rvci1hZG1pbmlzdGVyLXZhY2NpbmUtZmx1LXBhdGllbnQtY292aWQxOS1nZXR0eS5qcGcmdz03MDA?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="700" height="466" original-src="https://imageproxy.pbkrs.com/https://g.foolcdn.com/image//query-b3A9cmVzaXplJnVybD1odHRwczovL2cuZm9vbGNkbi5jb20vZWRpdG9yaWFsL2ltYWdlcy84MzA1ODYvcGh5c2ljaWFuLWRvY3Rvci1hZG1pbmlzdGVyLXZhY2NpbmUtZmx1LXBhdGllbnQtY292aWQxOS1nZXR0eS5qcGcmdz03MDA"/>Image source: Getty Images. </div> <h2>The Oracle of Omaha is pouncing on this price dislocation</h2> Throughout his years as Berkshire Hathaway's lead investor, Warren Buffett has demonstrated a willingness to wait for price dislocations to become apparent. A more-than-halving in health insurance and healthcare services stock UnitedHealth Group (UNH 1.24%) in the span of two months provided just the emotion-driven price dislocation he was waiting for. During the second quarter, Buffett oversaw the purchase of 5,039,564 shares of UnitedHealth stock, which at the midpoint of the year was worth about $1.57 billion. UnitedHealth's falls from grace is due to a variety of factors, including (in no particular order): <ul> <li>Higher-than-anticipated Medicare Advantage expenses and patient utilization rates. In simpler terms, its members accessed preventative care services more frequently, leading to higher medical expenses.</li> <li>The confirmation of a probe by the U.S. Justice Department into the company's Medicare billing practices.</li> <li>The unexpected resignation of now-former CEO Andrew Witty in mid-May.</li> <li>UnitedHealth Group pulling and subsequently slashing its full-year earnings per share (EPS)</li> </ul> While these are tangible, near-term concerns for the company, UnitedHealth Group stock didn't rocket higher by more than 32,000%, including dividends, since its IPO in 1984 by accident. It's pretty consistently delivered for investors thanks to well-defined competitive edges and a keen eye on costs. Though Buffett often sticks to the financial sector, he's a big fan of insurance companies. The premise for insurers is the same, whether they're insuring property or the health of individuals. Their goal is to bring in more in premium than will be outlaid in claims. The inevitability of claims is what allows insurers to possess strong premium pricing power more often than not. UnitedHealth Group will aggressively address higher utilization rates and increased medical costs by reducing the number of unprofitable Medicare Advantage members it covers and/or raising premiums, where applicable. While righting the ship doesn't happen at the drop of a dime, UnitedHealth has successfully navigated similar challenges before. Furthermore, subsidiary Optum has played a critical role in UnitedHealth's growth. This is the segment that provides care delivery, pharmacy care services, and even the software that hospitals use. Optum has consistently generated higher margins than the insurance operations and is the company's quickest ticket to a turnaround. If UnitedHealth Group were to simply meet Wall Street's tempered consensus EPS projection for 2026, it could be purchased, as of this writing on Aug. 21, for a forward-year profit multiple of 16. This works out to a 16% discount to its average forward-year P/E ratio over the trailing-five-year period. When coupled with UnitedHealth's growing dividend, it checks all the right boxes as a shareholder-friendly, time-tested company that's experienced a (likely) temporary price dislocation. </div>

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Warren Buffett, CEO of Berkshire Hathaway, has been a net seller of stocks for 11 consecutive quarters, selling $177.4 billion more than purchased. Despite this, he recently invested in UnitedHealth Group, which has seen a price drop of over 50%. Buffett's actions reflect a cautious stance on the historically high valuations of the stock market, as indicated by metrics like the Shiller P/E ratio and the Buffett Indicator. His investment in UnitedHealth, worth about $1.57 billion, comes amid challenges the company faces, including rising expenses and a Justice Department probe.

- Warren Buffett has significantly outperformed the S&P 500 over the past 60 years, achieving a cumulative return exceeding 5,900,000% for Berkshire Hathaway's Class A shares.  
- Despite his historical success, Buffett has been a net seller of stocks for 11 consecutive quarters, indicating concerns about the stock market's high valuations, as reflected in metrics like the Shiller P/E ratio and the Buffett Indicator.  
- Recently, he capitalized on a price dislocation by purchasing over 5 million shares of UnitedHealth Group, which has faced challenges but has a strong track record and competitive advantages.

Motley Fool

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In Spite of Warren Buffett's $177 Billion Silent Warning to Wall Street, Berkshire's Boss Piled Into This Historically Cheap Stock That's Gained Over 32,000% Since Its IPO