Mueller Industries, Inc. (NYSE:MLI) appears on the Mario Gabelli Stock Portfolio: 10 Best Stock Picks.
Mueller Industries, Inc. (NYSE:MLI) has consistently appeared in GAMCO Investors’ 13F portfolio since the third quarter of 2012. At the time, this position comprised 644,000 shares. The fund steadily increased this stake in the following quarters, reaching 8.7 million shares in the second quarter of 2018. Thereafter, it began to reduce this stake. Filings for the fourth quarter of 2025 show the fund owned nearly 1.9 million shares of the company, down nearly 15% from the prior quarter’s filings.
Hedge funds are attracted to Mueller Industries, Inc. (NYSE:MLI) due to its high-quality financial metrics, its status as a critical supplier to the hot data center market, and significant shareholder value initiatives. As of early 2026, MLI boasts a return on equity of 25%, which is more than double the industry average of 11%. For every dollar of shareholders’ equity, the company generates $0.25 in profit. While Mueller is a veteran industrial company that manufactures copper and brass components, it is currently benefiting from modern technological trends. Mueller’s plumbing and HVACR (heating, ventilation, air conditioning and refrigeration) products are essential for the cooling systems needed in massive AI data centers. In mid-February 2026, Mueller announced a 40% increase in its quarterly dividend, to $0.35 per share.
While we recognize the potential of MLI as an investment, we believe certain AI stocks offer greater growth potential and carry less downside risk. If you’re looking for an extremely undervalued AI stock that’s also benefiting significantly from Trump-era tariffs and the offshoring trend, check out our free report on best short-term AI stock.
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