Mario Gabelli, the chief GAMCO Investors, remains one of the most consistent voices in value investing. In recent years, his focus has sharpened on the re-industrialization of America and the unlocking of value in legacy media and sports franchises. Gabelli’s primary methodology continues to guide his firm’s $10 billion 13F portfolio, which currently favors industrial infrastructure, aerospace, and unique trophy assets. In a recent appearance on news platform CNBC, Gabelli discussed the “re-industrialization of America,” the consolidation of the media landscape, and his outlook for the US economy. Gabelli opened by discussing the “confidence factor” among US business leaders. He argued that the current economic environment was more certain than many skeptics believed. He stated that business sentiment was “materially different” today compared to late 2025 and CEOs were now more willing to commit to long-term capital expenditures because they had clearer visibility into policy and interest rate trajectories.
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He balanced his optimism with a warning about the federal deficit, noting that the “math” of the government spending seven trillion while only collecting five trillion is a long-term risk that must be addressed through growth. Gabelli also discussed the bidding war for Warner Bros. Discovery assets between Paramount Skydance and other players. Gabelli reiterated his belief that the “intrinsic value of libraries”—specifically film and television catalogs—was being ignored by the public market. He noted that he was “highly likely” to tender his clients’ WBD shares to the Paramount Skydance offer, as he believed their plan for theatrical and streaming distribution provided the most significant long-term upside for shareholders. He argued that in an AI-driven distribution world, the content creators who owned the IP held all the cards.
READ MORE: 10 Best Stocks to Buy According to Billionaire Paul Tudor Jones.
Mario Gabelli of GAMCO Investors
Our Methodology
To compile our list of the best stocks to buy according to Billionaire Mario Gabelli, we reviewed the latest 13F filings of GAMCO Investors. Next, we focused on the top 10 stocks in his portfolio. Data for the hedge fund sentiment surrounding each stock was taken from Insider Monkey’s Q4 2025 database of 1041 elite hedge funds.
Why are we interested in the stocks that hedge funds pile into? The reason is simple: our research has shown that we can outperform the market by imitating the top stock picks of the best hedge funds. Our quarterly newsletter’s strategy selects 14 small-cap and large-cap stocks every quarter and has returned 498.7% since May 2014, beating its benchmark by 303 percentage points (see more details here).
Mario Gabelli Stock Portfolio: Top Stock Picks
10. Textron Inc. (NYSE:TXT)
GAMCO Investors’ Stake: $120 Million
Textron Inc. (NYSE:TXT) has been a consistent feature in the 13F portfolio of GAMCO Investors since the third quarter of 2012. Back then, this position comprised just under a million shares. By the third quarter of 2013, Mario Gabelli had increased this holding to more than 1.5 million shares. His fund continued to add to this stake in the coming quarters, growing it to more than 2.1 million shares by the end of the third quarter of 2014. A period of stability followed during which the fund did not make drastic changes to this stake. In late 2017 and early 2018, the fund started buying the stock again, growing the position to around 2.7 million shares. In the coming months, the GAMCO started trimming the holding. Filings for the fourth quarter of 2025 show that the fund owned close to 1.4 million shares in the firm.
Textron Inc. (NYSE:TXT) is turning heads on Wall Street due to a combination of strong performance in the aviation sector, major defense contract execution, and aggressive capital return programs. A primary driver for institutional interest is Textron Aviation. Recent data indicates this division has seen accelerating growth, with sales climbing as much as 36% in late 2025. The strong demand for business jets and the FAA certification of new models like the Beechcraft Denali provide a clear revenue runway. Hedge funds often favor the aviation segment for its ability to generate recurring revenue through parts and maintenance, which offers better margins than one-off sales.
9. AMETEK, Inc. (NYSE:AME)
GAMCO Investors’ Stake: $125 Million
AMETEK, Inc. (NYSE:AME) provides an interesting case study into the thought process behind the investments of Mario Gabelli. His fund first disclosed a stake in the company back in the third quarter of 2012. This position comprised 4.2 million shares but was sold off by the next quarter. A new position was then opened in the fourth quarter of 2013. This holding comprised 3.2 million shares. Since this disclosure, GAMCO Investors has steadily trimmed the stake in each quarter, leading up to the latest filings for the fourth quarter of 2025. These show that the fund owns more than 606,000 shares in the company, down 2.5% compared to filings for the third quarter of 2025.
A core part of the bull thesis for hedge funds with regards to AMETEK, Inc. (NYSE:AME) is the growth model. The company is a prolific acquirer of small to mid-sized niche technology leaders. In early 2026, CEO David Zapico reiterated the company’s commitment to deploying cash flows into acquisitions. Hedge funds are also attracted to the proprietary nature of AMETEK’s products. The company operates through two main segments: Electronic Instruments (EIG) and Electromechanical (EMG). Because many of their instruments are mission-critical, like aerospace sensors, medical power supplies, and laboratory equipment, but represent a small fraction of a customer’s total cost, AMETEK possesses significant pricing power.
8. Sony Group Corporation (NYSE:SONY)
GAMCO Investors’ Stake: $127 Million
Sony Group Corporation (NYSE:SONY) has been a staple in the 13F portfolio of GAMCO Investors since the third quarter of 2012. Back then, this position comprised just over 50,000 shares. The fund started loading up on the stock from the third quarter of 2013 to the second quarter of 2015, growing this position to more than 31 million shares. It then started trimming this holding by a small percentage each quarter. Filings for the fourth quarter of 2025 show that the fund owns just under 5 million shares in the firm, down close to 5% compared to filings for the third quarter of 2025.
Hedge funds are bullish on Sony Group Corporation (NYSE:SONY) that operates as a diversified entertainment powerhouse with high-margin recurring revenue streams in gaming, music, and advanced sensors. Hedge funds increasingly view Sony’s music division as its crown jewel because of its high margins and predictability. As the world’s largest music publisher, Sony benefits directly from the growth of platforms like Spotify and Apple Music. Funds are also betting on the rising value of music catalogs. Sony’s aggressive acquisition of rights – like a major deal for Queen’s catalog and Michael Jackson’s estate – provides long-term IP value that institutions find highly attractive.
7. The Bank of New York Mellon Corporation (NYSE:BK)
GAMCO Investors’ Stake: $141 Million
Mario Gabelli has been a long-term admirer of The Bank of New York Mellon Corporation (NYSE:BK) stock. His fund first disclosed a stake in the company back in the third quarter of 2012. This position comprised over 6 million shares but was sold off within months. A new position was opened in the fourth quarter of 2013. This holding comprised 6.2 million shares. The fund started increasing this stake and grew it to nearly 6.7 million shares by the second quarter of 2015. Since then, however, Gabelli has been steadily trimming this holding. Filings for the fourth quarter of 2025 show that the fund owned 1.2 million shares in the firm, down 7% compared to filings for the previous quarter.
Hedge funds treat The Bank of New York Mellon Corporation (NYSE:BK) as a defensive toll booth for global finance. It oversees roughly $50 trillion in assets under custody and/or administration. Unlike retail banks that rely on risky lending, BNY Mellon earns fee-based income for keeping assets safe. This revenue is highly recurring and difficult for competitors to displace. The complexity of the services BNY provides – clearing, settlement, and data analytics – creates a massive barrier to entry. While BNY is fee-heavy, it still benefits significantly from the higher-for-longer interest rate environment seen in early 2026. The bank earns interest on the massive cash balances held by its institutional clients. Even small increases in rates translate to hundreds of millions in pure profit for the firm.
6. American Express Company (NYSE:AXP)
GAMCO Investors’ Stake: $156 Million
American Express Company (NYSE:AXP) has constantly featured in the 13F portfolio of GAMCO Investors for many years. The fund first disclosed a stake in the company back in the third quarter of 2012. This position comprised just under 4 million shares and was sold off within months. A new position was then opened that comprised 3.4 million shares. Since this disclosure, Gabelli has steadily trimmed this holding. Filings for the fourth quarter of 2025 show that the fund owns 422,000 shares in the company, down more than 5% compared to filings for the third quarter of 2025.
American Express Company (NYSE:AXP) has been a favorite for investors on Wall Street as it is a quality holding, driven by an affluent customer base and a unique position as both a card issuer and a payment network. Unlike traditional banks that rely heavily on interest income from revolving balances, American Express thrives on transaction volume. Hedge funds favor AXP’s ability to collect a percentage of every dollar spent on its cards. In late 2025 and early 2026, the company reported strong discount revenue driven by a 36% growth in spending among Gen-Z and Millennial customers. Because AXP acts as the bank, the processor, and the network, it captures more profit per transaction than competitors who must share fees with third-party banks.
While we acknowledge the potential of AXP to grow, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than AXP and that has 100x upside potential, check out our report about the cheapest AI stock.
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