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Mario Gabelli Stock Portfolio: Top 10 Stock Picks

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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.

READ MORE: 15 Best Stocks to Buy According to Billionaire Ray Dalio.

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.

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The $250 Trillion AI Hype is Real. A few years from now, you’ll probably wish you’d bought this stock.

Dr. Inan Dogan

Dr. Ian Dogan

Co-Founder and Research Director at Insider Monkey

When Jeff Bezos said that one breakthrough technology would shape Amazon’s destiny, even Wall Street’s biggest analysts were caught off guard.

Fast forward a year and Amazon’s new CEO Andy Jassy described generative AI as a “once-in-a-lifetime” technology that is already being used across Amazon to reinvent customer experiences.

At the 8th Future Investment Initiative conference, Elon Musk predicted that by 2040 there would be at least 10 billion humanoid robots, with each priced between $20,000 and $25,000.

Do the math. According to Musk, this technology could be worth $250 trillion by 2040.

Put another way, that’s roughly equal to:

  • 175 Teslas
  • 107 Amazons
  • 140 Metas
  • 84 Googles
  • 65 Microsofts
  • And 55 Nvidias

And here’s the wild part — this $250 trillion wave isn’t tied to one company, but to an entire ecosystem of AI innovators set to reshape the global economy.

It’s a leap so massive, it could reshape how businesses, governments, and consumers operate worldwide.

Even if that $250 trillion figure sounds ambitious, major firms like PwC and McKinsey still see AI unlocking multi-trillion-dollar potential.

How could anything be worth that much?

The answer lies in a breakthrough so powerful it’s redefining how humanity works, learns, and creates.

And this breakthrough has already set off a frenzy among hedge funds and Wall Street’s top investors.

What most investors don’t realize is that one under-owned company holds the key to this $250 trillion revolution.

In fact, Verge argues this company’s supercheap AI technology should concern rivals.

Before I reveal the details, let’s talk about how some of the richest people on the planet are positioning themselves.

  • Bill Gates sees artificial intelligence as the “biggest technological advance in my lifetime,” more transformative than the internet or personal computer, capable of improving healthcare, education, and addressing climate change.
  • Larry Ellison — through Oracle, is spending billions on Nvidia chips and partnering with Cohere to embed generative AI across Oracle’s cloud and apps.
  • Warren Buffett — not known for tech hype — says this breakthrough could have a ‘hugely beneficial social impact.

When billionaires from Silicon Valley to Wall Street line up behind the same idea — you know it’s worth paying attention to.

Even as we admire what Tesla, Nvidia, Alphabet, and Microsoft have built, we believe an even greater opportunity lies elsewhere…

But the real story isn’t Nvidia — it’s a much smaller company quietly improving the critical technology that makes this entire revolution possible.

And judging by what I’m hearing from both Silicon Valley insiders and Wall Street veterans…

This prediction might not be bold at all:

A few years from now, you’ll wish you’d owned this stock.

The best part? You can discover everything about this company and its groundbreaking technology right now.

I’ve compiled everything you need to know about this groundbreaking company in a detailed, members-only report.

Trust me — you’ll want to read this report before putting another dollar into any tech stock.

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Wall Street calls this $3 stock a “Melting Ice Cube.” They said the same thing about BTI before it returned 90%.

Dr. Inan Dogan

Dr. Ian Dogan

Co-Founder and Research Director at Insider Monkey

My name is Inan Dogan. I’m the co-founder and Research Director of Insider Monkey. I have an important message for you today.

Since March 2017, my stock picks have returned 16.5% annually. Today, I’ve found an opportunity even bigger than my British American Tobacco call.

Two years ago, Wall Street wrote off British American Tobacco (BTI) as a “melting ice cube.” The stock had crashed 40% from its peak, and consensus said the business was dying.

We looked under the cover and realized they were wrong.

We alerted our subscribers, and BTI returned 90% in just 16 months.

Now if you had invested just $10,000 in BTI in June 2024, you’d be sitting on $19,000 in October 2025.

Today, we have identified a nearly identical pattern in a digital-first giant trading at $3.

While the market panics over a surface-level revenue decline, our PhD-led research shows management has actually surgically cut $100 million in waste to focus on high-margin growth.

This pattern is a hallmark of our 16.5% annual return track record. The current opportunity offers a 400% upside potential—dwarfing even our 90% BTI return.

Get the ticker for our new “Underdog” pick and the full BTI case study for just 99 cents.

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1. Head over to our website and subscribe to our Premium Readership Newsletter for just $0.99.

2. Enjoy a month of ad-free browsing, exclusive access to our in-depth report on the Trump tariff and nuclear energy company as well as the revolutionary AI-robotics company, and the upcoming issues of our Premium Readership Newsletter.

3. Sit back, relax, and know that you’re backed by our ironclad 30-day money-back guarantee.

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Regular price $9.99/mo. Cancel anytime.