Berkshire's 10 Shared Stocks Face Divestment Clock as Mullin's 90-Day Sell Deadline Threatens Price Pressure

The common ground between Berkshire Hathaway and Senator Markwayne Mullin's portfolios is a clear, factual list of ten stocks. This shared list, compiled from Mullin's disclosed trades since 2023 and Berkshire's Q4 2025 13F filing, reveals a striking contrast in investment philosophy. The core of Berkshire's massive portfolio is built on five large-cap value giants, each representing a significant portion of the fund. As of year-end 2025, Apple, American Express, Bank of America, Coca-Cola, and Chevron were the conglomerate's top five holdings, with Apple alone accounting for over 22% of the entire portfolio.

This is the bedrock of the Buffett/Munger compounding machine: deep ownership in durable, cash-generating businesses. Yet the list extends beyond these titans. Berkshire also holds positions in Alphabet, Kraft Heinz, Moody's, Occidental Petroleum, and Chubb, blending tech, consumer staples, and financials. The sheer size and concentration in these names underscore a long-term, buy-and-hold strategy focused on intrinsic value and economic moats.

Senator Mullin's recent activity paints a starkly different picture. While he has participated in the Magnificent Seven trade, his recent disclosures show a pivot toward smaller, more speculative names. In January 2026, he reported buying ten stocks, with market capitalizations under $20 billion and two under $5 billion. His purchases included companies like Amkor Technology and VSE Corp, illustrating a style defined by over 500 trades made since 2023. This is the antithesis of Berkshire's patient, decades-long ownership.

The divergence is fundamental. Berkshire's shared holdings represent a portfolio of economic engines, where each position is a cornerstone of a long-term strategy. Mullin's recent buys, by contrast, reflect an active trader's search for momentum in smaller companies, a style that is inherently more volatile and less focused on the timeless principles of competitive advantage and margin of safety. For the value investor, the shared list is a reminder that even common stocks can be held for wildly different reasons.

Evaluating the Holdings: Classic Value vs. Trading Activity

The shared list is a study in contrasts, not just in style but in the fundamental quality of the businesses themselves. For a value investor, the core question is whether a company possesses a durable competitive advantage and can compound value over decades. The answer is clear for some, uncertain for others, and points to a divergence in what each investor is seeking.

The giants Berkshire owns-Apple, American Express, Coca-Cola, and Moody's-are textbook examples of wide economic moats. These are not just profitable companies; they are businesses with pricing power, loyal customer bases, and strong brands that have stood the test of time. Greg Abel highlighted these four as pillars of the portfolio, businesses he expects to "compound over time." Their massive scale and consistent cash flows provide a margin of safety and a long runway for growth. This is the essence of Buffett's value investing: buying a piece of a wonderful business at a fair price. The sheer size of the positions, like Apple's $61.96 billion stake, reflects a belief in their ability to generate wealth for the partnership for generations.

Then there is Kraft Heinz, a company with a long history but a much more questionable future. Berkshire's new CEO has been blunt, calling the investment "disappointing" and criticizing the fund's stake. The criticism centers on stagnant growth and a lack of compounding power. This raises a critical point: even a company with a famous brand and a large market cap can be a poor investment if its competitive position is eroding. For the value investor, the quality of the moat matters more than the size of the company. Kraft Heinz serves as a cautionary note that not all shared holdings are created equal.

Now, contrast this with Senator Mullin's recent purchases. His list of ten stocks bought in January 2026 is dominated by smaller companies, with market capitalizations under $20 billion and two under $5 billion. Names like Amkor Technology and VSE Corp suggest a search for momentum or growth in niche sectors, not a focus on durable competitive advantages. This is a fundamentally different strategy-one that looks for short-to-medium term catalysts rather than long-term compounding. The scale and stability of a Berkshire holding are absent.

The bottom line is that the shared list contains a mix of value and speculation. The large-cap holdings align with classic value criteria, while the smaller names Mullin has been buying point to a different playbook entirely. For the disciplined investor, the true test is not just what is held, but why. The giants represent a bet on enduring economic power, while the smaller trades are a bet on market timing and sector rotation. The moat is the difference.

Catalysts: Leadership Change and Divestment

The portfolios of these two investors are now set to face very different external tests. For Senator Mullin, a legal requirement is creating a near-term catalyst. Upon his confirmation as Homeland Security Secretary, he signed an ethics agreement to divest from dozens of investments within 90 days. This includes major government contractors like L3Harris and RTX, as well as tech giants such as Amazon, Alphabet, and Nvidia. The divestment is a mandatory compliance step, not a judgment on the companies' business quality. Yet, the scale of the required sales introduces a clear source of potential selling pressure on these names.

This creates a direct, if temporary, tension for any shared holdings. If Mullin's portfolio includes stocks also owned by Berkshire, the forced sales could create localized volatility or downward pressure in those specific tickers. For a value investor, the key is to separate the catalyst from the company's intrinsic worth. The ethics rule is a political event, not a fundamental business update. The market's reaction will likely be more about the mechanics of a large, forced sale than any change in the underlying economics of the businesses.

By contrast, Berkshire Hathaway's portfolio is navigating a leadership transition, but with a different kind of stability. The fund is now managed by successors Greg Abel and Ajit Jain, who are expected to maintain the existing strategy of holding high-quality businesses. Abel's early moves, including the sale of the Kraft Heinz position, signal a disciplined approach focused on compounding. His commentary highlighting Apple, American Express, Coca-Cola, and Moody's as businesses expected to "compound over time" provides a clear view of the new guard's philosophy. The catalyst here is not a forced sale, but the market's scrutiny of whether the successors can uphold the legacy of capital allocation.

The bottom line is that one portfolio faces a mandated exit, while the other faces a test of continuity. For the value investor, the Mullin divestment is a reminder that even well-chosen stocks can be subject to external forces beyond management's control. Berkshire's setup, however, is built for such transitions. Its portfolio of wide-moat businesses, overseen by stewards committed to the same long-term principles, is designed to weather changes in ownership or market sentiment. The catalysts are different, but the underlying investment thesis for Berkshire's giants remains intact.

The Value Investor's Takeaway: What to Watch

For the disciplined investor, the shared list is a reminder that common stocks can be held for wildly different reasons. The ultimate test is not the reason for ownership, but the long-term performance of the underlying business. Value investors will judge these holdings on their ability to compound earnings, not on short-term trading activity.

For Berkshire Hathaway, the watchlist is clear. Monitor the consistency of earnings quality and capital allocation by the new management team. The new CEO, Greg Abel, has already signaled his focus by selling the Kraft Heinz position and highlighting Apple, American Express, Coca-Cola, and Moody's as businesses expected to compound over time. The key will be whether successors Greg Abel and Ajit Jain maintain the discipline of reinvesting profits internally, particularly through the massive insurance float. This is the engine that has driven Berkshire's legendary growth. Any deviation from that strategy would be a red flag.

For Senator Mullin's portfolio, the immediate catalyst is the clock. He has divested from dozens of investments within 90 days of his confirmation. The pace and scale of his sales will reveal the true commitment to his ethics agreement. This is a forced exit, not a fundamental reassessment. For value investors, the lesson is that even well-chosen stocks can be subject to external forces beyond management's control. The market's reaction will likely be more about the mechanics of a large, forced sale than any change in the underlying economics.

The bottom line is that the shared list contains a mix of value and speculation. The giants represent a bet on enduring economic power, while the smaller trades are a bet on market timing. For the patient investor, the focus should remain on the timeless principles of competitive advantage and margin of safety. The shared holdings are a starting point, not an end. Watch the actions of the stewards of capital, and let the passage of time reveal which bets were truly worth making.