Warren Buffett's Successor, Greg Abel, Has Over $42 Billion of Berkshire Hathaway's Capital Invested in 3 Virtual Monopolies

Following Warren Buffett's retirement as Berkshire Hathaway CEO, Greg Abel oversees a $358 billion investment portfolio, including more than $42 billion concentrated in Alphabet, Sirius XM and VeriSign. Alphabet is Berkshire's third-largest holding at $36.37 billion after Abel more than tripled the stake and added a further $17 billion in the June-ended quarter, supported by Google's 91%-plus global search share and AI-driven Google Cloud growth. Berkshire also owns 37% of Sirius XM ($3.23 billion) and 10% of VeriSign ($2.58 billion), whose legal-monopoly positions and subscription or registry models support predictable cash flow and pricing power.

Analysis

The actionable signal is not the ownership concentration itself, but whether Berkshire’s post-succession capital allocation is becoming more willing to underwrite platform businesses at scale. A confirmed increase in GOOG would add an influential valuation-sensitive buyer, but it does not alter Alphabet’s near-term earnings debate: AI search answers can raise query engagement while simultaneously lowering monetizable click volume. The next 1-3 months hinge on Search revenue growth relative to traffic-acquisition costs and whether Cloud’s AI revenue converts into operating-margin expansion rather than merely higher depreciation and capex.

SIRI is the weakest fundamental read-through despite its apparently defensive subscription mix. Its fixed-cost structure creates negative operating leverage if the auto-sales funnel and self-pay subscriber base continue to erode, while high leverage limits the value of predictable cash flow. Berkshire’s large ownership can support the stock through reduced float and eventual strategic optionality, but it also makes an incremental open-market purchase less likely and raises the risk that SIRI trades primarily on capital-return capacity rather than growth.

VRSN is the cleaner monopoly-duration asset, but the relevant variable is regulatory rent extraction, not domain volume. Its valuation can sustain only if permitted price increases and buybacks outpace low-single-digit registration growth; an adverse ICANN/Commerce Department renewal process would compress the multiple quickly despite resilient cash generation. Contrarian view: this article is retrospective and promotional, with low standalone information value; treat claimed portfolio changes as unconfirmed until the relevant Berkshire filing rather than chasing the named equities.

Key Decisions for Investors

• Initiate no event-driven BRK.A/BRK.B trade solely on this report; verify the next 13F and Berkshire annual-report disclosures. A confirmed large GOOG addition would be modestly supportive of GOOG technicals, but is unlikely to be material enough to change Berkshire’s own earnings profile.
• Accumulate GOOG on post-earnings weakness only if Search revenue growth remains ahead of consensus and Google Cloud operating margin expands sequentially; target a 6-12 month long with a 15-20% upside framework. Exit or hedge if AI-overview adoption produces a visible deceleration in paid-click growth without offsetting pricing gains.
• Avoid treating SIRI as a defensive long until net subscriber trends stabilize and free cash flow after interest expense covers buybacks and debt reduction. A break in self-pay subscribers or weaker OEM conversion is the key 1-3 month downside catalyst; consider SIRI as a short candidate only after a failed rally into earnings, with borrow availability and Berkshire-related take-private optionality as primary risks.
• Maintain VRSN as a defensive watch-list long rather than chase it at a premium multiple. Enter on regulatory-renewal clarity or a valuation reset; the thesis is falsified by restrictions on future .com pricing, material registry-fee increases, or buybacks funded with meaningfully higher leverage.