Who Is Buying Berkshire Hathaway? Hedge Fund Activity in 2026
See which hedge funds are buying, selling, or holding Berkshire Hathaway (BRK.B) stock based on the latest SEC 13F filings. Complete institutional ownership breakdown.
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Who Is Buying Berkshire Hathaway? Hedge Fund Activity in 2026
Berkshire Hathaway is the ultimate compounder — Warren Buffett's conglomerate has delivered an annualized return of roughly 20% since 1965, turning a struggling textile company into a $1 trillion empire spanning insurance, railroads, energy, and a massive equity portfolio. For hedge funds, owning Berkshire is both a value play and a way to gain diversified exposure through one of the most disciplined capital allocators in history.
Here's what the latest 13F filings reveal about institutional activity in BRK.
Quick Answer
Across the funds we read directly from SEC filings, the largest Berkshire Hathaway position in the Q2 2026 13Fs (period ending 30 June 2026) is Citadel Advisors at $572M (1,085,781 shares). Measured against the size of each filer's book rather than in dollars, the most concentrated holder is Citadel Advisors, where Berkshire Hathaway is 0.3% of everything they report. Every figure here is aggregated by CUSIP from the filer's own information table with put/call rows excluded — a 13F lists options beside shares, and adding them together is what produces the inflated stakes quoted elsewhere. Filings lag roughly 45 days: this is positioning as of 30 June 2026, not today, and not investment advice.
Berkshire Hathaway at a Glance
| Metric | Value |
|---|---|
| Ticker | BRK.B (Class B) / BRK.A (Class A) |
| Sector | Financials — Diversified Conglomerates |
| Market Cap | ~$1.05 trillion |
| 52-Week Range | $380 – $520 (BRK.B) |
| Institutional Ownership | ~62% of float |
| Cash Position | ~$325 billion |
Berkshire's unprecedented $325 billion cash pile has become one of the most discussed topics among institutional investors. Some see it as dry powder for a massive acquisition; others view it as a signal that Buffett sees limited value in current markets.
Who holds Berkshire Hathaway, and how much it matters to them
Read from each filer's Q2 2026 information table (period ending 30 June 2026).
| Fund | Position | Shares | Share of the fund's 13F book |
|---|---|---|---|
| Citadel Advisors | $572M | 1,085,781 | 0.3% of $171.84B |
| Millennium Management | $313M | 587,695 | 0.2% of $142.92B |
| Renaissance Technologies | $892k | 1,791 | 0.0% of $72.62B |
The last column is the one worth reading. A multi-strategy fund reporting a $100B+ book can hold a large dollar amount of Berkshire Hathaway that means almost nothing to it, while a concentrated fund holding less in dollars may have several percent of its entire book in the name. Rankings by dollar value hide exactly that difference.
Who's Reducing Berkshire?
Notably few major funds are selling Berkshire — it's one of the most consensus long positions among institutional investors. Some minor trimming has occurred:
1. Renaissance Technologies
Renaissance modestly reduced its BRK position by approximately 15%, likely due to systematic rebalancing rather than fundamental concerns.
2. Two Sigma Investments
Two Sigma trimmed its Berkshire stake by roughly 10% in Q4, with quant models potentially rotating toward higher-momentum opportunities.
Why Hedge Funds Like Berkshire Hathaway
1. The Cash Fortress Berkshire's $325 billion cash position is an enormous strategic asset. It provides optionality for large acquisitions during market dislocations, protects against economic downturns, and generates significant interest income at current rates (~$18 billion annually).
2. Insurance Float Berkshire's insurance operations (GEICO, Berkshire Hathaway Reinsurance, General Re) generate a "float" of over $170 billion — money collected in premiums before claims are paid. This float is invested at no cost, creating a permanent, low-cost source of capital that no other company can replicate.
3. Operating Business Portfolio Beyond investments, Berkshire owns dozens of operating businesses — BNSF Railway, Berkshire Hathaway Energy, Precision Castparts, Dairy Queen, and many more. These generate roughly $40 billion in annual operating earnings, providing stable cash flows independent of stock market performance.
4. Succession Clarity With Greg Abel designated as Buffett's successor and Ted Weschler and Todd Combs managing portions of the investment portfolio, the succession plan is clearer than ever. Hedge funds take comfort in knowing the operational management team is already in place and executing.
5. Valuation Discount Berkshire frequently trades at a discount to the sum of its parts. When you add up the value of its operating businesses, equity portfolio, and cash, many analysts arrive at an intrinsic value 10-20% above the current stock price. This margin of safety appeals to value-focused hedge funds.
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See your Freedom Runway — freeRecent Institutional Moves
The 13F data for Berkshire in early 2026 shows consistent institutional accumulation:
- New positions opened: Approximately 260 funds initiated new BRK positions in Q4 2025
- Positions increased: Roughly 680 funds added to existing holdings
- Positions reduced: About 290 funds trimmed their stakes
- Positions exited: Approximately 110 funds closed their Berkshire positions entirely
The buy-to-sell ratio is notably lopsided, making Berkshire one of the most net-bought stocks among hedge funds in Q4 2025. The defensive appeal during periods of market uncertainty, combined with Berkshire's growing operating earnings, has attracted both value and macro-oriented institutional buyers.
How to Track Berkshire Hathaway Institutional Activity with Freenance
Freenance's Smart Money Tracker makes monitoring institutional activity in Berkshire effortless:
- Comprehensive 13F data showing every fund that holds BRK, updated quarterly
- Position change tracking that highlights significant accumulation and distribution patterns
- Historical ownership trends to visualize how institutional conviction has evolved
- Watchlist alerts when major hedge funds adjust their Berkshire positions
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Frequently Asked Questions
What's the difference between BRK.A and BRK.B?
BRK.A (Class A) shares trade at approximately $580,000 per share and carry full voting rights. BRK.B (Class B) shares trade at roughly 1/1,500th the price (~$480) with proportionally reduced voting rights. Most institutional investors hold BRK.B due to its lower per-share price and better liquidity. The economic interest is equivalent.
How many hedge funds own Berkshire Hathaway?
As of Q4 2025, approximately 4,100 institutional investors report Berkshire positions in their 13F filings. Among hedge funds, roughly 850+ hold BRK shares. Berkshire's unique status as both an operating company and an investment vehicle makes it attractive to a wide range of institutional strategies.
Will Berkshire Hathaway perform well after Warren Buffett?
This is the single most common question among institutional investors. Most hedge funds that hold Berkshire believe the company's decentralized operating structure and strong business portfolio will continue to perform regardless of leadership. The investment portfolio management may evolve, but the core operating businesses are largely self-running.
Why doesn't Berkshire pay a dividend?
Warren Buffett has long argued that he can generate better returns by reinvesting capital than shareholders would achieve on their own. With Berkshire's track record, most institutional investors agree. However, as the cash pile has grown, some hedge funds expect Berkshire to eventually initiate a dividend or accelerate share buybacks.
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- Berkshire Hathaway — Warren Buffett's Fund Profile & 13F Portfolio
- Bridgewater Associates — Ray Dalio's Fund Profile & 13F Portfolio
- Citadel Advisors — Ken Griffin's Multi-Strategy Fund Profile
- BlackRock — Profile of the World's Largest Asset Manager
- Millennium Management — Israel Englander's Pod Model Fund Profile
- Capital Research Global Investors — Profile of the American Funds Powerhouse
FAQ
Why do so many hedge funds hold Berkshire Hathaway (BRK.B)?
Berkshire is effectively a diversified conglomerate — insurance, railroads, energy, consumer brands and a large equity portfolio — so it behaves like an all-weather core holding rather than a single-sector bet. That defensive profile is one reason it shows up in macro, value and multi-strategy funds, though that does not make it suitable for every investor.
How big is Berkshire's cash pile and why does it matter?
Berkshire's reported cash and short-duration Treasuries are at historically high levels, which gives the company optionality for large acquisitions and interest income while also signalling caution about market valuations. Institutional investors watch this number closely, but it is one input among many and not a market-timing tool.
Who has been adding to BRK in the most recent 13F cycle?
Recent filings show accumulation from Bridgewater, Citadel, Capital Research, BlackRock's active strategies, Millennium and D.E. Shaw, with relatively few sellers among the largest funds. As always, 13F snapshots are point-in-time disclosures, not forecasts of future returns.
How is succession at Berkshire affecting institutional sentiment?
With Greg Abel designated as Buffett's operational successor and Ted Weschler and Todd Combs running parts of the equity portfolio, institutional investors generally view succession risk as manageable. That said, leadership transitions can change capital allocation style, which is one of the reasons the cash pile and buyback policy are watched so closely.
How can I follow BRK ownership changes inside Freenance?
Freenance's Smart Money Tracker aggregates SEC 13F filings so you can see which funds hold BRK.B, how positions have changed quarter-over-quarter and how BRK weights against other holdings in each fund. It is an informational tool to help you do your own research, not investment advice.