Berkshire Hathaway 13F Confidential Holding & Stock Impact
Centerpiece: Berkshire Hathaway 13F report Portfolio Holdings & Capital Allocation Matrix
A quantitative examination of core warren buffet holdings shows that pricing power and disciplined capital allocation remain top priorities across public equity investments:
| Ticker / Company | Quarterly Action | Share Count | Portfolio Weight (%) | Market Value | Forward P/E | Investment Thesis & Moat |
|---|---|---|---|---|---|---|
|
AAPL
Apple Inc.
|
CORE HOLDING (HOLD) | 300.0M Shares (held flat) | 22.0% of Equity Portfolio | $65.8 Billion | 34.2x P/E | Maintained position in Q2 2026 following prior trims; remains the largest equity holding at 22.0% of Berkshire's $299.3B equity portfolio as of June 30, 2026. |
|
AXP
American Express Company
|
CORE PILLAR (UNTOUCHED) | 151.6M Shares (21.4% Stake) | 15.2% of Equity Portfolio | $38.7 Billion | 19.8x P/E | Premier consumer spend network with peerless brand loyalty, affluent demographic spend insulation, and regular dividend compound growth. |
|
BAC
Bank of America Corporation
|
REGULATORY TRIM (<10%) | 680.0M Shares (Trimmed <10%) | 10.5% of Equity Portfolio | $26.8 Billion | 13.4x P/E | Systematic selling pushed ownership under the 10% statutory threshold, eliminating immediate two-day insider transaction report public disclosure requirements. |
|
KO
The Coca-Cola Company
|
PERMANENT COMPOUNDER | 400.0M Shares (9.3% Stake) | 9.8% of Equity Portfolio | $25.1 Billion | 24.6x P/E | Classic high-return-on-capital compounder yielding over 55% annual cash yield on original cost basis through growing dividends. |
|
CVX
Chevron Corporation
|
ENERGY HEDGE (STABLE) | 118.6M Shares (6.4% Stake) | 6.9% of Equity Portfolio | $17.6 Billion | 14.1x P/E | Global integrated energy major providing upstream inflation protection, substantial dividend yield, and capital discipline via share repurchases. |
|
OXY
Occidental Petroleum Corp.
|
STEADY BUY (+3.2%) | 255.3M Shares (28.8% Stake) | 5.8% of Equity Portfolio | $14.8 Billion | 13.9x P/E | Regulatory approval holds to acquire up to 50% of OXY; low breakeven Permian Basin assets paired with Direct Air Capture carbon technology. |
|
MCO
Moody's Corporation
|
UNTOUCHED MONOPOLY | 24.7M Shares (13.5% Stake) | 4.4% of Equity Portfolio | $11.2 Billion | 42.1x P/E | Duopoly credit rating moat with immense pricing power that compounds automatically with global debt issuance volume. |
|
CB
Chubb Limited
|
CONFIDENTIAL STAKE | 27.0M Shares ($6.7B Accumulated) | 2.6% of Equity Portfolio | $6.7 Billion | 12.2x P/E | Revealed after multiple quarters of confidential treatment status; premier commercial property and casualty underwriter with stellar underwriting float. |
Berkshire Hathaway 13F report & Warren Buffett Portfolio Tracker Playbook: Capital Allocation, Apple Positioning, and Treasury Cash Reserves
Institutional forensic analysis of quarterly U.S. securities-regulator disclosure documents. Every institutional filing cycle, the official berkshire hathaway 13f discloses Warren Buffett's multi-billion dollar public equity positions, capital allocation shifts, and risk management strategies across major market sectors.
What Is 13F report and How Does Berkshire File?
Institutional investors dissect quarterly berkshire hathaway 13f filings to analyze net changes in common stock ownership and position sizing, filed within 45 days after the end of each calendar quarter by institutional investment managers exercising discretion over $100 million or more in Section 13(f) securities.
What Are the Largest Positions in Berkshire's Portfolio?
Within the warren buffett current portfolio, five cornerstone holdings account for more than 70% of total equity assets: Apple (AAPL, 22.0%), American Express (AXP, 15.2%), Bank of America (BAC, 10.5%), Coca-Cola (KO, 9.8%), and Chevron (CVX, 6.9%), alongside a significant 28.8% strategic stake in Occidental Petroleum (OXY).
Why Does Berkshire Maintain $365.4 Billion in Cash & T-Bills?
Analyzing the long-term historical performance of the warren buffett portfolio reveals an unparalleled concentration in companies with durable competitive moats, paired with massive dry-powder reserves earning 4.4% to 5.0% on U.S. Treasury bills while awaiting valuation resets in broad equities.
Berkshire Hathaway 13F Confidential Holding Impact on Stock Price
A Berkshire Hathaway 13F confidential holding creates an immediate asymmetric stock price impact upon public U.S. securities-regulator disclosure. Under Section 13(f)(3) and Rule 24b-2, Warren Buffett obtains confidential treatment to accumulate multi-billion dollar stakes without triggering market front-running. Once an amended filing or quarterly 13F report reveals the confidential holding (such as Chubb Limited CB, Chevron, or Occidental), the stock typically surges 6% to 12% on heavy institutional copycat inflows and retail buying pressure.
1. Regulatory Mechanics of 13F report: The 45-Day Rule & Confidential Treatment Status
Under Section 13(f) of the Securities Exchange Act of 1934, institutional investment managers exercising investment discretion over $100 million or more in exchange-traded equities must submit quarterly public disclosures. Reports are mandated within 45 calendar days following the conclusion of each fiscal quarter (February 15, May 15, August 14, and November 14).
Retail investors tracking the broader brk b portfolio examine how cash reserves and short-term Treasuries complement underlying stock investments. A critical institutional dynamic is the Confidential Treatment protocol: when premature public knowledge of an ongoing accumulation program would disrupt market pricing, managers may request temporary non-disclosure. A prime historical example is Berkshire's confidential multi-billion dollar position in Chubb Limited (CB), accumulated across multiple quarters before public revelation.
Stock Price Impact of Confidential Treatment Revelations: The market impact of a Berkshire Hathaway 13F confidential holding follows a predictable quantitative pattern. While confidential treatment remains active, trading volume in the target security often reflects stealth institutional accumulation with elevated dark pool prints. Upon public unveiling in an amended 13F disclosure, the immediate announcement effect produces a statistically significant abnormal return—averaging +8.3% over the subsequent 5 trading sessions—as algorithmic copy-trading engines, mutual funds, and retail investors reprice the equity to incorporate the Warren Buffett moat endorsement. Investors can model these filings using the Berkshire 13F Tracker Tool or cross-reference historical superinvestor holding changes on the Dataroma 13F Tracker guide.
| Confidential Holding (Ticker) | Stealth Accumulation Quarters | Disclosed Stake at Reveal | Stock Price Impact (Reveal Window) | Regulatory Filing Mechanism |
|---|---|---|---|---|
| Chubb Limited (CB) | Q3 2023 – Q1 2024 | 25.9M–27.0M shares (~$6.7B) | +7.2% Day-1 gap · +8.3% 5-Day surge | Section 13(f)(3) Rule 24b-2 omission + amended 13F reveal |
| Chevron Corp. (CVX) | Q3 2020 – Q4 2020 | 48.5M shares (~$4.1B) | +5.4% post-disclosure re-rating | Confidential 13F treatment during energy sector accumulation |
| Verizon (VZ) | Q3 2020 – Q4 2020 | 146.7M shares (~$8.6B) | +5.2% immediate session jump | Multi-quarter confidential treatment followed by amended 13F report |
Institutional Point-in-Time Data Feeds for Quantitative Funds: Systematic equity teams evaluating public-record disclosure lags alongside federal procurement and congressional transaction streams can inspect our Data Coverage & Completeness specifications, sample point-in-time records on the Data Preview Hub, review entity-resolution rules on the Point-in-Time Methodology page, audit out-of-sample calibration on the Forecast Track Record, download open tables via Open Datasets, or integrate machine-readable feeds through the Institutional REST API (API Data License).
2. Portfolio Concentration & The Big Five Holdings
Unlike conventional index funds that practice broad asset diversification, Berkshire concentrates capital in businesses with durable competitive advantages, immense pricing power, and disciplined management. The top five equity holdings represent over 70% of the public equity book, spanning consumer franchises, banking infrastructure, and integrated energy providers.
Following prior trims from peak levels of 905 million shares down to 300 million shares, Apple remains the single largest position at 22.0% of the equity portfolio. Management held the Apple stake flat in Q2 2026, viewing the company as an indispensable consumer product ecosystem rather than a cyclical tech play. Meanwhile, ongoing accumulations in Occidental Petroleum provide a vital hedge against geopolitical inflation.
3. Bank of America Sells & The 10% Ownership Regulatory Threshold
A key governance milestone in recent filing periods has been Berkshire's reduction of Bank of America common stock below the statutory 10% threshold. Above 10%, an institutional investor is classified as an insider under Section 16 of the Exchange Act, requiring insider transaction filings within two business days of any trade.
By trimming its BAC stake under 10%, Berkshire regained complete execution privacy, permitting future rebalancing without immediate regulatory disclosure until regular quarterly reporting cycles.
4. The $365.4 Billion Treasury Reserve & Sovereign Liquidity Advantage
With $365.4 billion in short-term U.S. Treasury bills and cash equivalents as of the Q2 2026 corporate balance sheet, Berkshire holds more 3-month and 6-month paper than many sovereign central banks. Earning risk-free yields between 4.4% and 5.0%, this liquidity buffer generates over $16 billion in annualized interest income.
This liquidity fortress serves as defensive ballast during elevated market valuation cycles, providing dry powder to execute opportunistic, large-scale acquisitions when systemic disruptions depress enterprise valuations.
Frequently Asked Questions: Berkshire Hathaway 13F Analysis
1. What is the Berkshire Hathaway 13F filing and who is required to file it?
The Berkshire Hathaway 13F report is a mandatory quarterly regulatory filing submitted to the United States the U.S. securities regulator. Under Section 13(f) of the Securities Exchange Act of 1934, institutional investment managers exercising investment discretion over $100 million or more in Section 13(f) securities must report their equity holdings within 45 days after the end of each calendar quarter. For Berkshire Hathaway, this public disclosure reveals the equity positions managed directly by Warren Buffett, alongside portfolio managers Todd Combs and Ted Weschler.
2. What are the top holdings in the current Warren Buffett portfolio?
The Warren Buffett portfolio remains highly concentrated, with the top five holdings comprising over 70% of Berkshire Hathaway total equity assets. Key holdings include Apple Inc. (NASDAQ: AAPL), American Express Company (NYSE: AXP), Bank of America Corporation (NYSE: BAC), The Coca-Cola Company (NYSE: KO), and Chevron Corporation (NYSE: CVX), complemented by a major controlling position in Occidental Petroleum Corporation (NYSE: OXY).
3. Why did Warren Buffett aggressively sell Apple and Bank of America stock?
Warren Buffett reduced Berkshire Hathaway Apple position by more than 60% and systematically trimmed Bank of America below the 10% regulatory threshold. At the Berkshire Hathaway annual meeting, Buffett indicated that capturing substantial unrealized capital gains at current federal corporate tax rates of 21% is financially prudent ahead of potential future fiscal tax hikes. Furthermore, stretched market valuations and elevated price-to-earnings multiples relative to historic norms incentivized harvesting profit.
4. Why is Berkshire Hathaway holding substantial cash and Treasury bills exceeding $300 billion?
Berkshire Hathaway accumulated a cash and short-term US Treasury bill reserve of $365.4 billion as of June 30, 2026 because Warren Buffett prioritizes capital preservation over deploying capital into richly priced assets. By rolling short-duration US Treasury bills yielding 4% to 5%, Berkshire earns billions in risk-free annualized float while maintaining dry powder for opportunistic acquisitions during market dislocations.
5. How can retail investors copy the Berkshire Hathaway 13F portfolio despite the 45-day lag?
Investors copying Berkshire Hathaway 13F filings must recognize the 45-day disclosure lag. Because Warren Buffett invests with a multi-decade horizon based on durable competitive advantages (economic moats) and steady free cash flow, the 45-day lag is less disadvantageous for long-term compounders than for momentum trades. Investors should monitor insider transaction filings for intra-quarter transactions in positions exceeding 10% ownership, such as Occidental Petroleum.
6. How does a Berkshire Hathaway 13F confidential holding impact stock prices?
A Berkshire Hathaway 13F report confidential holding creates an asymmetric stock price impact upon U.S. securities-regulator disclosure. Under Section 13(f)(3) and Rule 24b-2, Berkshire requests confidential treatment while building large stakes to prevent market front-running. When an amended or quarterly 13F report publicly reveals the secret position (such as Chubb CB, Chevron, or Occidental), the stock price historically surges by 6% to 12% in immediate trading due to copycat fund flows, retail momentum, and the perceived Warren Buffett quality seal.
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