13F GuideFiling Basics
What is SEC Form 13F? Ultimate Guide to Institutional Equity Filings
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
AlphaSMO Research GuideRead Guide
CIK: 0001032814
Total reported value
$3.7B
$3.7B
50 檔
69.9%
During the Q3 2025 filing period, Check Capital Management Inc/ca (CIK: 0001032814) submitted its Form 13F report to the U.S. SEC, disclosing a tracked public equity portfolio valued at $3.7B across 50 reported positions.
In Q3 2025, Check Capital Management Inc/ca adopted a defensive or profit-taking posture, trimming 17 positions and completely liquidating 3 holdings to manage risk exposure.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 65.77% | +0.37% | -1.70% | |
| 2 | BN | Brookfield CORP | Stock-Financials | 6.62% | -0.15% | -0.49% | |
| 3 | ✓ | Stock-Other | 5.74% | — | -0.91% | ||
| 4 | MKL | Markel Group Inc | Stock-Financials | 4.89% | -0.15% | -0.30% | |
| 5 | ✓ | Stock-Other | 3.32% | — | -0.79% | ||
| 6 | FCNCA | First Citizens Bcshs -cl A | Stock-Financials | 2.09% | +0.04% | +3.14% | |
| 7 | DIS | Walt Disney Co/the | Stock-Comm Services | 1.64% | -0.07% | +0.19% | |
| 8 | LKQ | Lkq CORP | Stock-Consumer Disc | 1.60% | -0.31% | +0.07% | |
| 9 | SIRI | Sirius Xm Holdings Inc | Stock-Comm Services | 1.58% | +0.33% | +76.74% | |
| 10 | ✓ | Stock-Other | 1.56% | — | +0.63% | ||
| 11 | HSY | Hershey Co/the | Stock-Consumer Staples | 1.17% | -0.20% | +1.40% | |
| 12 | KMX | Carmax Inc | Stock-Consumer Disc | 0.89% | — | +0.18% | |
| 13 | ✓ | Cimpress | Stock-Other | 0.80% | +0.28% | +4.39% | |
| 14 | BRK-A | Berkshire Hathaway Inc-cl A | Stock-Other | 0.72% | -0.05% | — | |
| 15 | ✓ | Stock-Other | 0.49% | — | +0.52% | ||
| 16 | AAPL | Apple Inc | Stock-Tech | 0.21% | -0.17% | EXIT | |
| 17 | BAC | Bank Of America CORP | Stock-Financials | 0.14% | -0.02% | EXIT | |
| 18 | ✓ | Stock-Other | 0.11% | — | -4.33% | ||
| 19 | MSFT | Microsoft CORP | Stock-Tech | 0.10% | -0.07% | EXIT | |
| 20 | TRUP | Trupanion Inc | Stock-Other | 0.06% | -0.03% | EXIT | |
| 21 | AMGN | Amgen Inc | Stock-Healthcare | 0.04% | -0.04% | EXIT | |
| 22 | ✓ | Stock-Other | 0.04% | — | -3.09% | ||
| 23 | ✓ | Stock-Other | 0.03% | — | — | ||
| 24 | AEP | American Electric Power Company, Inc. | Stock-Utilities | 0.03% | -0.02% | EXIT | |
| 25 | ✓ | Stock-Other | 0.03% | — | +0.08% | ||
| 26 | CAT | Caterpillar Inc | Stock-Industrials | 0.03% | -0.04% | EXIT | |
| 27 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 0.02% | +0.07% | — | |
| 28 | BAM | Brookfield Asset Mgmt-a | Stock-Financials | 0.02% | -0.02% | EXIT | |
| 29 | ✓ | Stock-Other | 0.02% | — | — | ||
| 30 | XT | Ishar Fture Exp Tech Etf-usd | ETF-Tech | 0.02% | -0.02% | EXIT | |
| 31 | GEV | GE Vernova Inc | Stock-Industrials | 0.02% | -0.02% | EXIT | |
| 32 | RTX | Rtx CORP | Stock-Industrials | 0.02% | -0.02% | EXIT | |
| 33 | UBER | Uber Technologies Inc | Stock-Industrials | 0.02% | -0.01% | EXIT | |
| 34 | ✓ | Stock-Other | 0.01% | — | — | ||
| 35 | GLW | Corning Inc | Stock-Tech | 0.01% | -0.02% | EXIT | |
| 36 | ✓ | Stock-Other | 0.01% | — | +1.42% | ||
| 37 | FAST | Fastenal Co | Stock-Industrials | 0.01% | -0.01% | EXIT | |
| 38 | ✓ | Stock-Other | 0.01% | — | -10.60% | ||
| 39 | WFC | Wells Fargo & Co | Stock-Financials | 0.01% | -0.01% | EXIT | |
| 40 | ✓ | Stock-Other | 0.01% | — | — | ||
| 41 | SCHG | Schwab US Large-cap Growth | ETF-Other | 0.01% | -0.01% | EXIT | |
| 42 | ✓ | Stock-Other | 0.01% | — | +0.10% | ||
| 43 | ITW | Illinois Tool Works | Stock-Industrials | 0.01% | -0.01% | EXIT | |
| 44 | BA | Boeing Co/the | Stock-Industrials | 0.01% | -0.01% | EXIT | |
| 45 | ✓ | Stock-Other | 0.01% | — | +0.31% | ||
| 46 | ✓ | Stock-Other | 0.01% | — | — | ||
| 47 | ✓ | Stock-Other | 0.01% | — | — | ||
| 48 | ✓ | Stock-Other | 0.01% | — | — | ||
| 49 | CVX | Chevron CORP | Stock-Energy | 0.01% | -0.01% | EXIT | |
| 50 | CFG | Citizens Financial Group | Stock-Financials | 0.01% | -0.01% | EXIT |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | +2.4% | -0.91% | Trim | |
| 2 | BN | Brookfield CORP | +2% | -0.49% | Trim |
| 3 | SIRI | Sirius Xm Holdings Inc | +0.8% | +76.74% | Add |
| 4 | ✓ | +0.8% | -0.79% | Trim | |
| 5 | MKL | Markel Group Inc | +0.6% | -0.30% | Trim |
| 6 | DIS | Walt Disney Co/the | +0.4% | +0.19% | Trim |
| 7 | ✓ | +0.3% | +0.52% | Add | |
| 8 | ✓ | Cimpress | +0.3% | +4.39% | Add |
| 9 | FCNCA | First Citizens Bcshs -cl A | +0.3% | +3.14% | Add |
| 10 | HSY | Hershey Co/the | +0.2% | +1.40% | Add |
| 11 | ✓ | +0.1% | +0.63% | Trim | |
| 12 | ✓ | 0% | -4.33% | Trim | |
| 13 | AAPL | Apple Inc | 0% | -4.80% | Trim |
| 14 | MSFT | Microsoft CORP | 0% | — | Add |
| 15 | BAC | Bank Of America CORP | 0% | -4.06% | Trim |
| 16 | ✓ | 0% | -3.09% | Trim | |
| 17 | ✓ | 0% | +0.08% | Add | |
| 18 | AEP | American Electric Power Company, Inc. | 0% | — | Unchanged |
| 19 | ✓ | 0% | — | Unchanged | |
| 20 | GEV | GE Vernova Inc | 0% | — | Unchanged |
| 21 | CAT | Caterpillar Inc | 0% | — | Unchanged |
| 22 | TRUP | Trupanion Inc | 0% | -4.87% | Trim |
| 23 | XT | Ishar Fture Exp Tech Etf-usd | 0% | — | Unchanged |
| 24 | RTX | Rtx CORP | 0% | — | Unchanged |
| 25 | UBER | Uber Technologies Inc | 0% | -2.00% | Trim |
| 26 | AMGN | Amgen Inc | 0% | +2.37% | Add |
| 27 | GLW | Corning Inc | — | — | Unchanged |
| 28 | ✓ | — | +1.42% | Add | |
| 29 | ✓ | — | — | Unchanged | |
| 30 | AMZN | Amazon.com Inc | — | — | Add |
| 31 | ✓ | — | — | Unchanged | |
| 32 | BAM | Brookfield Asset Mgmt-a | — | — | Unchanged |
| 33 | FAST | Fastenal Co | — | — | Add |
| 34 | ✓ | — | +0.10% | Add | |
| 35 | SCHG | Schwab US Large-cap Growth | — | — | Unchanged |
| 36 | BA | Boeing Co/the | — | — | Unchanged |
| 37 | ✓ | — | -10.60% | Trim | |
| 38 | ✓ | — | — | Unchanged | |
| 39 | ✓ | — | — | Unchanged | |
| 40 | WFC | Wells Fargo & Co | — | — | Trim |
| 41 | CVX | Chevron CORP | — | — | Unchanged |
| 42 | LKQ | Lkq CORP | -0.4% | +0.07% | Trim |
| 43 | KMX | Carmax Inc | -0.5% | +0.18% | Trim |
| 44 | BRK-B | Berkshire Hathaway Inc-cl B | -5.9% | -1.70% | Trim |
| 45 | SU | Suncor Energy Inc | — | EXIT | Sold out |
| 46 | ✓ | — | NEW | New buy | |
| 47 | ✓ | — | NEW | New buy | |
| 48 | PG | Procter & Gamble Co/the | — | EXIT | Sold out |
| 49 | CFG | Citizens Financial Group | — | NEW | New buy |
| 50 | CDLXEUR | Cardlytics Inc | — | EXIT | Sold out |
According to official SEC Form 13F filings, Check Capital Management Inc/ca reported a total U.S. public equity portfolio value of $3.7B across 50 disclosed positions in Q3 2025.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including BRK-B, BN, ) accounted for 69.9% of total reported equity market value during Q3 2025.
Top New Position Initiated
市值: $246.9K
Top Position Liquidated / Trimmed
SU
前期市值: $65.5M
During Q3 2025, Check Capital Management Inc/ca's top holdings by market value included BRK-B (65.8%)、BN (6.6%)、 (5.7%). The largest single position, BRK-B, represented 65.8% of total portfolio value.
In Q3 2025, Check Capital Management Inc/ca made 35 total portfolio adjustments, initiating 3 new buys, adding to 12 positions, trimming 17 holdings, and fully liquidating 3 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
Understand SEC Form 4 insider disclosures for corporate officers, directors, and 10% owners to track executive transactions.
Understand Rule 144 restricted stock sale notices to spot planned insider liquidations before market sell pressure arrives.
Explore the 5% beneficial ownership threshold, 13D vs 13G filing differences, and recent SEC accelerated deadline rules.
Best practices for analyzing 13F quarterly changes without getting misled by stock splits, options, or market valuation drift.
Learn how AlphaSMO's flagship signal detects high-conviction stocks where 13F hedge funds and corporate insiders buy at the same time.