Westchester Capital Management, Inc. holds a focused book of 46 stocks worth $555.4M as of Q2 2026 (disclosed Jul 23, 2026, a ~45-day 13F lag). This quarter they opened SS SPDR S&P 500 ETF Trust-US and trimmed Caterpillar Inc. Their largest long position is Caterpillar Inc at 11% of the equity book. Cloning the disclosed picks since 2024 would be +43% (+23.0%/yr). That is a simulation of the disclosed long book, not audited returns.
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curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1390063/holdings"
Use Arkolith to show Westchester Capital Management, Inc.'s latest holdings, largest changes, and filing provenance.
Following at the filing date actually beat the quarter-end book by 5.5 points over this window.
Growth of $10,000 cloning Westchester Capital Management, Inc.'s disclosed long 13F book, rebalanced on each filing date (so it reflects the ~45-day reporting lag, no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
99% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Westchester Capital Management, Inc.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| VANGUARD GROUP INC | 49 / 46 | $2.6T |
| BlackRock, Inc. | 49 / 46 | $2.1T |
| FMR LLC | 49 / 46 | $705.8B |
| MORGAN STANLEY | 49 / 46 | $520.2B |
| JPMORGAN CHASE & CO | 49 / 46 | $515.9B |
| BANK OF AMERICA CORP /DE/ | 49 / 46 | $326.4B |
| NORTHERN TRUST CORP | 49 / 46 | $289.1B |
| GOLDMAN SACHS GROUP INC | 49 / 46 | $242.1B |
Ranked by how many of Westchester Capital Management, Inc.'s top 46 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Caterpillar, Inc. common stock | $59.4M | 55.8K | 10.7% | ▼−5.2% Reduced · −3K sh | |
| 2 | Apple, Inc. common stock | $44.2M | 152.6K | 8.0% | ▼−2.6% Reduced · −4K sh | |
| 3 | Alphabet, Inc. Class A - Formerly Google A common stock | $36.7M | 102.6K | 6.6% | ▼−0.9% Reduced · −964 sh | |
| 4 | Berkshire Hathaway Class B common stock | $28.7M | 57.4K | 5.2% | ▲+0.2% Added · +123 sh | |
| 5 | Cisco Systems, Inc. common stock | $28.3M | 240.6K | 5.1% | ▼−4.3% Reduced · −11K sh | |
| 6 | Wal-Mart, Inc. common stock | $27.8M | 245.5K | 5.0% | ▼−2.3% Reduced · −6K sh | |
| 7 | Microsoft Corporation common stock | $27.2M | 72.9K | 4.9% | ▼−1.1% Reduced · −778 sh | |
| 8 | JP Morgan Chase common stock | $26.9M | 82.1K | 4.8% | ▼−1.6% Reduced · −1K sh | |
| 9 | AbbVie, Inc. common stock | $25.8M | 102.6K | 4.7% | ▼−1.0% Reduced · −1K sh | |
| 10 | The Bank of New York Mellon Corporation common stock | $25.5M | 176.3K | 4.6% | ▼−4.6% Reduced · −8K sh | |
| 11 | Intel Corporation common stock | $25.2M | 180.4K | 4.5% | ▼−4.8% Reduced · −9K sh | |
| 12 | Valero Energy Corporation common stock | $21.7M | 83.3K | 3.9% | ▼−2.8% Reduced · −2K sh | |
| 13 | Waste Management, Inc. common stock | $19.7M | 88.6K | 3.6% | ▼−1.9% Reduced · −2K sh | |
| 14 | Microchip Technology, Inc. common stock | $18.0M | 197.6K | 3.2% | ▼−1.7% Reduced · −3K sh | |
| 15 | Exxon Mobil Corporation common stock | $16.2M | 118.3K | 2.9% | ▼−1.9% Reduced · −2K sh | |
| 16 | Lockheed Martin Corporation common stock | $16.1M | 31.6K | 2.9% | ▼−2.0% Reduced · −637 sh | |
| 17 | Johnson & Johnson common stock | $15.2M | 59.7K | 2.7% | ▼−1.6% Reduced · −978 sh | |
| 18 | McDonald's Corporation common stock | $15.1M | 55.7K | 2.7% | ▲+7.9% Added · +4K sh | |
| 19 | Home Depot, Inc. common stock | $13.7M | 38.8K | 2.5% | ▼−0.8% Reduced · −305 sh | |
| 20 | Amazon.Com, Inc. common stock | $10.2M | 42.8K | 1.8% | ▲+1.0% Added · +423 sh | |
| 21 | Medtronic PLC common stock | $7.8M | 99.2K | 1.4% | ▼−2.1% Reduced · −2K sh | |
| 22 | Salesforce.com Inc common stock | $7.4M | 47.0K | 1.3% | ▲+1.8% Added · +820 sh | |
| 23 | Becton Dickinson & Company common stock | $7.0M | 46.5K | 1.3% | ▼−1.7% Reduced · −800 sh | |
| 24 | Pfizer, Inc. common stock | $6.7M | 276.3K | 1.2% | ▼−1.9% Reduced · −5K sh | |
| 25 | Walt Disney Company common stock | $4.3M | 44.7K | 0.8% | ▼−3.1% Reduced · −1K sh | |
| 26 | Meta Platforms, Inc. common stock | $3.6M | 6.3K | 0.6% | ▲+759% Added · +6K sh | |
| 27 | AT&T common stock | $2.5M | 119.0K | 0.4% | ▼−2.3% Reduced · −3K sh | |
| 28 | Nvidia Corporation common stock | $2.2M | 11.2K | 0.4% | —Held | |
| 29 | Boeing Company common stock | $2.2M | 10.4K | 0.4% | —Held | |
| 30 | iShares Core S&P 500 ETF common stock | $2.2M | 2.9K | 0.4% | —Held | |
| 31 | Pepsico, Inc. common stock | $2.1M | 15.5K | 0.4% | ▲+6.5% Added · +941 sh | |
| 32 | Waters Corporation common stock | $2.0M | 5.2K | 0.4% | ▼−15% Reduced · −956 sh | |
| 33 | Lowe's Companies, Inc. common stock | $842K | 3.8K | 0.2% | ▼−3.5% Reduced · −140 sh | |
| 34 | Conagra Brands Inc. common stock | $710K | 52.8K | 0.1% | ▼−1.2% Reduced · −633 sh | |
| 35 | State Street SPDR S&P 500 ETF Trust common stock | $405K | 543 | 0.1% | ▲New New position | |
| 36 | Vanguard S&P 500 ETF common stock | $353K | 514 | 0.1% | ▼−5.3% Reduced · −29 sh | |
| 37 | iShares Total US Stock Market ETF common stock | $314K | 1.9K | 0.1% | —Held | |
| 38 | Verizon Communications common stock | $293K | 6.9K | 0.1% | —Held | |
| 39 | American Express Company common stock | $223K | 660 | 0.0% | —Held | |
| 40 | Vanguard Total Bond Market ETF common stock | $219K | 3.0K | 0.0% | —Held | |
| 41 | Alphabet, Inc. Class C - Formerly Google C common stock | $191K | 540 | 0.0% | —Held | |
| 42 | Chevron Corporation common stock | $167K | 1.0K | 0.0% | —Held | |
| 43 | Vanguard Short Term Corp Bond Index ETF common stock | $136K | 1.7K | 0.0% | —Held | |
| 44 | Vanguard Short Term Treasury Index ETF common stock | $134K | 2.3K | 0.0% | —Held | |
| 45 | Coca Cola Company common stock | $118K | 1.4K | 0.0% | —Held | |
| 46 | Bank of America Corp. common stock | $17K | 300 | 0.0% | —Held |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 23, 2026 | 46 | $555.4M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 6, 2026 | 45 | $496.5M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 43 | $483.7M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 7, 2025 | 43 | $465.2M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 25, 2025 | 39 | $425.0M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 9, 2025 | 39 | $402.2M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 10, 2025 | 41 | $397.6M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 1, 2024 | 41 | $411.7M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.