Westport Asset Management Inc holds a focused book of 78 stocks worth $226.5M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Covista Inc and trimmed Warner Bros Discovery Inc. Their largest long position is Synopsys Inc at 9% of the equity book.
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curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/811454/holdings"
Use Arkolith to show WESTPORT ASSET MANAGEMENT INC's latest holdings, largest changes, and filing provenance.
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.
93% 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 Westport Asset Management Inc
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 73 / 78 | $727.1B |
| FMR LLC | 73 / 78 | $210.2B |
| JPMORGAN CHASE & CO | 73 / 78 | $174.2B |
| MORGAN STANLEY | 73 / 78 | $157.5B |
| BANK OF AMERICA CORP /DE/ | 73 / 78 | $100.6B |
| NORTHERN TRUST CORP | 73 / 78 | $92.1B |
| GOLDMAN SACHS GROUP INC | 73 / 78 | $71.4B |
| BARCLAYS PLC | 73 / 78 | $69.5B |
Ranked by how many of Westport Asset Management Inc's top 78 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 | Synopsys Inc COM | $20.5M | 51.7K | 9.0% | —Held | |
| 2 | Willis Towers Watson PLC COM | $20.1M | 69.2K | 8.9% | —Held | |
| 3 | Covista Inc COM | $14.5M | 125.8K | 6.4% | ▲New New position | |
| 4 | Universal Health Services Inc COM | $11.6M | 65.1K | 5.1% | —Held | |
| 5 | MGIC Investment Corp COM | $11.5M | 439.0K | 5.1% | —Held | |
| 6 | IPG Photonics Corp COM | $8.9M | 77.5K | 3.9% | —Held | |
| 7 | Zebra Technologies Corp COM | $7.2M | 34.3K | 3.2% | —Held | |
| 8 | Alphabet Inc COM | $6.9M | 24.0K | 3.0% | —Held | |
| 9 | Darden Restaurants Inc COM | $6.9M | 35.0K | 3.0% | —Held | |
| 10 | Lumentum Holdings Inc COM | $6.7M | 9.5K | 2.9% | —Held | |
| 11 | United Rentals Inc COM | $5.8M | 8.0K | 2.6% | —Held | |
| 12 | iShares MSCI Emerging Markets COM | $5.7M | 100.0K | 2.5% | —Held | |
| 13 | EOG Resources Inc COM | $5.6M | 38.9K | 2.5% | —Held | |
| 14 | Oracle Corp COM | $5.6M | 38.0K | 2.5% | —Held | |
| 15 | Check Point Software Technolog COM | $4.6M | 32.3K | 2.0% | —Held | |
| 16 | Uber Technologies Inc COM | $4.5M | 62.6K | 2.0% | —Held | |
| 17 | Linde PLC COM | $4.5M | 9.0K | 2.0% | —Held | |
| 18 | PTC Inc COM | $4.4M | 31.1K | 2.0% | —Held | |
| 19 | Radian Group Inc COM | $4.3M | 130.4K | 1.9% | —Held | |
| 20 | Ross Stores Inc COM | $3.7M | 17.0K | 1.6% | —Held | |
| 21 | Republic Services Inc COM | $3.3M | 15.0K | 1.5% | —Held | |
| 22 | Rockwell Automation Inc COM | $3.2M | 9.0K | 1.4% | —Held | |
| 23 | Coherent Inc COM | $3.2M | 13.5K | 1.4% | —Held | |
| 24 | Timberland Bancorp Inc COM | $3.2M | 80.9K | 1.4% | —Held | |
| 25 | Akamai Technologies, Inc. COM | $3.2M | 27.7K | 1.4% | —Held | |
| 26 | Carrier Global Corp COM | $3.0M | 52.4K | 1.3% | —Held | |
| 27 | CACI International Inc COM | $2.7M | 5.0K | 1.2% | —Held | |
| 28 | International Business Machine COM | $2.4M | 10.0K | 1.1% | —Held | |
| 29 | Ryman Hospitality Properties I COM | $2.3M | 25.0K | 1.0% | —Held | |
| 30 | Rogers Corp COM | $2.2M | 20.5K | 1.0% | —Held | |
| 31 | Union Pacific Corp COM | $2.1M | 8.8K | 0.9% | —Held | |
| 32 | Warner Bros. Discovery, Inc. COM | $1.9M | 69.8K | 0.8% | ▼−13% Reduced · −10K sh | |
| 33 | Norfolk Southern Corp COM | $1.7M | 6.0K | 0.8% | —Held | |
| 34 | Charter Communications Inc COM | $1.6M | 7.6K | 0.7% | —Held | |
| 35 | Verisk Analytics Inc COM | $1.6M | 8.5K | 0.7% | ▲New New position | |
| 36 | Eagle Materials Inc COM | $1.5M | 8.0K | 0.7% | —Held | |
| 37 | Vertiv Holdings Co. COM | $1.5M | 6.0K | 0.7% | ▼−25% Reduced · −2K sh | |
| 38 | AstraZeneca PLC COM | $1.5M | 7.5K | 0.7% | ▼−50% Reduced · −8K sh | |
| 39 | Gilead Sciences Inc COM | $1.4M | 10.0K | 0.6% | —Held | |
| 40 | CVS Health Corp COM | $1.3M | 17.8K | 0.6% | —Held | |
| 41 | S&P Global Inc COM | $1.3M | 3.0K | 0.6% | ▲New New position | |
| 42 | Texas Instruments Inc COM | $1.2M | 6.0K | 0.5% | —Held | |
| 43 | Vertex Pharmaceuticals Inc COM | $1.1M | 2.5K | 0.5% | —Held | |
| 44 | AT&T Inc COM | $925K | 31.9K | 0.4% | —Held | |
| 45 | Bio-Rad Laboratories Inc COM | $836K | 3.0K | 0.4% | —Held | |
| 46 | Electronic Arts Inc. COM | $815K | 4.0K | 0.4% | —Held | |
| 47 | Raytheon Technologies Corp COM | $796K | 4.1K | 0.4% | —Held | |
| 48 | Amazon.com Inc COM | $775K | 3.7K | 0.3% | —Held | |
| 49 | Air Products & Chemicals Inc COM | $726K | 2.5K | 0.3% | —Held | |
| 50 | MDU Resources Group Inc COM | $725K | 35.0K | 0.3% | —Held |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 78 | $226.5M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 4, 2026 | 75 | $239.7M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 12, 2025 | 75 | $239.8M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 12, 2025 | 76 | $226.3M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 14, 2025 | 74 | $206.2M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 74 | $209.0M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 13, 2024 | 74 | $213.3M | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 12, 2024 | 75 | $199.8M | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 14, 2024 | 73 | $200.3M | 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. Price-derived performance is withheld until the price-source policy and freshness gate are green.