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Westport Asset Management Inc.

CIK 811454 · latest 13F filed 11 August 2026 · Read the filing on EDGAR

Westport Asset Management Inc. reported 80 US-listed holdings worth $244.9 million in its 13F for the quarter ended 30 June 2026, filed 11 August 2026. Its largest: Synopsys Inc. (9.4%), Willis Towers Watson plc (7.4%) and Covista Inc. (6.4%). Against the quarter before, it opened 2 positions, added to 3, trimmed 1 and sold out of 0.

Reported holdings$244.9M+8.1% on Q1 2026
Positions80+2 on Q1 2026
The largest ten50.1%of its reported holdings
Latest 13FQ2 2026filed 11 August 2026
Where the money is
Held
SNPS9.4%WTW7.4%CVSA6.4%MTG5.1%UHS3.9%IPGP3.7%URI3.7%ZBRA3.7%GOOG3.5%LITE3.3%DRI2.9%EEM2.8%ORCL2.3%Coherent2.2%66 more39.7%

The 14 largest of its 80 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.

Reported holdings, quarter by quarter
Q3 2024: $213.3 million in 74 positions$213MQ3 24Q4 2024: $209.0 million in 74 positions$209MQ4 24Q1 2025: $206.2 million in 74 positions$206MQ1 25Q2 2025: $226.3 million in 76 positions$226MQ2 25Q3 2025: $239.8 million in 75 positions$240MQ3 25Q4 2025: $239.7 million in 75 positions$240MQ4 25Q1 2026: $226.5 million in 78 positions$226MQ1 26Q2 2026: $244.9 million in 80 positions$245MQ2 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What its reported holdings returned

Held through each quarter, the holdings it reported returned +8.2% over the 7 quarters to 30 June 2026, against +30.2% for the S&P 500.

Its reported holdingsThe S&P 500
90100110120130Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Its holdings +8.2%S&P 500 +30.2%

Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.

What it did on the quarter

Opened 2Added 3Held 74Trimmed 1
Opened: 2Added: 3Held: 74Trimmed: 1

Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held

Opened 2

  1. Honeywell International Inc. HON$167,925
  2. Honeywell Aerospace Inc. HONA$165,810

Added to 3

  1. Zscaler, Inc. ZS+3,000 shares · +67%
  2. Zoetis Inc. ZTS+2,000 shares · +100%
  3. Cognyte Software Ltd CGNT+10,000 shares · +22%

Trimmed 1

  1. Everus Construction Group, Inc. ECG-1,000 shares · -27%

What it holds

CompanySharesValueOf its bookChange in shares
Synopsys Inc. SNPS51.7K$23.1 million9.41%no change
Willis Towers Watson plc WTW69.2K$18.1 million7.39%no change
Covista Inc. CVSA125.8K$15.7 million6.40%no change
Mgic Investment Corp. MTG439.0K$12.4 million5.06%no change
Universal Health Services Inc. UHS65.1K$9.7 million3.95%no change
IPG Photonics Corp. IPGP77.5K$9.1 million3.71%no change
United Rentals, Inc. URI8.0K$9.1 million3.70%no change
Zebra Technologies Corp. ZBRA34.3K$9.0 million3.69%no change
Alphabet Inc. GOOG24.0K$8.5 million3.46%no change
Lumentum Holdings Inc. LITE9.5K$8.2 million3.33%no change
Darden Restaurants Inc. DRI35.0K$7.2 million2.94%no change
iShares Trust EEM100.0K$6.8 million2.79%no change
Oracle Corp. ORCL38.0K$5.6 million2.27%no change
Coherent Inc.13.5K$5.3 million2.17%no change
EOG Resources Inc. EOG38.9K$5.0 million2.06%no change
Radian Group Inc. RDN130.4K$4.9 million2.01%no change
Linde PLC9.0K$4.7 million1.91%no change
Uber Technologies, Inc. UBER62.6K$4.5 million1.84%no change
Rockwell Automation, Inc. ROK9.0K$4.5 million1.82%no change
Check Point Software Technologies Ltd. CHKP32.3K$4.2 million1.73%no change
Carrier Global Corp. CARR52.4K$3.8 million1.57%no change
Timberland Bancorp Inc. TSBK80.9K$3.6 million1.48%no change
ROSS Stores, Inc. ROST17.0K$3.6 million1.48%no change
PTC Inc. PTC31.1K$3.5 million1.44%no change
Rogers Corp. ROG20.5K$3.3 million1.37%no change
Akamai Technologies Inc. AKAM27.7K$3.3 million1.34%no change
Ryman Hospitality Properties, Inc. RHP25.0K$3.2 million1.31%no change
Republic Services, Inc. RSG15.0K$3.2 million1.31%no change
International Business Machines Corp. IBM10.0K$2.8 million1.15%no change
Union Pacific Corp. UNP8.8K$2.4 million0.98%no change
Caci International Inc. CACI5.0K$2.3 million0.95%no change
Vertiv Holdings Co. VRT6.0K$2.0 million0.82%no change
Norfolk Southern Corp. NSC6.0K$1.9 million0.77%no change
Warner Bros Discovery Inc. WBD69.8K$1.9 million0.76%no change
CVS Health Corp. CVS17.8K$1.8 million0.75%no change
Eagle Materials Inc. EXP8.0K$1.8 million0.73%no change
Texas Instruments Inc. TXN6.0K$1.8 million0.73%no change
Verisk Analytics, Inc. VRSK8.5K$1.5 million0.62%no change
AstraZeneca PLC AZN7.5K$1.4 million0.58%no change
Gilead Sciences, Inc. GILD10.0K$1.3 million0.52%no change
Vertex Pharmaceuticals Inc. VRTX2.5K$1.2 million0.51%no change
S&P Global Inc. SPGI3.0K$1.2 million0.47%no change
Charter Communications, Inc. CHTR7.6K$1.1 million0.44%no change
Zscaler, Inc. ZS7.5K$1.1 million0.43%+3.0K
Amazon.com Inc. AMZN3.7K$886,6250.36%no change
Bio-Rad Laboratories, Inc. BIO3.0K$880,8300.36%no change
Waters Corp. WAT2.3K$876,8440.36%no change
Electronic Arts Inc EA4.0K$820,1600.33%no change
RTX Corp. RTX4.1K$783,0160.32%no change
MDU Resources Group Inc. MDU35.0K$742,3500.30%no change
Air Products & Chemicals, Inc. APD2.5K$732,9500.30%no change
AT&T Inc. T31.9K$660,7230.27%no change
Archer-Daniels-Midland Co. ADM7.5K$573,0000.23%no change
Newmont Corp. NEM5.5K$514,1670.21%no change
Broadcom Inc. AVGO1.3K$495,6080.20%no change
Four Corners Property Trust, Inc. FCPT20.0K$490,9510.20%no change
Cognyte Software Ltd CGNT55.0K$482,9000.20%+10.0K
Everus Construction Group, Inc. ECG2.8K$456,3630.19%-1.0K
Amphenol Corp. APH2.5K$440,8000.18%no change
Occidental Petroleum Corp. OXY8.1K$395,1170.16%no change
Becton Dickinson & Co. BDX2.5K$378,3250.15%no change
Jacobs Solutions Inc. J3.0K$378,0000.15%no change
Abbott Laboratories ABT4.0K$362,9600.15%no change
Omnicom Group Inc. OMC4.8K$350,7490.14%no change
Zoetis Inc. ZTS4.0K$287,4400.12%+2.0K
Teradata Corp. TDC7.5K$259,8750.11%no change
Canadian Pacific Railway Ltd2.9K$249,8990.10%no change
Elanco Animal Health Inc. ELAN10.0K$246,1000.10%no change
SentinelOne, Inc. S12.5K$212,1250.09%no change
CrowdStrike Holdings, Inc. CRWD1.0K$190,7850.08%no change
Tenet Healthcare Corp. THC1.0K$187,0800.08%no change
FMC Corp. FMC15.0K$172,5000.07%no change
Graham Holdings Co. GHC150$171,2130.07%no change
Honeywell International Inc. HON750$167,9250.07%new
Honeywell Aerospace Inc. HONA750$165,8100.07%new
Vodafone Group Public Limited Company VOD9.0K$118,8800.05%no change
Halliburton Co. HAL3.4K$116,9240.05%no change
Verizon Communications Inc. VZ862$36,4970.01%no change
Cable One Inc. CABO150$7,9670.00%no change
Lee Enterprises Inc540$4,8380.00%no change
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before.