Stocks/Funds/CIK 811454

WESTPORT ASSET MANAGEMENT INC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 811454
Assets
$226M
+9.8% YoY
Holdings
78
Lifetime alpha vs market
-4.19% annual
Average hold time
6.7 yr
median 7.9 yr

Quarterly history

Cum return +28% vs S&P +52% · α -24% lifetimeAUM $226M · peak $240MFlow $-6M (-3%)2016-032017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-1.83%
trims when stocks drop
when a holding falls −10%+
Middle response
-0.60%
baseline attrition
Rally response
-0.53%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
SNPSSynopsys, Inc.$20M9.0%-7.5%9.8 yr
WTWWillis Towers Watson Pub$20M8.9%-13.2%10.0 yr
CVSACovista Inc.$14M6.4%+14.5%0.3 yr
UHSUniversal Health Service$12M5.1%-4.4%10.3 yr
MTGMGIC Investment Corporat$12M5.1%+8.2%10.0 yr
IPGPIPG Photonics Corporatio$9M3.9%+81.5%9.5 yr
ZBRAZebra Technologies Corpo$7M3.2%-26.0%9.5 yr
GOOGAlphabet Inc.$7M3.0%+84.3%6.0 yr
DRIDarden Restaurants, Inc.$7M3.0%-3.5%9.5 yr
LITELumentum Holdings Inc.$7M2.9%+1027.3%7.5 yr
URIUnited Rentals, Inc.$6M2.6%+17.3%10.3 yr
EEMiShares MSCI Emerging Ma$6M2.5%6.3 yr
EOGEOG Resources, Inc.$6M2.5%+16.9%10.3 yr
ORCLOracle Corporation$6M2.5%+5.9%5.3 yr
CHKPCheck Point Software Tec$5M2.0%-37.3%9.5 yr

Portfolio composition (YoY)

Industry mix
Software - Infrastructure15.7%-2.7pp$36M
Insurance - Brokers8.9%-2.5pp$20M
Insurance - Specialty7.0%-0.4pp$16M
Personal Products & Services6.4%$14M
Communication Equipment6.1%+1.1pp$14M
Medical - Care Facilities5.2%-0.8pp$12M
Semiconductors4.6%+1.6pp$10M
Unknown4.0%-5.1pp$9M
Software - Application3.9%-0.9pp$9M
Internet Content & Information3.0%+1.2pp$7M
Country
US84.7%+9.3pp
GB8.9%-2.4pp
Unknown4.0%-5.1pp
IL2.2%-1.5pp
CA0.1%-0.3pp
Top 5: 34.6% · Top 10: 50.7% · Top 25: 79.3%

Winners

TickerPrev $PnLYoY %
LITE$1M+0.01B1027.3%
IPGP$5M+0.00B81.5%
GOOG$4M+0.00B84.3%
ROST$2M+0.00B71.2%
ROK$2M+0.00B41.0%

Losers

TickerPrev $PnLYoY %
WTW$23M-0.00B-13.2%
CHKP$7M-0.00B-37.3%
ZBRA$10M-0.00B-26.0%
SNPS$22M-0.00B-7.5%
UHS$12M-0.00B-4.4%

Top buys this quarter · 6

CVSA Covista Inc.new+$14M
VRSK Verisk Analytics, Inc.new+$2M
SPGI S&P Global Inc.new+$1M
WAT Waters Corporationnew+$1M
ZS Zscaler, Inc.new+$1M
BDX Becton, Dickinson and Companynew+$0M

Top sells this quarter · 6

NTR Nutrien Ltd.exit$1M
VRT Vertiv Holdings Co$1M
WBD Warner Bros. Discovery, Inc.$2M
$1M
exit$0M
SKX Skechers U.S.A., Inc.exit$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$226M78+8.81%+17.59%-8.78%-0.01B
2025-12-31$240M75+8.64%+17.72%-9.08%+0.01B
2025-09-30$240M75+8.02%+17.52%-9.50%+0.00B
2025-06-30$226M76+9.56%+14.94%-5.38%+0.00B
2025-03-31$206M74-0.64%+8.30%-8.94%+0.00B
2024-12-31$209M74+11.29%+24.89%-13.60%+0.00B
2024-09-30$213M74+29.84%+36.04%-6.20%-0.00B
2024-06-30$200M74+14.10%+24.49%-10.39%+0.00B
2024-03-31$200M73+24.31%+29.62%-5.32%+0.00B
2023-12-31$184M72+23.88%+26.18%-2.30%-0.01B
2023-09-30$170M73+18.92%+21.57%-2.65%+0.00B
2023-06-30$178M72+21.83%+19.42%+2.40%-0.00B
2023-03-31$167M70-4.59%-7.82%+3.23%-0.00B
2022-12-31$157M70+8.48%+7.56%+0.92%-0.01B
2022-09-30$158M73-3.59%-4.93%+1.34%-0.00B
2022-06-30$167M73-15.61%-16.11%+0.50%-0.02B