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13D Management LLC

13F filer · CIK 0001600133
Reported Aug 14, 2026
Net seller this quarter
13F portfolio value$71.3MU.S. long equity reported on 13F
Positions111 new · 3 closed
Net flow last quarter-$17.6MBuys minus sells
Top 10 positions weight94.4%Concentration

Holdings

13F · last 4 quarters free
Scroll for earlier quarters
CompanyValue% of portfolio% of companyPOSITION CHANGE qoq %First reported
Q2 2026Reported Aug 14, 202611 positions
VSATViasat Inc$11.3M15.89%0.09%-23.4%Q3 2025
TWLOTwilio Inc$8.05M11.28%0.03%-35.8%Q2 2024
MRCYMercury Systems Inc$7.4M10.37%0.10%Not reportedQ1 2022
PSOPearson PLC$7.28M10.21%0.07%Not reportedQ2 2020
ALVAutoliv Inc$6.49M9.09%0.07%Not reportedQ1 2018
CRLCharles River Laboratories International, Inc.$5.85M8.20%0.05%Not reportedQ2 2025
SNPSSynopsys Inc$5.64M7.91%0.01%NewQ2 2026
EXELExelixis, Inc.$5.51M7.73%0.04%Not reportedQ2 2023
ETSYEtsy Inc$5.41M7.59%0.08%Not reportedQ1 2024
ITGRInteger Holdings Corp$4.39M6.16%0.14%Not reportedQ4 2025
FUNSix Flags Entertainment Corporation$3.97M5.57%0.18%Not reportedQ4 2025
Q1 2026Reported May 15, 202613 positions
TWLOTwilio Inc$7.64M11.85%0.04%Not reportedQ2 2024
VSATViasat Inc$7.55M11.70%0.12%-18.3%Q3 2025
ACHCAcadia Healthcare Company, Inc.$6.88M10.66%0.32%NewQ1 2026
PSOPearson PLC$6.02M9.33%0.07%Not reportedQ2 2020
ALVAutoliv Inc$5.87M9.10%0.07%Not reportedQ1 2018
CRLCharles River Laboratories International, Inc.$4.45M6.90%0.05%-7.9%Q2 2025
MRCYMercury Systems Inc$4.41M6.83%0.10%-41.7%Q1 2022
EXELExelixis, Inc.$4.35M6.74%0.04%-15.8%Q2 2023
ITGRInteger Holdings Corp$4.14M6.41%0.14%Not reportedQ4 2025
ETSYEtsy Inc$3.59M5.57%0.08%Not reportedQ1 2024
FUNSix Flags Entertainment Corporation$3.31M5.13%0.18%Not reportedQ4 2025
TRIPTripAdvisor, Inc.$3.2M4.96%0.26%Not reportedQ3 2025
WKWorkiva Inc$3.1M4.81%Not reportedNot reportedQ4 2025
Q4 2025Reported Feb 17, 202616 positions
TWLOTwilio Inc$8.64M10.28%0.04%Not reportedQ2 2024
MRCYMercury Systems Inc$7.58M9.01%0.17%-24.3%Q1 2022
VSATViasat Inc$6.95M8.27%0.15%-24.4%Q3 2025
ALVAutoliv Inc$6.63M7.89%0.07%Not reportedQ1 2018
PSOPearson PLC$6.44M7.66%0.07%Not reportedQ2 2020
CRLCharles River Laboratories International, Inc.$5.59M6.65%0.06%Not reportedQ2 2025
EXELExelixis, Inc.$5.27M6.28%0.04%Not reportedQ2 2023
SWXSouthwest Gas Holdings, Inc.$5.11M6.07%0.09%Not reportedQ3 2022
BILLBILL Holdings, Inc.$4.91M5.84%0.09%Not reportedQ3 2025
WKWorkiva Inc$4.49M5.34%Not reportedNewQ4 2025
WEXWEX Inc.$4.37M5.20%0.09%NewQ4 2025
TRIPTripAdvisor, Inc.$4.37M5.20%0.26%Not reportedQ3 2025
ETSYEtsy Inc$3.98M4.74%0.07%-7.7%Q1 2024
ITGRInteger Holdings Corp$3.69M4.39%0.14%NewQ4 2025
LWLamb Weston Holdings, Inc.$3.18M3.79%0.05%Not reportedQ4 2016
FUNSix Flags Entertainment Corporation$2.86M3.40%0.18%NewQ4 2025
Q3 2025Reported Nov 14, 202517 positions
MRCYMercury Systems Inc$10.6M10.17%0.23%Not reportedQ1 2022
QRVOQorvo, Inc.$8.08M7.75%0.10%Not reportedQ1 2025
VSATViasat Inc$7.82M7.50%0.20%NewQ3 2025
ALVAutoliv Inc$6.9M6.61%0.07%Not reportedQ1 2018
PSOPearson PLC$6.49M6.22%0.07%Not reportedQ2 2020
TWLOTwilio Inc$6.08M5.83%0.04%Not reportedQ2 2024
ABGAsbury Automotive Group Inc$5.22M5.00%0.11%-21.2%Q3 2021
ETSYEtsy Inc$5.17M4.95%0.08%Not reportedQ1 2024
SWXSouthwest Gas Holdings, Inc.$5M4.79%0.09%-34.1%Q3 2022
EXELExelixis, Inc.$4.97M4.76%0.04%-16.1%Q2 2023
TRIPTripAdvisor, Inc.$4.88M4.68%0.26%NewQ3 2025
BILLBILL Holdings, Inc.$4.77M4.57%0.09%NewQ3 2025
MTCHMatch Group, Inc.$4.69M4.50%0.06%Not reportedQ2 2024
PFGCPerformance Food Group Co$4.47M4.29%0.03%NewQ3 2025
LWLamb Weston Holdings, Inc.$4.41M4.23%0.05%-5.7%Q4 2016
CRLCharles River Laboratories International, Inc.$4.38M4.20%0.06%Not reportedQ2 2025
YETIYETI Holdings, Inc.$4.38M4.20%0.17%-19.5%Q1 2025
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