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13D Management LLC

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13F filer, CIK 1600133, New York, NY

13D Management LLC reported $104,305,554 across 18 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-14. Its ten largest share positions make up 64.57% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-25-004791

Period
2025-09-30
Reported value
$104M
Holdings
18
Top 10 weight
64.57%
New
4
Sold out
6

Largest buys vs the previous quarter

SecurityShares changeApprox. value
VSATnew+267,000$7.82M
TRIPnew+300,000$4.88M
BILLnew+90,000$4.77M
PFGCnew+43,000$4.47M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
APDexited-23,900-$6.74M
RIOTexited-453,272-$5.12M
KVUEexited-235,309-$4.93M
MIDDexited-26,097-$3.76M
PENNexited-195,045-$3.49M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2025

Share positions as resolved from 13F-HR 0001172661-25-004791, largest first. % of portfolio is the value over $104,305,554, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
MRCYMERCURY SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 131,508 shares; 2024Q4: 221,015 shares; 2025Q1: 202,701 shares; 2025Q2: 137,012 shares; 2025Q3: 137,012 shares 137,012$10.6M10.17%0Timeline
QRVOQORVO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 74,474 shares; 2025Q2: 88,740 shares; 2025Q3: 88,740 shares 88,740$8.08M7.75%0Timeline
VSATVIASAT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 267,000 shares 267,000$7.82M7.5%newTimeline
ALVAUTOLIV INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 54,047 shares; 2024Q4: 62,589 shares; 2025Q1: 57,400 shares; 2025Q2: 55,839 shares; 2025Q3: 55,839 shares 55,839$6.9M6.61%0Timeline
PSOPEARSON PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 512,732 shares; 2024Q4: 513,759 shares; 2025Q1: 471,167 shares; 2025Q2: 458,338 shares; 2025Q3: 458,338 shares 458,338$6.49M6.22%0Timeline
TWLOTWILIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 98,893 shares; 2024Q4: 90,757 shares; 2025Q1: 62,540 shares; 2025Q2: 60,755 shares; 2025Q3: 60,755 shares 60,755$6.08M5.83%0Timeline
JHGJANUS HENDERSON GROUP PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 187,513 shares; 2024Q4: 150,953 shares; 2025Q1: 138,440 shares; 2025Q2: 134,654 shares; 2025Q3: 134,654 shares 134,654$5.99M5.75%0Timeline
ABGASBURY AUTOMOTIVE GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 30,302 shares; 2024Q4: 30,361 shares; 2025Q1: 27,844 shares; 2025Q2: 27,087 shares; 2025Q3: 21,337 shares 21,337$5.22M5%-5,750Timeline
ETSYETSY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 87,817 shares; 2024Q4: 87,258 shares; 2025Q1: 80,025 shares; 2025Q2: 77,836 shares; 2025Q3: 77,836 shares 77,836$5.17M4.95%0Timeline
SWXSOUTHWEST GAS HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 131,831 shares; 2024Q4: 132,109 shares; 2025Q1: 99,611 shares; 2025Q2: 96,798 shares; 2025Q3: 63,798 shares 63,798$5M4.79%-33,000Timeline
EXELEXELIXIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 360,575 shares; 2024Q4: 228,610 shares; 2025Q1: 147,506 shares; 2025Q2: 143,335 shares; 2025Q3: 120,335 shares 120,335$4.97M4.76%-23,000Timeline
TRIPTRIPADVISOR INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 300,000 shares 300,000$4.88M4.68%newTimeline
BILLBILL HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 90,000 shares 90,000$4.77M4.57%newTimeline
MTCHMATCH GROUP INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 148,638 shares; 2024Q4: 148,828 shares; 2025Q1: 136,489 shares; 2025Q2: 132,779 shares; 2025Q3: 132,779 shares 132,779$4.69M4.5%0Timeline
PFGCPERFORMANCE FOOD GROUP COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 43,000 shares 43,000$4.47M4.29%newTimeline
LWLAMB WESTON HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 90,294 shares; 2025Q1: 82,807 shares; 2025Q2: 80,582 shares; 2025Q3: 76,001 shares 76,001$4.41M4.23%-4,581Timeline
CRLCHARLES RIV LABS INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 28,000 shares; 2025Q3: 28,000 shares 28,000$4.38M4.2%0Timeline
YETIYETI HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 168,559 shares; 2025Q2: 164,000 shares; 2025Q3: 132,000 shares 132,000$4.38M4.2%-32,000Timeline

Sold out in Q3 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
APDAIR PRODUCTS AND CHEMICALS I23,900$6.74Mshares
RIOTRIOT PLATFORMS INC453,272$5.12Mshares
KVUEKENVUE INC235,309$4.93Mshares
MIDDMIDDLEBY CORP26,097$3.76Mshares
PENNPENN ENTERTAINMENT INC195,045$3.49Mshares
VSTSVESTIS CORPORATION560,134$3.21Mshares

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-25-004791 base2025-11-14acceptance time not in the bulk data set