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13D Management LLC

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13F filer, CIK 1600133, New York, NY

13D Management LLC reported $109,613,737 across 20 holdings for the quarter ended 2025-06-30, in a 13F-HR filed 2025-08-14. Its ten largest share positions make up 61.59% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-25-003316

Period
2025-06-30
Reported value
$110M
Holdings
20
Top 10 weight
61.59%
New
1
Sold out
2

Largest buys vs the previous quarter

SecurityShares changeApprox. value
CRLnew+28,000$4.25M
QRVOadded+14,266$1.21M
KVUEadded+48,569$1.02M

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
NSITexited-49,043-$7.36M
MRCYreduced-65,689-$3.54M
RPDexited-124,365-$3.3M
TWLOreduced-1,785-$222K
SWXreduced-2,813-$209K

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, Q2 2025

Share positions as resolved from 13F-HR 0001172661-25-003316, largest first. % of portfolio is the value over $109,613,737, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
TWLOTWILIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 98,893 shares; 2024Q4: 90,757 shares; 2025Q1: 62,540 shares; 2025Q2: 60,755 shares 60,755$7.56M6.89%-1,785Timeline
QRVOQORVO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 74,474 shares; 2025Q2: 88,740 shares 88,740$7.53M6.87%+14,266Timeline
MRCYMERCURY SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 131,508 shares; 2024Q4: 221,015 shares; 2025Q1: 202,701 shares; 2025Q2: 137,012 shares 137,012$7.38M6.73%-65,689Timeline
SWXSOUTHWEST GAS HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 131,831 shares; 2024Q4: 132,109 shares; 2025Q1: 99,611 shares; 2025Q2: 96,798 shares 96,798$7.2M6.57%-2,813Timeline
PSOPEARSON PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 512,732 shares; 2024Q4: 513,759 shares; 2025Q1: 471,167 shares; 2025Q2: 458,338 shares 458,338$6.84M6.24%-12,829Timeline
APDAIR PRODUCTS AND CHEMICALS IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 17,450 shares; 2025Q1: 24,603 shares; 2025Q2: 23,900 shares 23,900$6.74M6.15%-703Timeline
ABGASBURY AUTOMOTIVE GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 30,302 shares; 2024Q4: 30,361 shares; 2025Q1: 27,844 shares; 2025Q2: 27,087 shares 27,087$6.46M5.89%-757Timeline
EXELEXELIXIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 360,575 shares; 2024Q4: 228,610 shares; 2025Q1: 147,506 shares; 2025Q2: 143,335 shares 143,335$6.32M5.76%-4,171Timeline
ALVAUTOLIV INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 54,047 shares; 2024Q4: 62,589 shares; 2025Q1: 57,400 shares; 2025Q2: 55,839 shares 55,839$6.25M5.7%-1,561Timeline
JHGJANUS HENDERSON GROUP PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 187,513 shares; 2024Q4: 150,953 shares; 2025Q1: 138,440 shares; 2025Q2: 134,654 shares 134,654$5.23M4.77%-3,786Timeline
YETIYETI HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 168,559 shares; 2025Q2: 164,000 shares 164,000$5.17M4.72%-4,559Timeline
RIOTRIOT PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 508,500 shares; 2025Q1: 466,366 shares; 2025Q2: 453,272 shares 453,272$5.12M4.67%-13,094Timeline
KVUEKENVUE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 186,740 shares; 2025Q2: 235,309 shares 235,309$4.93M4.49%+48,569Timeline
CRLCHARLES RIV LABS INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 28,000 shares 28,000$4.25M3.88%newTimeline
LWLAMB WESTON HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 90,294 shares; 2025Q1: 82,807 shares; 2025Q2: 80,582 shares 80,582$4.18M3.81%-2,225Timeline
MTCHMATCH GROUP INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 148,638 shares; 2024Q4: 148,828 shares; 2025Q1: 136,489 shares; 2025Q2: 132,779 shares 132,779$4.1M3.74%-3,710Timeline
ETSYETSY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 87,817 shares; 2024Q4: 87,258 shares; 2025Q1: 80,025 shares; 2025Q2: 77,836 shares 77,836$3.9M3.56%-2,189Timeline
MIDDMIDDLEBY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 26,873 shares; 2025Q2: 26,097 shares 26,097$3.76M3.43%-776Timeline
PENNPENN ENTERTAINMENT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 218,846 shares; 2024Q4: 218,654 shares; 2025Q1: 200,528 shares; 2025Q2: 195,045 shares 195,045$3.49M3.18%-5,483Timeline
VSTSVESTIS CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 554,826 shares; 2024Q4: 627,787 shares; 2025Q1: 575,737 shares; 2025Q2: 560,134 shares 560,134$3.21M2.93%-15,603Timeline

Sold out in Q2 2025

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

SecurityShares beforeValue beforeType
NSITINSIGHT ENTERPRISES INC49,043$7.36Mshares
RPDRAPID7 INC124,365$3.3Mshares

How Q2 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 0001172661-25-003316 base2025-08-14acceptance time not in the bulk data set