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Sunriver Management LLC

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13F filer, CIK 1663900, GREENWICH, CT

Sunriver Management LLC reported $919,971,744 across 21 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-13. Its ten largest share positions make up 57.64% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001892688-25-000189

Period
2025-09-30
Reported value
$920M
Holdings
21
Top 10 weight
57.64%
New
3
Sold out
5

Largest buys vs the previous quarter

SecurityShares changeApprox. value
SYYnew+556,343$45.8M
IQVnew+229,104$43.5M
SWKadded+425,509$31.6M
CBZnew+596,762$31.6M
BOXadded+359,329$11.6M

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
FISVexited-273,954-$47.2M
FISexited-552,375-$45M
AMPLexited-3,339,327-$41.4M
WTWexited-78,461-$24M
OPLNreduced-775,593-$22.3M

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 0001892688-25-000189, largest first. % of portfolio is the value over $919,971,744, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
INTEGRAL AD SCIENCE HLDNG COINTEGRAL AD SCIENCE HLDNG COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 7,641,466 shares; 2024Q4: 7,291,034 shares; 2025Q1: 8,166,774 shares; 2025Q2: 8,822,914 shares; 2025Q3: 7,120,157 shares 7,120,157$72.4M7.87%-1,702,757
HURNHURON CONSULTING GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 439,629 shares; 2024Q4: 486,597 shares; 2025Q1: 341,908 shares; 2025Q2: 378,211 shares; 2025Q3: 451,985 shares 451,985$66.3M7.21%+73,774Timeline
VRRMVERRA MOBILITY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 1,385,585 shares; 2025Q1: 1,920,395 shares; 2025Q2: 2,064,798 shares; 2025Q3: 2,284,774 shares 2,284,774$56.4M6.13%+219,976Timeline
RTORENTOKIL INITIAL PLCQuarterly 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: 954,773 shares; 2025Q2: 2,057,126 shares; 2025Q3: 1,985,245 shares 1,985,245$50.1M5.45%-71,881Timeline
BOXBOX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,571,978 shares; 2024Q4: 949,452 shares; 2025Q1: 1,546,862 shares; 2025Q2: 1,158,499 shares; 2025Q3: 1,517,828 shares 1,517,828$49M5.32%+359,329Timeline
WEXWEX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 264,533 shares; 2024Q4: 178,579 shares; 2025Q1: 314,069 shares; 2025Q2: 340,956 shares; 2025Q3: 308,081 shares 308,081$48.5M5.28%-32,875Timeline
NABLN-ABLE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,806,020 shares; 2024Q4: 3,562,302 shares; 2025Q1: 4,580,663 shares; 2025Q2: 6,398,641 shares; 2025Q3: 6,211,878 shares 6,211,878$48.5M5.27%-186,763Timeline
PFGCPERFORMANCE FOOD GROUP COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 931,885 shares; 2024Q4: 911,692 shares; 2025Q1: 727,716 shares; 2025Q2: 655,400 shares; 2025Q3: 463,141 shares 463,141$48.2M5.24%-192,259Timeline
SYYSYSCO CORPQuarterly 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: 260,434 shares; 2025Q2: not reported; 2025Q3: 556,343 shares 556,343$45.8M4.98%newTimeline
SSNCSS&C TECH HLDGSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 624,955 shares; 2024Q4: 536,237 shares; 2025Q1: not reported; 2025Q2: 484,343 shares; 2025Q3: 507,017 shares 507,017$45M4.89%+22,674Timeline
HIIHUNTINGTON INGALLS INDS 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: 130,590 shares; 2025Q3: 155,407 shares 155,407$44.7M4.86%+24,817Timeline
IQVIQVIA 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: not reported; 2025Q2: not reported; 2025Q3: 229,104 shares 229,104$43.5M4.73%newTimeline
OPLNOPENLANE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,341,764 shares; 2024Q4: 2,665,054 shares; 2025Q1: 2,263,449 shares; 2025Q2: 2,266,701 shares; 2025Q3: 1,491,108 shares 1,491,108$42.9M4.66%-775,593Timeline
SWKSTANLEY BLACK & DECKER INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 354,527 shares; 2025Q1: 385,105 shares; 2025Q2: 141,964 shares; 2025Q3: 567,473 shares 567,473$42.2M4.58%+425,509Timeline
JAMFJAMF HOLDING CORPQuarterly 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: 3,077,674 shares; 2025Q2: 4,519,582 shares; 2025Q3: 3,893,883 shares 3,893,883$41.7M4.53%-625,699Timeline
DLTRDOLLAR TREE 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: 391,852 shares; 2025Q3: 389,168 shares 389,168$36.7M3.99%-2,684Timeline
FAFIRST ADVANTAGE CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,976,637 shares; 2024Q4: 2,292,235 shares; 2025Q1: 3,420,507 shares; 2025Q2: 1,608,701 shares; 2025Q3: 2,350,614 shares 2,350,614$36.2M3.93%+741,913Timeline
CBZCBIZ 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: 596,762 shares 596,762$31.6M3.44%newTimeline
ARMKARAMARKQuarterly 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: 1,238,712 shares; 2025Q3: 817,261 shares 817,261$31.4M3.41%-421,451Timeline
RPAYREPAY HLDGS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 5,416,840 shares; 2024Q4: 6,043,368 shares; 2025Q1: 6,168,501 shares; 2025Q2: 3,718,652 shares; 2025Q3: 3,928,000 shares 3,928,000$20.5M2.23%+209,348Timeline
DVDOUBLEVERIFY 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: 1,681,779 shares; 2025Q2: 1,689,893 shares; 2025Q3: 1,523,175 shares 1,523,175$18.2M1.98%-166,718Timeline

Sold out in Q3 2025

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

SecurityShares beforeValue beforeType
FISVFISERV INC273,954$47.2Mshares
FISFIDELITY NATL INFORMATION SV552,375$45Mshares
AMPLAMPLITUDE INC3,339,327$41.4Mshares
WTWWILLIS TOWERS WATSON PLC LTD78,461$24Mshares
PSFEPAYSAFE LIMITED688,442$8.69Mshares

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 0001892688-25-000189 base2025-11-13acceptance time not in the bulk data set