Managers / Q1 2026
Sunriver Management LLC
CIK 0001663900 · 2 SOUND VIEW DRIVE, 2ND FLOOR, GREENWICH, CT, 06830 · 2039003900
Summary
Sunriver Management LLC reported $591M in U.S.-listed holdings across 18 positions for Q1 2026.
Its largest position, ARMK, represents 9.6% of the portfolio.
Compared with Q4 2025, the fund opened 4 new positions and exited 9.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 100.0% · $591M
Quarter-over-Quarter Changes full breakdown →
vs Q4 2025 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| WCNWASTE CONNECTIONS INC | NEW | +322.7K | 322.7K | +$52M | $52M |
| FISFIDELITY NATL INFORMATION SV | NEW | +548.9K | 548.9K | +$26M | $26M |
| CAECAE INC | NEW | +844.4K | 844.4K | +$22M | $22M |
| BOBSBOBS DISC FURNITURE INC | NEW | +1.52M | 1.52M | +$18M | $18M |
| BOXBOX INC | SOLD OUT | −1.74M | 0 | −$52M | $0 |
| RTORENTOKIL INITIAL PLC | SOLD OUT | −1.70M | 0 | −$50M | $0 |
| SYYSYSCO CORP | SOLD OUT | −652.8K | 0 | −$48M | $0 |
| NABLN-ABLE INC | SOLD OUT | −6.13M | 0 | −$46M | $0 |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q1 2026
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | ARMKARAMARKhistory → | COM | 9.59% | $57M | 1.40M |
| 2 | SSNCSS&C TECH HLDGShistory → | COM | 9.12% | $54M | 797.8K |
| 3 | WCNWASTE CONNECTIONS INChistory → | COM | 8.86% | $52M | 322.7K |
| 4 | OPLNOPENLANE INChistory → | COM | 7.48% | $44M | 1.52M |
| 5 | VRRMVERRA MOBILITY CORPhistory → | CL A COM STK | 7.11% | $42M | 2.94M |
| 6 | FAFIRST ADVANTAGE CORP NEWhistory → | COM | 6.03% | $36M | 3.03M |
| 7 | CDWCDW CORPhistory → | COM | 5.49% | $32M | 268.4K |
| 8 | WEXWEX INChistory → | COM | 5.27% | $31M | 203.7K |
| 9 | HURNHURON CONSULTING GROUP INChistory → | COM | 5.04% | $30M | 233.8K |
| 10 | PFGCPERFORMANCE FOOD GROUP COhistory → | COM | 5.00% | $30M | 345.2K |
| 11 | LYVLIVE NATION ENTERTAINMENT INhistory → | COM | 4.40% | $26M | 170.7K |
| 12 | CBZCBIZ INChistory → | COM | 4.40% | $26M | 968.6K |
| 13 | FISFIDELITY NATL INFORMATION SVhistory → | COM | 4.35% | $26M | 548.9K |
| 14 | TRUTRANSUNIONhistory → | COM | 3.88% | $23M | 331.8K |
| 15 | CAECAE INChistory → | COM | 3.72% | $22M | 844.4K |
| 16 | LMTLOCKHEED MARTIN CORPhistory → | COM | 3.71% | $22M | 36.3K |
| 17 | SWKSTANLEY BLACK & DECKER INChistory → | COM | 3.52% | $21M | 293.0K |
| 18 | BOBSBOBS DISC FURNITURE INChistory → | COM SHS | 3.02% | $18M | 1.52M |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $591M | 18 | May 14, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $954M | 23 | Feb 13, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $920M | 21 | Nov 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $933M | 23 | Aug 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $810M | 22 | May 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $836M | 19 | Feb 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $813M | 17 | Nov 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $790M | 20 | Aug 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $765M | 20 | May 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $638M | 22 | Feb 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $529M | 19 | Nov 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $496M | 17 | Aug 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $479M | 17 | May 15, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $487M | 15 | Feb 13, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $581M | 17 | Nov 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $631M | 18 | Aug 15, 2022 | RESTATEMENT | changes · EDGAR ↗ |
| Q1 2022 | $635M | 20 | May 13, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $634M | 17 | Feb 11, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $629M | 21 | Nov 15, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $588M | 20 | Aug 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $535M | 19 | May 17, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $606M | 19 | Feb 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $626M | 20 | Nov 16, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $634M | 20 | Aug 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $571M | 18 | May 15, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $570M | 19 | Feb 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $516M | 18 | Nov 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $490M | 19 | Aug 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $502M | 18 | May 15, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $440M | 18 | Feb 14, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.