Sunriver Management LLC — 13F Holdings & Portfolio
CIK 1663900 · latest 13F-HR filed 2026-08-13
Sunriver Management LLC manages $636.8M in 13F-reported U.S. long-equity assets across 21 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are ARMK (9.44%), WCN (8.99%), SSNC (7.92%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 11 new positions, exited 8, added to 5, and trimmed 4.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
2ND FLOOR
GREENWICH, CT 06830
$636.8M
Long-equity book
21
Distinct positions
2026-06-30
Filed 2026-08-13
+11 / −8 / ↑5 / ↓4
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- BOBS DISC FURNITURE INC$7.7M +43.4%
- LIVE NATION ENTERTAINMENT IN$6.0M +22.9%
- WASTE CONNECTIONS INC$4.8M +9.2%
- ARAMARK$3.4M +6.0%
- CAE INC$2.5M +11.6%
Top Trims
- HURON CONSULTING GROUP INC-$8.6M -28.7%
- PERFORMANCE FOOD GROUP CO-$4.9M -16.7%
- SS&C TECH HLDGS-$3.4M -6.4%
- WEX INC-$2.6M -8.3%
New Positions
- DOLLAR GEN CORP$38.3M
- BOOKING HOLDINGS INC$34.7M
- LENNOX INTL INC$33.8M
- CORE & MAIN INC$29.9M
- GENUINE PARTS CO$28.5M
Exited Positions
- OPENLANE INC$44.3M
- VERRA MOBILITY CORP$42.1M
- CDW CORP$32.5M
- CBIZ INC$26.0M
- FIDELITY NATL INFORMATION SV$25.7M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ARAMARK | ARMK | 03852U106 | $60.1M | 9.44% | 1,056,474 | SH |
| 2 | WASTE CONNECTIONS INC | WCN | 94106B101 | $57.3M | 8.99% | 343,513 | SH |
| 3 | SS&C TECH HLDGS | SSNC | 78467J100 | $50.5M | 7.92% | 813,251 | SH |
| 4 | DOLLAR GEN CORP | DG | 256677105 | $38.3M | 6.02% | 333,053 | SH |
| 5 | FIRST ADVANTAGE CORP NEW | FA | 31846B108 | $35.0M | 5.50% | 1,940,912 | SH |
| 6 | BOOKING HOLDINGS INC | BKNG | 09857L108 | $34.7M | 5.44% | 194,470 | SH |
| 7 | LENNOX INTL INC | LII | 526107107 | $33.8M | 5.31% | 59,007 | SH |
| 8 | LIVE NATION ENTERTAINMENT IN | LYV | 538034109 | $32.0M | 5.02% | 174,743 | SH |
| 9 | CORE & MAIN INC | CNM | 21874C102 | $29.9M | 4.70% | 620,017 | SH |
| 10 | WEX INC | WEX | 96208T104 | $28.6M | 4.49% | 202,518 | SH |
| 11 | GENUINE PARTS CO | GPC | 372460105 | $28.5M | 4.48% | 241,980 | SH |
| 12 | BOBS DISC FURNITURE INC | BOBS | 09681N106 | $25.6M | 4.02% | 1,616,590 | SH |
| 13 | PERFORMANCE FOOD GROUP CO | PFGC | 71377A103 | $24.6M | 3.87% | 220,456 | SH |
| 14 | CAE INC | CAE | 124765108 | $24.5M | 3.85% | 979,193 | SH |
| 15 | MCGRATH RENTCORP | MGRC | 580589109 | $24.0M | 3.78% | 198,684 | SH |
| 16 | INSPERITY INC | NSP | 45778Q107 | $21.4M | 3.35% | 516,995 | SH |
| 17 | HURON CONSULTING GROUP INC | HURN | 447462102 | $21.2M | 3.34% | 235,663 | SH |
| 18 | CONSTRUCTION PARTNERS INC | ROAD | 21044C107 | $20.8M | 3.27% | 175,223 | SH |
| 19 | WAYSTAR HLDG CORP | WAY | 946784105 | $17.6M | 2.76% | 855,000 | SH |
| 20 | SOLSTICE ADVANCED MATLS INC | SOLS | 83443Q103 | $17.4M | 2.74% | 196,879 | SH |
| 21 | KORN FERRY | KFY | 500643200 | $10.9M | 1.71% | 163,836 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $636.8M | 21 | 0001892688-26-000115 |
| 2026-03-31 | 2026-05-14 | $591.3M | 18 | 0001892688-26-000072 |
| 2025-12-31 | 2026-02-13 | $953.9M | 23 | 0001892688-26-000031 |
| 2025-09-30 | 2025-11-13 | $920.0M | 21 | 0001892688-25-000189 |