Sunriver Management LLC 13F: Quarter-over-Quarter Portfolio Changes
Sunriver Management LLC reported a disclosed portfolio value of approximately $636.8 million in its latest SEC Form 13F-HR filing for Q2 2026, up 7.7% quarter on quarter. Over the quarter, the fund initiated 11 new positions, bought more shares in 6 holdings, trimmed 4 holdings, and exited 8 positions.
Sunriver Management LLC's top buy was a new stake in Dollar Gen CORP (DG) , equal to 6.0% of the disclosed portfolio. Its top sell was Openlane INC (OPLN) . The fund exited the position completely after it had accounted for 7.5% of the previous portfolio.
New PositionsQ2 2026
Securities disclosed for the first time in Q2 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| DOLLAR GEN CORP | DG | 6.0% | History → |
| BOOKING HLDGS INC | BKNG | 5.4% | History → |
| LENNOX INTL INC | LII | 5.3% | History → |
| CORE & MAIN INC | CNM | 4.7% | History → |
| GENUINE PARTS CO | GPC | 4.5% | Holders → |
| MCGRATH RENTCORP | MGRC | 3.8% | Holders → |
| INSPERITY INC | NSP | 3.4% | Holders → |
| CONSTRUCTION PARTNERS INC | ROAD | 3.3% | Holders → |
| WAYSTAR HLDG CORP | WAY | 2.8% | Holders → |
| SOLSTICE ADVANCED MATLS INC | SOLS | 2.7% | Holders → |
| KORN FERRY | KFY | 1.7% | Holders → |
Top BuysQ2 2026
The fund's top buys among existing positions in Q2 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| CAE INC | CAE | +0.1% | +16.0% | Holders → |
| BOBS DISC FURNITURE INC | BOBS | +1.0% | +6.5% | Holders → |
| WASTE CONNECTIONS INC | WCN | +0.1% | +6.5% | History → |
| LIVE NATION ENTERTAINMENT IN | LYV | +0.6% | +2.4% | History → |
| SS&C TECH HLDGS | SSNC | +-1.2% | +1.9% | History → |
| HURON CONSULTING GROUP INC | HURN | +-1.7% | +0.8% | Holders → |
Top SellsQ2 2026
The fund's top sells among positions it retained in Q2 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| PERFORMANCE FOOD GROUP CO | PFGC | -1.1% | 36.1% | Holders → |
| FIRST ADVANTAGE CORP NEW | FA | -0.5% | 36.0% | History → |
| ARAMARK | ARMK | -0.1% | 24.4% | History → |
| WEX INC | WEX | -0.8% | 0.6% | History → |
Full ExitsQ2 2026
Positions present in the prior 13F-HR filing that no longer appear in Q2 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| OPENLANE INC | OPLN | 7.5% |
| VERRA MOBILITY CORP | VRRM | 7.1% |
| CDW CORP | CDW | 5.5% |
| CBIZ INC | CBZ | 4.4% |
| FIDELITY NATL INFORMATION SV | FIS | 4.4% |
| TRANSUNION COM | TRU | 3.9% |
| LOCKHEED MARTIN CORP | LMT | 3.7% |
| STANLEY BLACK & DECKER INC | SWK | 3.5% |
Net Portfolio Value ChangeQ2 2026
- $0.6BPrior quarter
- $0.6BCurrent quarter
- +$0.0BNet delta
- +7.7%% change
Methodology & FAQ
How Sunriver Management LLC Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for Sunriver Management LLC: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description, including how confidential treatment filings are handled, is documented in the Methodology.
What stocks did Sunriver Management LLC buy in Q2 2026?
In Q2 2026, Sunriver Management LLC initiated 11 new positions (DOLLAR GEN CORP (DG), BOOKING HLDGS INC (BKNG), LENNOX INTL INC (LII), CORE & MAIN INC (CNM), GENUINE PARTS CO (GPC), MCGRATH RENTCORP (MGRC), INSPERITY INC (NSP), CONSTRUCTION PARTNERS INC (ROAD), WAYSTAR HLDG CORP (WAY), SOLSTICE ADVANCED MATLS INC (SOLS), KORN FERRY (KFY)); bought more shares of CAE INC (CAE), BOBS DISC FURNITURE INC (BOBS), WASTE CONNECTIONS INC (WCN), LIVE NATION ENTERTAINMENT IN (LYV), SS&C TECH HLDGS (SSNC) (the largest 5 of 6 adds).
What stocks did Sunriver Management LLC sell in Q2 2026?
In Q2 2026, Sunriver Management LLC fully sold 8 positions (OPENLANE INC (OPLN), VERRA MOBILITY CORP (VRRM), CDW CORP (CDW), CBIZ INC (CBZ), FIDELITY NATL INFORMATION SV (FIS), TRANSUNION COM (TRU), LOCKHEED MARTIN CORP (LMT), STANLEY BLACK & DECKER INC (SWK)); reduced holdings in PERFORMANCE FOOD GROUP CO (PFGC), FIRST ADVANTAGE CORP NEW (FA), ARAMARK (ARMK), WEX INC (WEX).
Which positions did Sunriver Management LLC initiate in Q2 2026?
Sunriver Management LLC established 11 new positions in Q2 2026: DOLLAR GEN CORP (DG, 6.0%), BOOKING HLDGS INC (BKNG, 5.4%), LENNOX INTL INC (LII, 5.3%), CORE & MAIN INC (CNM, 4.7%), GENUINE PARTS CO (GPC, 4.5%), MCGRATH RENTCORP (MGRC, 3.8%), INSPERITY INC (NSP, 3.4%), CONSTRUCTION PARTNERS INC (ROAD, 3.3%), WAYSTAR HLDG CORP (WAY, 2.8%), SOLSTICE ADVANCED MATLS INC (SOLS, 2.7%), KORN FERRY (KFY, 1.7%).
Which existing positions saw the largest allocation increases for Sunriver Management LLC in Q2 2026?
Of 6 existing positions with share-count increases in Q2 2026, the largest were: CAE INC (CAE, +0.1% weight, +16.0% shares), BOBS DISC FURNITURE INC (BOBS, +1.0% weight, +6.5% shares), WASTE CONNECTIONS INC (WCN, +0.1% weight, +6.5% shares), LIVE NATION ENTERTAINMENT IN (LYV, +0.6% weight, +2.4% shares), SS&C TECH HLDGS (SSNC, +-1.2% weight, +1.9% shares), HURON CONSULTING GROUP INC (HURN, +-1.7% weight, +0.8% shares).
Which positions did Sunriver Management LLC fully exit in Q2 2026?
Sunriver Management LLC fully exited 8 positions in Q2 2026: OPENLANE INC (OPLN, last-reported weight 7.5%), VERRA MOBILITY CORP (VRRM, last-reported weight 7.1%), CDW CORP (CDW, last-reported weight 5.5%), CBIZ INC (CBZ, last-reported weight 4.4%), FIDELITY NATL INFORMATION SV (FIS, last-reported weight 4.4%), TRANSUNION COM (TRU, last-reported weight 3.9%), LOCKHEED MARTIN CORP (LMT, last-reported weight 3.7%), STANLEY BLACK & DECKER INC (SWK, last-reported weight 3.5%).
Which existing positions saw the largest allocation reductions for Sunriver Management LLC in Q2 2026?
Of 4 existing positions with share-count reductions in Q2 2026, the largest were: PERFORMANCE FOOD GROUP CO (PFGC, -1.1% weight, -36.1% shares), FIRST ADVANTAGE CORP NEW (FA, -0.5% weight, -36.0% shares), ARAMARK (ARMK, -0.1% weight, -24.4% shares), WEX INC (WEX, -0.8% weight, -0.6% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.