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Sunriver Management LLC

CIK 1663900 · latest 13F filed 13 August 2026 · Read the filing on EDGAR

Sunriver Management LLC reported 21 US-listed holdings worth $636.8 million in its 13F for the quarter ended 30 June 2026, filed 13 August 2026. Its largest: Aramark (9.4%), Waste Connections Inc. (9.0%) and Ss&c Technologies Hldgs Inc. (7.9%). Against the quarter before, it opened 11 positions, added to 6, trimmed 4 and sold out of 8.

Reported holdings$636.8M+7.7% on Q1 2026
Positions21+3 on Q1 2026
The largest ten62.8%of its reported holdings
Latest 13FQ2 2026filed 13 August 2026
Where the money is
OpenedAdded toTrimmed
ARMK9.4%WCN9.0%SSNC7.9%DG6.0%FA5.5%BKNG5.4%LII5.3%LYV5.0%CNM4.7%WEX4.5%GPC4.5%BOBS4.0%PFGC3.9%CAE3.9%7 more20.9%

The 14 largest of its 21 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.

Reported holdings, quarter by quarter
Q3 2024: $813.5 million in 17 positions$813MQ3 24Q4 2024: $835.7 million in 19 positions$836MQ4 24Q1 2025: $810.3 million in 22 positions$810MQ1 25Q2 2025: $932.6 million in 23 positions$933MQ2 25Q3 2025: $920.0 million in 21 positions$920MQ3 25Q4 2025: $953.9 million in 23 positions$954MQ4 25Q1 2026: $591.3 million in 18 positions$591MQ1 26Q2 2026: $636.8 million in 21 positions$637MQ2 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What its reported holdings returned

Held through each quarter, the holdings it reported returned -4.3% over the 7 quarters to 30 June 2026, against +30.2% for the S&P 500.

Its reported holdingsThe S&P 500
90105120135Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Its holdings -4.3%S&P 500 +30.2%

Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.

What it did on the quarter

Opened 11Added 6Trimmed 4Sold out 8
Opened: 11Added: 6Trimmed: 4Sold out: 8

Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held

Opened 11

  1. Dollar General Corp. DG$38.3 million
  2. Booking Holdings Inc. BKNG$34.7 million
  3. Lennox International Inc. LII$33.8 million
  4. Core & Main, Inc. CNM$29.9 million
  5. Genuine Parts Co. GPC$28.5 million
  6. McGrath Rentcorp MGRC$24.0 million
  7. Insperity, Inc. NSP$21.4 million
  8. Construction Partners, Inc. ROAD$20.8 million

and 3 more in the table below

Added to 6

  1. Waste Connections Inc. WCN+20,830 shares · +6%
  2. Cae Inc. CAE+134,800 shares · +16%
  3. Bobs Disc Furniture Inc. BOBS+99,139 shares · +7%
  4. Ss&c Technologies Hldgs Inc. SSNC+15,402 shares · +2%
  5. Live Nation Entertainment, Inc. LYV+4,082 shares · +2%
  6. Huron Consulting Group Inc. HURN+1,843 shares · +1%

Trimmed 4

  1. First Advantage Corp. FA-1.1 million shares · -36%
  2. Aramark ARMK-341,875 shares · -24%
  3. Performance Food Group Co. PFGC-124,755 shares · -36%
  4. WEX Inc. WEX-1,176 shares · -1%

Sold out of 8

  1. Openlane, Inc. OPLN$44.3 million last quarter
  2. Verra Mobility Corp. VRRM$42.1 million last quarter
  3. CDW Corp. CDW$32.5 million last quarter
  4. Cbiz Inc. CBZ$26.0 million last quarter
  5. Fidelity National Information Services, Inc. FIS$25.7 million last quarter
  6. TransUnion TRU$23.0 million last quarter
  7. Lockheed Martin Corp. LMT$21.9 million last quarter
  8. Stanley Black & Decker, Inc. SWK$20.8 million last quarter

What it holds

CompanySharesValueOf its bookChange in shares
Aramark ARMK1.1M$60.1 million9.44%-341.9K
Waste Connections Inc. WCN343.5K$57.3 million8.99%+20.8K
Ss&c Technologies Hldgs Inc. SSNC813.3K$50.5 million7.92%+15.4K
Dollar General Corp. DG333.1K$38.3 million6.02%new
First Advantage Corp. FA1.9M$35.0 million5.50%-1.1M
Booking Holdings Inc. BKNG194.5K$34.7 million5.44%new
Lennox International Inc. LII59.0K$33.8 million5.31%new
Live Nation Entertainment, Inc. LYV174.7K$32.0 million5.02%+4.1K
Core & Main, Inc. CNM620.0K$29.9 million4.70%new
WEX Inc. WEX202.5K$28.6 million4.49%-1.2K
Genuine Parts Co. GPC242.0K$28.5 million4.48%new
Bobs Disc Furniture Inc. BOBS1.6M$25.6 million4.02%+99.1K
Performance Food Group Co. PFGC220.5K$24.6 million3.87%-124.8K
Cae Inc. CAE979.2K$24.5 million3.85%+134.8K
McGrath Rentcorp MGRC198.7K$24.0 million3.78%new
Insperity, Inc. NSP517.0K$21.4 million3.35%new
Huron Consulting Group Inc. HURN235.7K$21.2 million3.34%+1.8K
Construction Partners, Inc. ROAD175.2K$20.8 million3.27%new
Waystar Holding Corp. WAY855.0K$17.6 million2.76%new
Solstice Advanced Materials Inc. SOLS196.9K$17.4 million2.74%new
Korn Ferry KFY163.8K$10.9 million1.71%new
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before; the 8 it sold out of are in the box above.