StreetAlpha
13F holdings · Q2 2026

Sunriver Management

Greenwich, CT · files as Sunriver Management LLC
Holdings as of Jun 30, 2026Filed Aug 13, 2026Next filing due Nov 16, 2026CIK 1663900

Sunriver Management reported 21 stocks worth $637M in its 13F filing for Q2 2026, filed Aug 13, 2026. Its largest holdings are ARMK (9.4%), WCN (9.0%) and SSNC (7.9%). Compared with Q1 2026, the fund opened new positions in DG, BKNG and LII, added to WCN, SSNC and LYV, trimmed ARMK, FA and WEX and sold out of OPLN, VRRM and CDW.

Reported value$637M+7.7% vs last quarter
Stocks held2111 new · 8 sold out
Top 5 weight37.9%fairly concentrated
Turnover91%of the portfolio changed
🔒 A free account shows every holding, what the fund sold and its options.Create free account

Holdings

#StockValueWeightSharesChangeShares, 8 qtrsHeld
1
ARMK
Aramark
$60.1M9.4%1.1M−342K (−24%)5 of 8
2
WCN
Waste Connections Inc
$57.3M9.0%344K+21K (+6%)2 of 8
3
SSNC
Ss&C Technologies Hldgs Inc
$50.5M7.9%813K+15K (+2%)7 of 8
4
DG
Dollar Gen Corp New
$38.3M6.0%333KNew position1 of 8
5
FA
First Advantage Corp New
$35M5.5%1.9M−1.1M (−36%)8 of 8
6
BKNG
Booking Hldgs Inc
$34.7M5.4%194KNew position1 of 8
7
LII
Lennox Intl Inc
$33.8M5.3%59KNew position1 of 8
8
LYV
Live Nation Entmt Inc
$32M5.0%175K+4,082 (+2%)3 of 8
9
CNM
CORE &amp MAIN INC
$29.9M4.7%620KNew position1 of 8
10
WEX
Wex Inc
$28.6M4.5%203K−1,176 (−1%)8 of 8
🔒 11 more holdings in this filing. Create a free account or sign in to see them all.

Positions at Jun 30, 2026, as reported. Change is against the fund's Q1 2026 filing; weight is the share of the fund's reported stocks.

Sold out

held in Q1 2026, gone in Q2 2026
StockValue last quarterShares sold
OPLN
Openlane Inc
$44.3M1.5M
VRRM
Verra Mobility Corp
$42.1M2.9M
CDW
Cdw Corp
$32.5M268K
CBZ
Cbiz Inc
$26M969K
FIS
Fidelity Natl Information SV
$25.7M549K

🔒 Free account: see all 8.

Reported value

last 8 quarters
$813MQ3 '24
$836MQ4 '24
$810MQ1 '25
$933MQ2 '25
$920MQ3 '25
$954MQ4 '25
$591MQ1 '26
$637MQ2 '26

The value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.

Filings for Q2 2026

straight from the SEC
FiledFormQuarter
Aug 13, 202613F-HRQ2 2026SEC filing ↗

Other superinvestors

All hedge fund holdings →

Sunriver Management 13F FAQ

What does Sunriver Management own?

Sunriver Management reported 21 stocks worth $637M in its 13F filing for Q2 2026, filed Aug 13, 2026. Its largest holdings are ARMK (9.4%), WCN (9.0%) and SSNC (7.9%). The table above lists every position in the filing (the top 10 without an account).

What did Sunriver Management buy and sell in Q2 2026?

Compared with Q1 2026: 11 new positions, 6 added to, 4 trimmed and 8 sold out. New positions include DG, BKNG and LII. It sold all of OPLN, VRRM and CDW.

When will Sunriver Management file its next 13F?

Holdings as of Sep 30, 2026 are due by Nov 16, 2026. The filing appears on this page within minutes of reaching the SEC.

How much is Sunriver Management's portfolio worth?

The Q2 2026 filing reports $637M in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.

For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.