SM
Sunriver Management LLC
ContrarianSector-focusedHigh-turnover trader
Total reported value
$591.3M
Reporting period: 2026-03-31 · Number of holdings: 18
Sunriver Management LLC disclosed 18 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $591.3M and a quarterly turnover rate of 82.9%.
Browse other institutions with $100M to $1B AUMBrowse other institutions starting with "S"
Personality snowflake
- Concentration
- 25.07
- Portfolio Stability
- 82.9
- Momentum/Contrarian
- 0
- Sector conviction
- 98.11
- Diversification
- 36
- Sizing Uniformity
- 96.32
Recent moves
Add ARMK
+3.5% $6.9M
Add SSNC
+26.5% -$1.2M
Add CDW
+58.8% $9.5M
Trim LMT
-72.0% -$40.6M
Add OPLN
+1.3% -$371.8K
Add LYV
+13.8% $4.7M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ARMK | Aramark | Stock-Industrials | 9.59% | +4.37% | +3.47% | |
| 2 | SSNC | Ss&c Technologies Holdings | Stock-Tech | 9.12% | +3.34% | +26.47% | |
| 3 | WCN | Waste Connections INC | Stock-Industrials | 8.86% | +8.86% | NEW | |
| 4 | OPLN | Openlane INC | Stock-Other | 7.48% | +2.80% | +1.31% | |
| 5 | VRRM | Verra Mobility CORP | Stock-Other | 7.11% | +0.16% | -0.44% | |
| 6 | FA | First Advantage CORP | Stock-Other | 6.03% | +1.98% | +13.96% | |
| 7 | CDW | Cdw Corp/de | Stock-Tech | 5.49% | +3.08% | +58.81% | |
| 8 | WEX | Wex INC | Stock-Tech | 5.27% | +0.13% | -38.12% | |
| 9 | HURN | Huron Consulting Group INC | Stock-Other | 5.04% | -0.02% | -16.22% | |
| 10 | PFGC | Performance Food Group Co | Stock-Consumer Staples | 5.00% | +0.72% | -24.02% | |
| 11 | LYV | Live Nation Entertainment In | Stock-Comm Services | 4.40% | +2.16% | +13.77% | |
| 12 | CBZ | Cbiz INC | Stock-Other | 4.40% | -0.83% | -2.09% | |
| 13 | FIS | Fidelity National Info Serv | Stock-Tech | 4.35% | +4.35% | NEW | |
| 14 | TRU | Transunion | Stock-Financials | 3.88% | -0.78% | -35.93% | |
| 15 | CAE | Cae INC | Stock-Other | 3.72% | +3.72% | NEW | |
| 16 | LMT | Lockheed Martin CORP | Stock-Industrials | 3.71% | -2.85% | -71.95% | |
| 17 | SWK | Stanley Black & Decker INC | Stock-Industrials | 3.52% | +0.14% | -32.43% | |
| 18 | BOBS | Bob's Discount Furniture | Stock-Other | 3.02% | +3.02% | NEW |
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 18 | $591.3M | 83 | |
| 2025-12-31 | 23 | $953.9M | 51 | |
| 2025-09-30 | 21 | $920.0M | 66 | |
| 2025-06-30 | 23 | $932.6M | 0 | |
| 2025-03-31 | 22 | $810.3M | 100 | |
| 2024-12-31 | 19 | $835.7M | 0 | |
| 2024-09-30 | 17 | $813.5M | 0 | |
| 2024-06-30 | 20 | $790.0M | 0 | |
| 2024-03-31 | 20 | $765.2M | 0 | |
| 2023-12-31 | 22 | $638.3M | 0 | |
| 2023-09-30 | 19 | $528.9M | 0 | |
| 2023-06-30 | 17 | $495.7M | 0 | |
| 2023-03-31 | 17 | $479.5M | 0 | |
| 2022-12-31 | 15 | $487.0M | 0 | |
| 2022-09-30 | 17 | $581.1M | 0 | |
| 2022-06-30 | 18 | $480.6M | 0 | |
| 2022-03-31 | 20 | $635.3M | 0 | |
| 2021-12-31 | 17 | $633.6M | 0 | |
| 2021-09-30 | 21 | $629.2M | 0 | |
| 2021-06-30 | 20 | $587.7M | 95 | |
| 2021-03-31 | 19 | $534.8M | 56 | |
| 2020-12-31 | 19 | $606.3M | 39 | |
| 2020-09-30 | 20 | $626.3M | 44 | |
| 2020-06-30 | 20 | $634.2M | 38 | |
| 2020-03-31 | 18 | $570.5M | 100 | |
| 2019-12-31 | 19 | $569.7M | 100 | |
| 2019-09-30 | 18 | $516.3M | 49 | |
| 2019-06-30 | 19 | $490.1M | 53 | |
| 2019-03-31 | 18 | $502.4M | 52 | |
| 2018-12-31 | 18 | $439.6M | 39 | |
| 2018-09-30 | 20 | $484.0M | 55 | |
| 2018-06-30 | 19 | $467.5M | 31 | |
| 2018-03-31 | 20 | $447.1M | 38 | |
| 2017-12-31 | 19 | $474.4M | 74 | |
| 2017-09-30 | 17 | $378.6M | 64 | |
| 2017-06-30 | 19 | $449.0M | 43 | |
| 2017-03-31 | 18 | $420.6M | 47 | |
| 2016-12-31 | 17 | $365.7M | 61 | |
| 2016-09-30 | 19 | $330.6M | 82 | |
| 2016-06-30 | 19 | $323.0M | 51 | |
| 2016-03-31 | 19 | $271.2M | 71 | |
| 2015-12-31 | 20 | $148.9M | 0 |
Holding changes this quarter
Sunriver Management LLC's most significant position changes for 2026-03-31: New buy: Waste Connections INC (WCN); Sold out: Box INC - Class A (BOX); Sold out: Rentokil Initial Plc-sp Adr (RTO); Sold out: Sysco CORP (SYY); Sold out: N-able INC (NABL).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ARMK | Aramark | +4.4% | +3.47% | Add |
| 2 | SSNC | Ss&c Technologies Holdings | +3.3% | +26.47% | Add |
| 3 | CDW | Cdw Corp/de | +3.1% | +58.81% | Add |
| 4 | OPLN | Openlane INC | +2.8% | +1.31% | Add |
| 5 | LYV | Live Nation Entertainment In | +2.2% | +13.77% | Add |
| 6 | FA | First Advantage CORP | +2% | +13.96% | Add |
| 7 | PFGC | Performance Food Group Co | +0.7% | -24.02% | Trim |
| 8 | VRRM | Verra Mobility CORP | +0.2% | -0.44% | Trim |
| 9 | SWK | Stanley Black & Decker INC | +0.1% | -32.43% | Trim |
| 10 | WEX | Wex INC | +0.1% | -38.12% | Trim |
| 11 | HURN | Huron Consulting Group INC | 0% | -16.22% | Trim |
| 12 | TRU | Transunion | -0.8% | -35.93% | Trim |
| 13 | CBZ | Cbiz INC | -0.8% | -2.09% | Trim |
| 14 | LMT | Lockheed Martin CORP | -2.9% | -71.95% | Trim |
| 15 | WCN | Waste Connections INC | — | NEW | New buy |
| 16 | BOX | Box INC - Class A | — | EXIT | Sold out |
| 17 | RTO | Rentokil Initial Plc-sp Adr | — | EXIT | Sold out |
| 18 | SYY | Sysco CORP | — | EXIT | Sold out |
| 19 | NABL | N-able INC | — | EXIT | Sold out |
| 20 | HII | Huntington Ingalls Industrie | — | EXIT | Sold out |
| 21 | IQV | Iqvia Holdings INC | — | EXIT | Sold out |
| 22 | FIS | Fidelity National Info Serv | — | NEW | New buy |
| 23 | ACVA | Acv Auctions Inc-a | — | EXIT | Sold out |
| 24 | CAE | Cae INC | — | NEW | New buy |
| 25 | BOBS | Bob's Discount Furniture | — | NEW | New buy |
| 26 | RPAY | Repay Holdings CORP | — | EXIT | Sold out |
| 27 | CCC | Ccc Intelligent Solutions Ho | — | EXIT | Sold out |
FAQ
What is Sunriver Management LLC and what type of investor is it?
Sunriver Management LLC is a investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-03-31), the firm manages a tracked equity portfolio valued at approximately $591.3M, spread across 18 disclosed positions.
What are Sunriver Management LLC's largest equity positions?
Based on the latest 13F filing, Sunriver Management LLC's top holdings by market value are:
1. Aramark (ARMK) — $56.7M (9.6%)
2. Ss&c Technologies Holdings (SSNC) — $53.9M (9.1%)
3. Waste Connections INC (WCN) — $52.4M (8.9%)
4. Openlane INC (OPLN) — $44.3M (7.5%)
5. Verra Mobility CORP (VRRM) — $42.1M (7.1%)
What changes did Sunriver Management LLC make in its most recent portfolio filing?
In the latest reported quarter, Sunriver Management LLC made 27 notable position adjustments: 4 new positions were initiated, 6 existing holdings were added to, 8 positions were partially reduced, and 9 were completely exited. The largest of these moves: New buy: Waste Connections INC (WCN); Sold out: Box INC - Class A (BOX); Sold out: Rentokil Initial Plc-sp Adr (RTO); Sold out: Sysco CORP (SYY); Sold out: N-able INC (NABL)
What sectors does Sunriver Management LLC focus on?
Sunriver Management LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Industrials: 40.6%
• Information Technology: 38.4%
• Consumer Staples: 7.9%
• Communication Services: 7.0%
• Financials: 6.1%
Peer Institutions
Institutions with a similar AUM
FC
FinTrust Capital Advisors, LLC
Total reported value
$591.3M
1,410 stks
2024-09-30
Concentration5.5
Portfolio Stability0.0
Sector conviction42.8
AUM within 0.0% of this institution
View detail
L&
Land & Buildings Investment Management, LLC
Total reported value
$591.4M
20 stks
2026-03-31
Concentration23.6
Portfolio Stability55.3
Sector conviction100.0
AUM within 0.0% of this institution
View detail
MP
MA Private Wealth
Total reported value
$591.4M
86 stks
2026-03-31
Concentration20.3
Portfolio Stability22.6
Sector conviction100.0
AUM within 0.0% of this institution
View detail
Similar Holdings Style
Institutions with overlapping top holdings
FM
Fiduciary Management INC /wi/
Total reported value
$8.1B
62 stks
2026-03-31
Concentration9.1
Portfolio Stability27.7
Sector conviction66.0
1 of the top 5 holdings overlap, including Aramark
View detail
AR
Advisory Research INC
Total reported value
$813.5M
170 stks
2026-03-31
Concentration8.3
Portfolio Stability35.4
Sector conviction35.9
1 of the top 5 holdings overlap, including Openlane INC
View detail
AC
Ascend Capital, LLC
Total reported value
$2.0B
1,135 stks
2018-09-30
Concentration6.1
Portfolio Stability100.0
Sector conviction47.0
1 of the top 5 holdings overlap, including Waste Connections INC
View detail