Sunriver Management 13F annual report

Sunriver Management is an investment fund managing more than $487 billion ran by John Stadnyk. There are currently 15 companies in Mr. Stadnyk’s portfolio. The largest investments include Fiserv and SS&C Technologies Inc, together worth $115 billion.

$487 billion Assets Under Management (AUM)

As of 6th February 2023, Sunriver Management’s top holding is 589,412 shares of Fiserv currently worth over $59.6 billion and making up 12.2% of the portfolio value. Relative to the number of outstanding shares of Fiserv, Sunriver Management owns more than approximately 0.1% of the company. In addition, the fund holds 1,067,167 shares of SS&C Technologies Inc worth $55.6 billion, whose value fell approximately 0.1% in the past six months. The third-largest holding is R1 RCM worth $50.5 billion and the next is Dun & Bradstreet worth $43 billion, with 3,505,980 shares owned.

Currently, Sunriver Management's portfolio is worth at least $487 billion. The total portfolio value may be much higher due to cash assets that are not publicly disclosed such as fixed income, real estate, or cash equivalents.

Careers at Sunriver Management

The Sunriver Management office and employees reside in Greenwich, Connecticut. According to the last 13-F report filed with the SEC, John Stadnyk serves as the Chief Financial Officer / Chief Compliance Officer at Sunriver Management.

Recent trades

In the most recent 13F filing, Sunriver Management revealed that it had opened a new position in Sonos Inc and bought 1,533,603 shares worth $25.9 billion. This means they effectively own approximately 0.1% of the company. Sonos Inc makes up 100.0% of the fund's Consumer Discretionary sector allocation and has decreased its share price by approximately 0.1% in the past year.

The investment fund also strengthened its position in R1 RCM by buying 2,276,401 additional shares. This makes their stake in R1 RCM total 4,611,328 shares worth $50.5 billion. R1 RCM dropped approximately 0.1% in the past year.

On the other hand, there are companies that Sunriver Management is getting rid of from its portfolio. Sunriver Management closed its position in Fidelity Natl Information Sv on 13th February 2023. It sold the previously owned 443,499 shares for $33.5 million. John Stadnyk also disclosed a decreased stake in Fiserv by approximately 0.1%. This leaves the value of the investment at $59.6 billion and 589,412 shares.

One of the largest hedge funds

The two most similar investment funds to Sunriver Management are Ophir Asset Management PTY Ltd and Iq Eq Fund Management (ireland) Ltd. They manage $487 billion and $488 billion respectively.


John Stadnyk investment strategy

Sunriver Management’s portfolio is diversified across 7 sectors. Currently, their heaviest sector is Technology — making up 34.8% of the total portfolio value. The fund focuses on investments in the United States as 60.0% of the portfolio companies are based in the United States.

The majority of the companies in the fund’s portfolio are large-cap stocks. Stocks with a size of more than $10 billion in market cap make up 20% of the total holdings value. On the other hand, small-cap stocks make up only approximately 0.1% of the portfolio. The average market cap of the portfolio companies is close to $11.6 billion.

The complete list of Sunriver Management trades based on 13F SEC filings

These positions were updated on February 13th based on the fund’s latest 13F filing. Quickly find out what the most recently closed or increased positions are.

Security Shares Owned Value Allocation
Fiserv, Inc.
1.91%
589,412
$59,571,871,000 12.23%
SS&C Technologies Holdings Inc
7.64%
1,067,167
$55,556,714,000 11.41%
R1 RCM Inc.
97.49%
4,611,328
$50,494,042,000 10.37%
Dun & Bradstreet Holdings, Inc.
17.63%
3,505,980
$42,983,315,000 8.83%
New Relic Inc
11.33%
728,904
$41,146,631,000 8.45%
Performance Food Group Company
35.52%
587,544
$34,306,694,000 7.04%
Take-two Interactive Softwar
6.51%
299,358
$31,172,149,000 6.40%
Box Inc
36.35%
956,830
$29,786,118,000 6.12%
Clarivate Plc
48.01%
3,449,279
$28,766,987,000 5.91%
Verra Mobility Corporation
5.06%
2,052,343
$28,383,904,000 5.83%
Sonos Inc
Opened
1,533,603
$25,917,891,000 5.32%
NeoGames S.A.
1.14%
1,839,394
$22,422,213,000 4.60%
N-able Inc
46.29%
1,987,792
$20,434,502,000 4.20%
Repay Hldgs Corp
Opened
1,590,869
$12,806,495,000 2.63%
Nuvei Corporation
Opened
127,464
$3,238,860,000 0.67%
Fidelity Natl Information Sv
Closed
443,499
$33,515,000
Diversey Hldgs Ltd
Closed
4,050,868
$19,687,000
Insperity Inc
Closed
187,312
$19,123,000
Masonite Intl Corp
Closed
254,926
$18,174,000
RingCentral Inc.
Closed
381,913
$15,261,000
No transactions found
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