Which funds own SEI
Solaris Energy Infras Inc in the Q2 2026 filings. At least 4 of the 91 current managers on file reported a position, worth $210m between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.
- Managers holding
- 4
- at least, of 91 current
- Combined value
- $210m
- as reported
- Opened
- 2
- new this quarter
- Added to
- 1
- already held
- Trimmed or sold out
- 2
- 1 sold out entirely
Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.
Managers reporting a position
Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.
| Manager | Value | Weight | Shares | Change on the quarter | Action |
|---|---|---|---|---|---|
| Two Sigma Investments LP Quantitative · $138bn book | $159m | 0.1% | 1,979,861 | +$50m+38,315 | Added |
| Steadfast Capital Management LP Long/short equity · $3.3bn book | $39m | 1.2% | 481,901 | opened481,901 | New |
| Polen Capital Management LLC Long-only · $11.6bn book | $6.5m | 0.1% | 80,324 | +$1.7m-3,351 | Trimmed |
| Davidson Kempner Capital Management LP Long/short equity · $8.4bn book | $5.6m | 0.1% | 70,000 | opened70,000 | New |
Sold out of this quarter
Valued at what the position was worth in the previous filing, because by this one it is gone.
- Rokos Capital Management LLP · Macro$1.9m held before
Ownership through time
At least 10 of the 95 managers whose filings are on file listed SEI in Q2 2026, against 1 in Q3 2017. 3 managers more than in Q1 2026: 4 started positions; 3 listed it again; 1 sold out, by its own filing; 3 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, or a filing not yet made.
Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.
- Q3 2017: 1
- Q4 2017: 1
- Q1 2018: 2
- Q2 2018: 1
- Q3 2018: 1
- Q4 2018: 2
- Q1 2019: 2
- Q2 2019: 1
- Q3 2019: 1
- Q4 2019: 1
- Q1 2020: 3
- Q2 2020: 3
- Q3 2020: 2
- Q1 2022: 1
- Q2 2022: 1
- Q3 2022: 1
- Q4 2022: 1
- Q4 2023: 1
- Q1 2025: 2
- Q2 2025: 1
- Q3 2025: 9
- Q4 2025: 7
- Q1 2026: 7
- Q2 2026: 10
- Q3 2017: $3.9m
- Q4 2017: $2.4m
- Q1 2018: $7.9m
- Q2 2018: $6.4m
- Q3 2018: $8.4m
- Q4 2018: $12m
- Q1 2019: $20m
- Q2 2019: $18m
- Q3 2019: $16m
- Q4 2019: $16m
- Q1 2020: $8.7m
- Q2 2020: $7.4m
- Q3 2020: $572k
- Q1 2022: $255k
- Q2 2022: $231k
- Q3 2022: $161k
- Q4 2022: $171k
- Q4 2023: $3.9m
- Q1 2025: $5.0m
- Q2 2025: $3.4m
- Q3 2025: $148m
- Q4 2025: $221m
- Q1 2026: $342m
- Q2 2026: $328m
Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.
Started in Q2 2026
Largest increases, by shares
- Steadfast Capital Management LPnew: 481,901 shares+$39m
- Verition Fund Management LLCnew: 130,241 shares+$10m
- Davidson Kempner Capital Management LPnew: 70,000 shares+$5.6m
- Two Sigma Investments LP1,941,546 to 1,979,861 shares+$3.1m
- Caxton Associates LLPnew: 10,813 shares+$870k
Largest decreases, by shares
- Freestone Grove Partners LP133,480 to 36,720 shares-$7.8m
- Polen Capital Management LLC83,675 to 80,324 shares-$270k
Left it
- Rokos Capital Management LLPwas $1.9m
What SEI is worth
Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.
Build the comp set around SEI →How much of the picture this is
A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.
What to do with a name the funds are buying
Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.
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The holdings, every quarter, and the week between
One email a week on what moved in the market and what it means for the people interviewing into it, with the 13F changes the quarter they are filed.
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