Oil States International
OIS
217 hedge funds and large institutions have $631M invested in Oil States International in 2026 Q1 according to their latest regulatory filings, with 59 funds opening new positions, 76 increasing their positions, 57 reducing their positions, and 19 closing their positions.
90,100% more call options, than puts
Call options by funds: $902K | Put options by funds: $1K
211% more first-time investments, than exits
New positions opened: 59 | Existing positions closed: 19
83% more capital invested
Capital invested by funds: $345M → $631M (+$286M)
33% more repeat investments, than reductions
Existing positions increased: 76 | Existing positions reduced: 57
20% more funds holding
Funds holding: 181 → 217 (+36)
4.73% more ownership
Funds ownership: 85.4% → 90.13% (+4.7%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
+$13.7M |
| 2 |
Marshall Wace
London,
United Kingdom
|
+$9.63M |
| 3 |
Millennium Management
New York
|
+$7.15M |
| 4 |
Two Sigma Investments
New York
|
+$4.91M |
| 5 |
EF
Empowered Funds
Havertown,
Pennsylvania
|
+$4.15M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GJL
Gendell Jeffrey L
|
-$13.1M |
| 2 |
Hotchkis & Wiley Capital Management
Los Angeles,
California
|
-$7.26M |
| 3 |
First Eagle Investment Management
New York
|
-$5.55M |
| 4 |
D.E. Shaw & Co
New York
|
-$4.98M |
| 5 |
KCM
Kennedy Capital Management
St Louis,
Missouri
|
-$3.86M |
OIS Hedge Fund Activity: Q1 2026 in Review
217 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in Oil States International (OIS) for Q1 2026, worth a combined $631M — up 83% from $345M a quarter earlier.
Buyers outnumbered sellers: 59 funds opened new OIS positions and 19 closed out — a net gain of 40 holders — while 76 added to existing stakes and 57 trimmed.
The largest buyer was Driehaus Capital Management, opening a new position worth an estimated $13.7M. The largest seller was Gendell Jeffrey L, cutting an estimated $13.1M.
- 217 institutional investors held Oil States International (OIS) as of Q1 2026, up from 181 in Q4 2025.
- Funds reported $631M of Oil States International stock for Q1 2026, up 83% quarter-over-quarter.
- 59 funds opened new Oil States International positions in Q1 2026 and 19 closed out, a net change of +40 holders.
- The largest Oil States International buyer in Q1 2026 was Driehaus Capital Management, an estimated $13.7M added.
- The largest Oil States International seller in Q1 2026 was Gendell Jeffrey L, an estimated $13.1M sold.
Based on aggregated 13F filings for Q1 2026.