Oceaneering
367 hedge funds and large institutions have $3.61B invested in Oceaneering in 2026 Q1 according to their latest regulatory filings, with 91 funds opening new positions, 131 increasing their positions, 104 reducing their positions, and 33 closing their positions.
1,007% more call options, than puts
Call options by funds: $17.5M | Put options by funds: $1.58M
176% more first-time investments, than exits
New positions opened: 91 | Existing positions closed: 33
150% more funds holding in top 10
Funds holding in top 10: 2 → 5 (+3)
50% more capital invested
Capital invested by funds: $2.41B → $3.61B (+$1.2B)
26% more repeat investments, than reductions
Existing positions increased: 131 | Existing positions reduced: 104
17% more funds holding
Funds holding: 313 → 367 (+54)
2.01% more ownership
Funds ownership: 100.33% → 102.35% (+2%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Barrow, Hanley, Mewhinney & Strauss
Dallas,
Texas
|
+$46M |
| 2 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$38.6M |
| 3 |
Boston Partners
Boston,
Massachusetts
|
+$27.7M |
| 4 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$22M |
| 5 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$18.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Brown Advisory
Baltimore,
Maryland
|
-$53M |
| 2 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$18.7M |
| 3 |
Point72 Asset Management
Stamford,
Connecticut
|
-$16.8M |
| 4 |
MSIIA
Morgan Stanley Institutional Investment Advisors
Greenwood Village,
Colorado
|
-$16M |
| 5 |
GF
Greenhouse Funds
Baltimore,
Maryland
|
-$14.1M |
OII Hedge Fund Activity: Q1 2026 in Review
367 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in Oceaneering (OII) for Q1 2026, worth a combined $3.61B — up 50% from $2.41B a quarter earlier.
Buyers outnumbered sellers: 91 funds opened new OII positions and 33 closed out — a net gain of 58 holders — while 131 added to existing stakes and 104 trimmed.
The largest buyer was Barrow, Hanley, Mewhinney & Strauss, opening a new position worth an estimated $46M. The largest seller was Brown Advisory, cutting an estimated $53M.
- 367 institutional investors held Oceaneering (OII) as of Q1 2026, up from 313 in Q4 2025.
- Funds reported $3.61B of Oceaneering stock for Q1 2026, up 50% quarter-over-quarter.
- 91 funds opened new Oceaneering positions in Q1 2026 and 33 closed out, a net change of +58 holders.
- The largest Oceaneering buyer in Q1 2026 was Barrow, Hanley, Mewhinney & Strauss, an estimated $46M added.
- The largest Oceaneering seller in Q1 2026 was Brown Advisory, an estimated $53M sold.
Based on aggregated 13F filings for Q1 2026.