Octave Specialty Group
OSG
175 hedge funds and large institutions have $328M invested in Octave Specialty Group in 2025 Q1 according to their latest regulatory filings, with 34 funds opening new positions, 53 increasing their positions, 60 reducing their positions, and 37 closing their positions.
840% more call options, than puts
Call options by funds: $84.6M | Put options by funds: $8.99M
100% more funds holding in top 10
Funds holding in top 10: 2 → 4 (+2)
8% less first-time investments, than exits
New positions opened: 34 | Existing positions closed: 37
3% less funds holding
Funds holding: 180 → 175 (-5)
6.26% less ownership
Funds ownership: 87.46% → 81.2% (-6.3%)
12% less repeat investments, than reductions
Existing positions increased: 53 | Existing positions reduced: 60
37% less capital invested
Capital invested by funds: $522M → $328M (-$195M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$7.62M |
| 2 |
SSA
Schonfeld Strategic Advisors
New York
|
+$5.5M |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$4.48M |
| 4 |
Jane Street
New York
|
+$4.3M |
| 5 |
Morgan Stanley
New York
|
+$3.79M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$32.3M |
| 2 |
RP
Repertoire Partners
New York
|
-$10.4M |
| 3 |
State Street
Boston,
Massachusetts
|
-$8.02M |
| 4 |
PCM
Portolan Capital Management
Boston,
Massachusetts
|
-$7.46M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
-$5.85M |
OSG Hedge Fund Activity: Q1 2025 in Review
175 of the 7,468 institutional investors tracked by Wall St. Rank reported a position in Octave Specialty Group (OSG) for Q1 2025, worth a combined $328M — down 37% from $522M a quarter earlier.
Sellers outnumbered buyers: 37 funds closed out of OSG and 34 opened new positions — a net loss of 3 holders — while 60 trimmed existing stakes and 53 added.
The largest buyer was Citadel Advisors, adding an estimated $7.62M. The largest seller was BlackRock, cutting an estimated $32.3M.
- 175 institutional investors held Octave Specialty Group (OSG) as of Q1 2025, down from 180 in Q4 2024.
- Funds reported $328M of Octave Specialty Group stock for Q1 2025, down 37% quarter-over-quarter.
- 34 funds opened new Octave Specialty Group positions in Q1 2025 and 37 closed out, a net change of -3 holders.
- The largest Octave Specialty Group buyer in Q1 2025 was Citadel Advisors, an estimated $7.62M added.
- The largest Octave Specialty Group seller in Q1 2025 was BlackRock, an estimated $32.3M sold.
Based on aggregated 13F filings for Q1 2025.