Octave Specialty Group
OSG
146 hedge funds and large institutions have $262M invested in Octave Specialty Group in 2025 Q2 according to their latest regulatory filings, with 31 funds opening new positions, 47 increasing their positions, 50 reducing their positions, and 59 closing their positions.
1,486% more call options, than puts
Call options by funds: $69.4M | Put options by funds: $4.38M
50% more funds holding in top 10
Funds holding in top 10: 4 → 6 (+2)
6% less repeat investments, than reductions
Existing positions increased: 47 | Existing positions reduced: 50
1.58% less ownership
Funds ownership: 81.2% → 79.62% (-1.6%)
17% less funds holding
Funds holding: 175 → 146 (-29)
20% less capital invested
Capital invested by funds: $328M → $262M (-$65.1M)
47% less first-time investments, than exits
New positions opened: 31 | Existing positions closed: 59
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CGIC
Continental General Insurance Company
Austin,
Texas
|
+$9.07M |
| 2 |
GJL
Gendell Jeffrey L
|
+$4.44M |
| 3 |
Millennium Management
New York
|
+$3.63M |
| 4 |
Marshall Wace
London,
United Kingdom
|
+$3.3M |
| 5 |
PGCM
Prescott Group Capital Management
Tulsa,
Oklahoma
|
+$3.23M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WSL
Western Standard LLC
Los Angeles,
California
|
-$6.12M |
| 2 |
RP
Repertoire Partners
New York
|
-$3.37M |
| 3 |
American Century Companies
Kansas City,
Missouri
|
-$3.11M |
| 4 |
Morgan Stanley
New York
|
-$2.98M |
| 5 |
BlackRock
New York
|
-$2.28M |
OSG Hedge Fund Activity: Q2 2025 in Review
146 of the 7,609 institutional investors tracked by Wall St. Rank reported a position in Octave Specialty Group (OSG) for Q2 2025, worth a combined $262M — down 20% from $328M a quarter earlier.
Sellers outnumbered buyers: 59 funds closed out of OSG and 31 opened new positions — a net loss of 28 holders — while 50 trimmed existing stakes and 47 added.
The largest buyer was Continental General Insurance Company, opening a new position worth an estimated $9.07M. The largest seller was Western Standard LLC, exiting entirely with an estimated $6.12M sold.
- 146 institutional investors held Octave Specialty Group (OSG) as of Q2 2025, down from 175 in Q1 2025.
- Funds reported $262M of Octave Specialty Group stock for Q2 2025, down 20% quarter-over-quarter.
- 31 funds opened new Octave Specialty Group positions in Q2 2025 and 59 closed out, a net change of -28 holders.
- The largest Octave Specialty Group buyer in Q2 2025 was Continental General Insurance Company, an estimated $9.07M added.
- The largest Octave Specialty Group seller in Q2 2025 was Western Standard LLC, an estimated $6.12M sold.
Based on aggregated 13F filings for Q2 2025.