Octave Specialty Group
OSG
148 hedge funds and large institutions have $188M invested in Octave Specialty Group in 2026 Q2 according to their latest regulatory filings, with 37 funds opening new positions, 51 increasing their positions, 40 reducing their positions, and 35 closing their positions.
28% more repeat investments, than reductions
Existing positions increased: 51 | Existing positions reduced: 40
24% more capital invested
Capital invested by funds: $151M → $188M (+$36.2M)
6% more first-time investments, than exits
New positions opened: 37 | Existing positions closed: 35
0% more funds holding
Funds holding: 148 → 148 (0)
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
5.56% less ownership
Funds ownership: 72.39% → 66.82% (-5.6%)
64% less call options, than puts
Call options by funds: $2.75M | Put options by funds: $7.58M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$3.41M |
| 2 |
ZIM
Zacks Investment Management
Chicago,
Illinois
|
+$3.07M |
| 3 |
Morgan Stanley
New York
|
+$1.74M |
| 4 |
ACA
AYAL Capital Advisors
Toronto,
Ontario, Canada
|
+$1.46M |
| 5 |
Goldman Sachs
New York
|
+$1.12M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WHCM
Wolf Hill Capital Management
Greenwich,
Connecticut
|
-$5.16M |
| 2 |
GJL
Gendell Jeffrey L
|
-$4.79M |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
-$3.09M |
| 4 |
Jane Street
New York
|
-$2.53M |
| 5 |
Marshall Wace
London,
United Kingdom
|
-$2.41M |
OSG Hedge Fund Activity: Q2 2026 in Review
148 institutional investors reported a position in Octave Specialty Group (OSG) for Q2 2026, worth a combined $188M — up 24% from $151M a quarter earlier.
Buyers outnumbered sellers: 37 funds opened new OSG positions and 35 closed out — a net gain of 2 holders — while 51 added to existing stakes and 40 trimmed.
The largest buyer was BlackRock, adding an estimated $3.41M. The largest seller was Wolf Hill Capital Management, cutting an estimated $5.16M.
- 148 institutional investors held Octave Specialty Group (OSG) as of Q2 2026, unchanged from Q1 2026.
- Funds reported $188M of Octave Specialty Group stock for Q2 2026, up 24% quarter-over-quarter.
- 37 funds opened new Octave Specialty Group positions in Q2 2026 and 35 closed out, a net change of +2 holders.
- The largest Octave Specialty Group buyer in Q2 2026 was BlackRock, an estimated $3.41M added.
- The largest Octave Specialty Group seller in Q2 2026 was Wolf Hill Capital Management, an estimated $5.16M sold.
Based on aggregated 13F filings for Q2 2026.