Optiver Holding
OSG

Optiver Holding’s Octave Specialty Group OSG Stock Holding History

Optiver Holding’s Portfolio OSG Stock Details OSG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.22K Sell
196
-136
-41% -$708 ﹤0.01% 2441
2026
Q1 		$1.54K Sell
332
-38
-10% -$218 ﹤0.01% 1946
2025
Q4 		$2.88K Sell
370
-54
-13% -$461 ﹤0.01% 1777
2025
Q3 		$3.54K Buy
+424
New +$3.58K ﹤0.01% 2063

Other funds holding OSG

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
WSL
Western Standard LLC Los Angeles, California $295M AUM 40.98% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1.16B AUM 53.61% 1-Year Est. Return
TAM
Third Avenue Management New York $625M AUM 48.93% 1-Year Est. Return
BCC
Bain Capital Credit Boston, Massachusetts $368M AUM 9.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Optiver Holding's OSG Position: Q2 2026 in Review

Optiver Holding reduced its Octave Specialty Group (OSG) stake by 41% in Q2 2026, selling an estimated $708 and leaving 196 shares worth $1.22K. The position accounts for ﹤0.01% of the portfolio, ranked #2441.

Optiver Holding first reported a position in OSG in Q3 2025 and has held it in 4 quarters since. The position peaked at $3.54K in Q3 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q2 2026.

  • Optiver Holding held 196 shares of Octave Specialty Group worth $1.22K as of Q2 2026.
  • Optiver Holding sold 136 Octave Specialty Group shares in Q2 2026, an estimated $708.
  • Octave Specialty Group made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #2441 holding.
  • Optiver Holding first reported a position in Octave Specialty Group in Q3 2025 and has held it in 4 quarters since.
  • Optiver Holding's Octave Specialty Group position peaked at $3.54K in Q3 2025.
  • 148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.