Group One Trading’s Octave Specialty Group OSG Stock Holding History

Group One Trading’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	$141K	Buy	22,576 +10,628	+89%	+$55.3K	﹤0.01%	4574
2026 Q1	$55.6K	Buy	+11,948	New	+$68.4K	﹤0.01%	5186
2025 Q4	–	Sell	-20,449	Closed	-$171K	–	8039
2025 Q3	$171K	Sell	20,449 -301,275	-94%	-$2.55M	﹤0.01%	4841
2025 Q2	$2.28M	Sell	321,724 -19,744	-6%	-$147K	0.01%	2005
2025 Q1	$2.99M	Buy	341,468 +325,352	+2,019%	+$3.43M	0.01%	1476
2024 Q4	$204K	Buy	16,116 +6,352	+65%	+$76.6K	﹤0.01%	3920
2024 Q3	$109K	Buy	+9,764	New	+$114K	﹤0.01%	4099
2024 Q2	–	Sell	-77,089	Closed	-$1.2M	–	6651
2024 Q1	$1.2M	Sell	77,089 -9,341	-11%	-$147K	﹤0.01%	1917
2023 Q4	$1.42M	Buy	+86,430	New	+$1.2M	﹤0.01%	2141
2023 Q3	–	Sell	-8,956	Closed	-$128K	–	7592
2023 Q2	$128K	Buy	+8,956	New	+$131K	﹤0.01%	4375

Other funds holding OSG

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 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 Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Group One Trading's OSG Position: Q2 2026 in Review

Group One Trading increased its Octave Specialty Group (OSG) stake by 89% in Q2 2026, buying an estimated $55.3K and bringing the position to 22,576 shares worth $141K. The position accounts for ﹤0.01% of the portfolio, ranked #4574.

Group One Trading first reported a position in OSG in Q2 2023 and has held it in 10 quarters since. The position peaked at $2.99M in Q1 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q2 2026.

Group One Trading held 22,576 shares of Octave Specialty Group worth $141K as of Q2 2026.
Group One Trading bought 10,628 Octave Specialty Group shares in Q2 2026, an estimated $55.3K.
Octave Specialty Group made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #4574 holding.
Group One Trading first reported a position in Octave Specialty Group in Q2 2023 and has held it in 10 quarters since.
Group One Trading's Octave Specialty Group position peaked at $2.99M in Q1 2025.
148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q2 2026.

Based on Group One Trading's 13F filing for Q2 2026, filed 14 Aug 2026.