Jane Street’s Octave Specialty Group OSG Stock Holding History

Jane Street’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 Q1	–	Sell	-857,100	Closed	-$6.67M	–	11472
2025 Q4	$6.67M	Sell	857,100 -6,700	-0.8%	-$57.3K	﹤0.01%	2817
2025 Q3	$7.2M	Buy	863,800 +807,800	+1,443%	+$6.82M	﹤0.01%	2870
2025 Q2	$398K	Sell	56,000 -96,100	-63%	-$716K	﹤0.01%	7358
2025 Q1	$1.33M	Sell	152,100 -218,200	-59%	-$2.3M	﹤0.01%	5050
2024 Q4	$4.68M	Buy	370,300 +95,800	+35%	+$1.15M	﹤0.01%	2751
2024 Q3	$3.08M	Buy	+274,500	New	+$3.21M	﹤0.01%	3678
2022 Q2	–	Sell	-42,400	Closed	-$441K	–	9573
2022 Q1	$441K	Buy	42,400 +20,800	+96%	+$282K	﹤0.01%	7714
2021 Q4	$347K	Buy	+21,600	New	+$339K	﹤0.01%	7915
2021 Q3	–	Sell	-13,800	Closed	-$216K	–	9858
2021 Q2	$216K	Sell	13,800 -39,600	-74%	-$636K	﹤0.01%	8688
2021 Q1	$894K	Sell	53,400 -16,600	-24%	-$271K	﹤0.01%	5667
2020 Q4	$1.08M	Sell	70,000 -26,900	-28%	-$396K	﹤0.01%	4528
2020 Q3	$1.24M	Buy	+96,900	New	+$1.25M	﹤0.01%	3738

Other funds holding OSG

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

WSL

Western Standard LLC Los Angeles, California $190M AUM 40.88% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

PGCM

Prescott Group Capital Management Tulsa, Oklahoma $1B AUM 51.95% 1-Year Est. Return

WHCM

Wolf Hill Capital Management Greenwich, Connecticut $1.03B AUM 80.44% 1-Year Est. Return

GJL

Gendell Jeffrey L $7.34B AUM 183.72% 1-Year Est. Return

TAM

Third Avenue Management New York $616M AUM 45.6% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

BCC

Bain Capital Credit Boston, Massachusetts $303M AUM 15.47% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Jane Street's OSG Position: Q1 2026 in Review

Jane Street reduced its Octave Specialty Group (OSG) stake by 50% in Q1 2026, selling an estimated $4.33M and leaving 764,384 shares worth $3.55M. The position accounts for ﹤0.01% of the portfolio, ranked #4048.

Jane Street first reported a position in OSG in Q4 2016 and has held it in 21 quarters since. The position peaked at $11.8M in Q4 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q1 2026.

Jane Street held 764,384 shares of Octave Specialty Group worth $3.55M as of Q1 2026.
Jane Street sold 756,270 Octave Specialty Group shares in Q1 2026, an estimated $4.33M.
Octave Specialty Group made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #4048 holding.
Jane Street first reported a position in Octave Specialty Group in Q4 2016 and has held it in 21 quarters since.
Jane Street's Octave Specialty Group position peaked at $11.8M in Q4 2025.
148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.