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 Q2	$99.2K	Sell	15,900 -200	-1%	-$1.04K	﹤0.01%	10600
2026 Q1	$74.9K	Sell	16,100 -33,700	-68%	-$193K	﹤0.01%	10788
2025 Q4	$387K	Sell	49,800 -75,000	-60%	-$641K	﹤0.01%	8264
2025 Q3	$1.04M	Buy	124,800 +112,500	+915%	+$950K	﹤0.01%	6230
2025 Q2	$87.3K	Sell	12,300 -111,900	-90%	-$833K	﹤0.01%	9008
2025 Q1	$1.09M	Buy	124,200 +37,000	+42%	+$390K	﹤0.01%	5403
2024 Q4	$1.1M	Buy	+87,200	New	+$1.05M	﹤0.01%	5191
2022 Q2	–	Sell	-90,000	Closed	-$936K	–	9574
2022 Q1	$936K	Buy	90,000 +38,100	+73%	+$516K	﹤0.01%	6272
2021 Q4	$833K	Buy	+51,900	New	+$816K	﹤0.01%	6273
2021 Q2	–	Sell	-54,900	Closed	-$919K	–	9713
2021 Q1	$919K	Buy	54,900 +39,300	+252%	+$642K	﹤0.01%	5617
2020 Q4	$240K	Sell	15,600 -8,700	-36%	-$128K	﹤0.01%	6723
2020 Q3	$310K	Buy	+24,300	New	+$313K	﹤0.01%	5833

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

Jane Street's OSG Position: Q2 2026 in Review

Jane Street reduced its Octave Specialty Group (OSG) stake by 64% in Q2 2026, selling an estimated $2.53M and leaving 278,731 shares worth $1.74M. The position accounts for ﹤0.01% of the portfolio, ranked #5442.

Jane Street first reported a position in OSG in Q4 2016 and has held it in 22 quarters since. The position peaked at $11.8M in Q4 2025. 147 funds tracked by Wall St. Rank hold OSG as of Q2 2026.

Jane Street held 278,731 shares of Octave Specialty Group worth $1.74M as of Q2 2026.
Jane Street sold 485,653 Octave Specialty Group shares in Q2 2026, an estimated $2.53M.
Octave Specialty Group made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #5442 holding.
Jane Street first reported a position in Octave Specialty Group in Q4 2016 and has held it in 22 quarters since.
Jane Street's Octave Specialty Group position peaked at $11.8M in Q4 2025.
147 funds tracked by Wall St. Rank held Octave Specialty Group as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.