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	$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 $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.