XTX Topco’s Octave Specialty Group OSG Stock Holding History

XTX Topco’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	$116K	Sell	18,657 -98,254	-84%	-$512K	﹤0.01%	3477
2026 Q1	$544K	Buy	116,911 +85,853	+276%	+$492K	0.01%	1978
2025 Q4	$242K	Buy	+31,058	New	+$265K	0.01%	2258
2025 Q3	–	Sell	-38,524	Closed	-$274K	–	2519
2025 Q2	$274K	Sell	38,524 -81,083	-68%	-$604K	0.01%	1504
2025 Q1	$1.05M	Buy	119,607 +91,547	+326%	+$964K	0.05%	535
2024 Q4	$355K	Buy	28,060 +12,680	+82%	+$153K	0.03%	1071
2024 Q3	$172K	Buy	+15,380	New	+$180K	0.01%	1489
2023 Q4	–	Sell	-11,655	Closed	-$141K	–	1550
2023 Q3	$141K	Buy	+11,655	New	+$157K	0.02%	1118
2023 Q1	–	Sell	-17,118	Closed	-$299K	–	1243
2022 Q4	$299K	Buy	+17,118	New	+$254K	0.06%	586
2021 Q3	–	Sell	-12,461	Closed	-$195K	–	668
2021 Q2	$195K	Buy	+12,461	New	+$200K	0.07%	572

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

XTX Topco's OSG Position: Q2 2026 in Review

XTX Topco reduced its Octave Specialty Group (OSG) stake by 84% in Q2 2026, selling an estimated $512K and leaving 18,657 shares worth $116K. The position accounts for ﹤0.01% of the portfolio, ranked #3477.

XTX Topco first reported a position in OSG in Q2 2021 and has held it in 10 quarters since. The position peaked at $1.05M in Q1 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q2 2026.

XTX Topco held 18,657 shares of Octave Specialty Group worth $116K as of Q2 2026.
XTX Topco sold 98,254 Octave Specialty Group shares in Q2 2026, an estimated $512K.
Octave Specialty Group made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #3477 holding.
XTX Topco first reported a position in Octave Specialty Group in Q2 2021 and has held it in 10 quarters since.
XTX Topco's Octave Specialty Group position peaked at $1.05M in Q1 2025.
148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.