Jane Street’s Tradr 2X Long Innovation ETF TARK Stock Holding History

Jane Street’s Portfolio TARK Stock Details TARK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-2,500	Closed	-$205K	–	12354
2025 Q3	$205K	Buy	+2,500	New	+$164K	﹤0.01%	9635
2025 Q1	–	Sell	-6,800	Closed	-$297K	–	10581
2024 Q4	$297K	Sell	6,800 -2,000	-23%	-$81.1K	﹤0.01%	7757
2024 Q3	$286K	Buy	+8,800	New	+$264K	﹤0.01%	8107

Other funds holding TARK

Optiver Holding Amsterdam, Netherlands $289B AUM 33.63% 1-Year Est. Return

Simplex Trading Chicago, Illinois $149B AUM 62.07% 1-Year Est. Return

Jane Street's TARK Position: Q3 2025 in Review

Jane Street sold out of Tradr 2X Long Innovation ETF (TARK) in Q3 2025, closing a stake of 9,278 shares — an estimated $607K sold.

Jane Street first reported a position in TARK in Q4 2022 and held it in 5 quarters. The position peaked at $1.25M in Q1 2023. 8 funds tracked by Wall St. Rank hold TARK as of Q3 2025.

Jane Street reported no remaining Tradr 2X Long Innovation ETF position as of Q3 2025 after selling out during the quarter.
Jane Street sold 9,278 Tradr 2X Long Innovation ETF shares in Q3 2025, an estimated $607K.
Jane Street first reported a position in Tradr 2X Long Innovation ETF in Q4 2022 and held it in 5 quarters.
Jane Street's Tradr 2X Long Innovation ETF position peaked at $1.25M in Q1 2023.
8 funds tracked by Wall St. Rank held Tradr 2X Long Innovation ETF as of Q3 2025.

Based on Jane Street's 13F filing for Q3 2025, filed 14 Nov 2025.