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
2026 Q1	–	Sell	-53,400	Closed	-$2.59M	–	12950
2025 Q4	$2.59M	Buy	53,400 +11,100	+26%	+$799K	﹤0.01%	4318
2025 Q3	$3.47M	Buy	42,300 +29,400	+228%	+$1.92M	﹤0.01%	3989
2025 Q2	$727K	Sell	12,900 -34,600	-73%	-$1.26M	﹤0.01%	6225
2025 Q1	$1.35M	Buy	47,500 +3,600	+8%	+$157K	﹤0.01%	5021
2024 Q4	$1.91M	Buy	43,900 +32,500	+285%	+$1.32M	﹤0.01%	4181
2024 Q3	$370K	Buy	+11,400	New	+$342K	﹤0.01%	7697

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.