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 Q3	–	Sell	-9,278	Closed	-$607K	–	11757
2025 Q2	$523K	Buy	+9,278	New	+$337K	﹤0.01%	6836
2024 Q4	–	Sell	-7,570	Closed	-$307K	–	10561
2024 Q3	$246K	Sell	7,570 -16,004	-68%	-$480K	﹤0.01%	8348
2024 Q2	$694K	Buy	+23,574	New	+$733K	﹤0.01%	6462
2023 Q2	–	Sell	-38,914	Closed	-$1.25M	–	9550
2023 Q1	$1.25M	Buy	38,914 +20,672	+113%	+$627K	﹤0.01%	4605
2022 Q4	$380K	Buy	+18,242	New	+$531K	﹤0.01%	6616

Other funds holding TARK

Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return

Simplex Trading Chicago, Illinois $184B AUM 51.71% 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.