Jane Street’s ProShares UltraPro Short MidCap400 SMDD Stock Holding History

Jane Street’s Portfolio SMDD Stock Details SMDD Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-12,433	Closed	-$193K	–	11688
2025 Q2	$193K	Buy	+12,433	New	+$239K	﹤0.01%	8573
2025 Q1	–	Sell	-5,783	Closed	-$103K	–	10522
2024 Q4	$103K	Buy	+5,783	New	+$97.5K	﹤0.01%	8751

Other funds holding SMDD

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Jane Street's SMDD Position: Q3 2025 in Review

Jane Street sold out of ProShares UltraPro Short MidCap400 (SMDD) in Q3 2025, closing a stake of 12,433 shares — an estimated $193K sold.

Jane Street first reported a position in SMDD in Q4 2024 and held it in 2 quarters. The position peaked at $193K in Q2 2025. 1 fund tracked by Wall St. Rank holds SMDD as of Q3 2025.

Jane Street reported no remaining ProShares UltraPro Short MidCap400 position as of Q3 2025 after selling out during the quarter.
Jane Street sold 12,433 ProShares UltraPro Short MidCap400 shares in Q3 2025, an estimated $193K.
Jane Street first reported a position in ProShares UltraPro Short MidCap400 in Q4 2024 and held it in 2 quarters.
Jane Street's ProShares UltraPro Short MidCap400 position peaked at $193K in Q2 2025.
1 fund tracked by Wall St. Rank held ProShares UltraPro Short MidCap400 as of Q3 2025.

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