Jane Street’s ProShares UltraShort Industrials SIJ Stock Holding History

Jane Street’s Portfolio SIJ Stock Details SIJ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$136K	Buy	+6,521	New	+$127K	﹤0.01%	10464
2021 Q3	–	Sell	-3,237	Closed	-$188K	–	10639
2021 Q2	$188K	Buy	+3,237	New	+$194K	﹤0.01%	8879
2019 Q1	–	Sell	-972	Closed	-$314K	–	5572
2018 Q4	$314K	Sell	972 -218	-18%	-$61K	﹤0.01%	4013
2018 Q3	$272K	Buy	1,190 +179	+18%	+$43.4K	﹤0.01%	4332
2018 Q2	$273K	Sell	1,011 -398	-28%	-$105K	﹤0.01%	4225
2018 Q1	$380K	Sell	1,409 -95	-6%	-$24.4K	﹤0.01%	3769
2017 Q4	$405K	Buy	+1,504	New	+$436K	﹤0.01%	3432

Other funds holding SIJ

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Jane Street's SIJ Position: Q1 2026 in Review

Jane Street opened a new position in ProShares UltraShort Industrials (SIJ) in Q1 2026: 6,521 shares worth $136K. The stake represents ﹤0.01% of the portfolio and ranks #10464 among its holdings. This is a return to the name: Jane Street previously reported a position in SIJ as recently as Q2 2021.

Jane Street first reported a position in SIJ in Q4 2017 and has held it in 7 quarters since. The position peaked at $405K in Q4 2017. 3 funds tracked by Wall St. Rank hold SIJ as of Q1 2026.

Jane Street held 6,521 shares of ProShares UltraShort Industrials worth $136K as of Q1 2026.
ProShares UltraShort Industrials was a new Jane Street position in Q1 2026.
ProShares UltraShort Industrials made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #10464 holding.
Jane Street first reported a position in ProShares UltraShort Industrials in Q4 2017 and has held it in 7 quarters since.
Jane Street's ProShares UltraShort Industrials position peaked at $405K in Q4 2017.
3 funds tracked by Wall St. Rank held ProShares UltraShort Industrials as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.