Jane Street’s ProShares Ultra Nasdaq Cybersecurity ETF UCYB Stock Holding History

Jane Street’s Portfolio UCYB Stock Details UCYB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$248K	Buy	+3,251	New	+$188K	﹤0.01%	9617
2026 Q1	–	Sell	-4,497	Closed	-$237K	–	13034
2025 Q4	$237K	Buy	4,497 +147	+3%	+$8.64K	﹤0.01%	9360
2025 Q3	$267K	Sell	4,350 -492	-10%	-$28.9K	﹤0.01%	9138
2025 Q2	$302K	Buy	+4,842	New	+$253K	﹤0.01%	7856
2022 Q2	–	Sell	-5,421	Closed	-$273K	–	10927
2022 Q1	$273K	Buy	+5,421	New	+$238K	﹤0.01%	8537

Other funds holding UCYB

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Jane Street's UCYB Position: Q2 2026 in Review

Jane Street opened a new position in ProShares Ultra Nasdaq Cybersecurity ETF (UCYB) in Q2 2026: 3,251 shares worth $248K. The stake represents ﹤0.01% of the portfolio and ranks #9617 among its holdings. This is a return to the name: Jane Street previously reported a position in UCYB as recently as Q4 2025.

Jane Street first reported a position in UCYB in Q1 2022 and has held it in 5 quarters since. The position peaked at $302K in Q2 2025. 3 funds tracked by Wall St. Rank hold UCYB as of Q2 2026.

Jane Street held 3,251 shares of ProShares Ultra Nasdaq Cybersecurity ETF worth $248K as of Q2 2026.
ProShares Ultra Nasdaq Cybersecurity ETF was a new Jane Street position in Q2 2026.
ProShares Ultra Nasdaq Cybersecurity ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #9617 holding.
Jane Street first reported a position in ProShares Ultra Nasdaq Cybersecurity ETF in Q1 2022 and has held it in 5 quarters since.
Jane Street's ProShares Ultra Nasdaq Cybersecurity ETF position peaked at $302K in Q2 2025.
3 funds tracked by Wall St. Rank held ProShares Ultra Nasdaq Cybersecurity ETF as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.