Jane Street’s Ultralife ULBI Stock Holding History

Jane Street’s Portfolio ULBI Stock Details ULBI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-13,145	Closed	-$75.2K	–	13044
2025 Q4	$75.2K	Buy	+13,145	New	+$81.1K	﹤0.01%	10333
2024 Q4	–	Sell	-18,322	Closed	-$166K	–	10643
2024 Q3	$166K	Buy	+18,322	New	+$189K	﹤0.01%	8767
2024 Q2	–	Sell	-35,740	Closed	-$315K	–	10221
2024 Q1	$315K	Buy	35,740 +20,814	+139%	+$169K	﹤0.01%	7488
2023 Q4	$102K	Sell	14,926 -4,883	-25%	-$40.1K	﹤0.01%	8571
2023 Q3	$193K	Buy	+19,809	New	+$159K	﹤0.01%	7645

Other funds holding ULBI

VWA

Visionary Wealth Advisors O'fallon, Illinois $2.26B AUM 19.48% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Janney Montgomery Scott Philadelphia, Pennsylvania $40.4B AUM 21.2% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

THC

Truffle Hound Capital Bethesda, Maryland $386M AUM 57.88% 1-Year Est. Return

RBF Capital San Francisco, California $2.05B AUM 29.64% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $43.4B AUM 51.29% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return

Jane Street's ULBI Position: Q1 2026 in Review

Jane Street sold out of Ultralife (ULBI) in Q1 2026, closing a stake of 13,145 shares — an estimated $75.2K sold.

Jane Street first reported a position in ULBI in Q3 2023 and held it in 5 quarters. The position peaked at $315K in Q1 2024. 50 funds tracked by Wall St. Rank hold ULBI as of Q1 2026.

Jane Street reported no remaining Ultralife position as of Q1 2026 after selling out during the quarter.
Jane Street sold 13,145 Ultralife shares in Q1 2026, an estimated $75.2K.
Jane Street first reported a position in Ultralife in Q3 2023 and held it in 5 quarters.
Jane Street's Ultralife position peaked at $315K in Q1 2024.
50 funds tracked by Wall St. Rank held Ultralife as of Q1 2026.

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