Jane Street’s AC Immune ACIU Stock Holding History

Jane Street’s Portfolio ACIU Stock Details ACIU Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-10,500	Closed	-$33K	–	11410
2025 Q4	$33K	Buy	+10,500	New	+$33.1K	﹤0.01%	10625

Other funds holding ACIU

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

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

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

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

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

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Jane Street's ACIU Position: Q1 2026 in Review

Jane Street increased its AC Immune (ACIU) stake by 439% in Q1 2026, buying an estimated $146K and bringing the position to 57,696 shares worth $159K. The position accounts for ﹤0.01% of the portfolio, ranked #10341.

Jane Street first reported a position in ACIU in Q1 2019 and has held it in 6 quarters since. 46 funds tracked by Wall St. Rank hold ACIU as of Q1 2026.

Jane Street held 57,696 shares of AC Immune worth $159K as of Q1 2026.
Jane Street bought 46,986 AC Immune shares in Q1 2026, an estimated $146K.
AC Immune made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #10341 holding.
Jane Street first reported a position in AC Immune in Q1 2019 and has held it in 6 quarters since.
46 funds tracked by Wall St. Rank held AC Immune as of Q1 2026.

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