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 $3.91B AUM 304.52% 1-Year Est. Return

Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

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

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Jane Street's ACIU Position: Q2 2026 in Review

Jane Street reduced its AC Immune (ACIU) stake by 66% in Q2 2026, selling an estimated $105K and leaving 19,475 shares worth $46.4K. The position accounts for ﹤0.01% of the portfolio, ranked #10968.

Jane Street first reported a position in ACIU in Q1 2019 and has held it in 7 quarters since. The position peaked at $159K in Q1 2026. 43 funds tracked by Wall St. Rank hold ACIU as of Q2 2026.

Jane Street held 19,475 shares of AC Immune worth $46.4K as of Q2 2026.
Jane Street sold 38,221 AC Immune shares in Q2 2026, an estimated $105K.
AC Immune made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10968 holding.
Jane Street first reported a position in AC Immune in Q1 2019 and has held it in 7 quarters since.
Jane Street's AC Immune position peaked at $159K in Q1 2026.
43 funds tracked by Wall St. Rank held AC Immune as of Q2 2026.

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