Jane Street
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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 		$159K Buy
57,696
+46,986
+439% +$146K ﹤0.01% 10341
2025
Q4 		$33.6K Buy
+10,710
New +$33.8K ﹤0.01% 10622
2025
Q1 		– Sell
-24,283
Closed -$65.6K – 9297
2024
Q4 		$65.6K Buy
+24,283
New +$75.9K ﹤0.01% 8906
2024
Q2 		– Sell
-14,418
Closed -$42.7K – 9242
2024
Q1 		$42.7K Buy
+14,418
New +$51.7K ﹤0.01% 8777
2023
Q1 		– Sell
-42,581
Closed -$86.9K – 8911
2022
Q4 		$86.9K Buy
+42,581
New +$110K ﹤0.01% 8172
2019
Q2 		– Sell
-11,116
Closed -$56K – 5058
2019
Q1 		$56K Buy
+11,116
New +$70.7K ﹤0.01% 4822

Other funds holding ACIU

BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Marshall Wace
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.