Equibles

ACIU

AC Immune SA

Company with tickers: ACIU

CIK
1651625
CUSIP
H00263105
Shares Outstanding
101,773,573
13F Activity (30d)
43 filings 41 filers
Holders: 47
Total Value: $70,050,596
Total Shares: 25,472,951

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 47 13F filers · Δ vs Dec 31, 2025
Top Holder
77.8%
Jun 2023 → Mar 2026 · range 45.6% – 80.8%
+1.4 pts
Top 5
89.4%
Jun 2023 → Mar 2026 · range 84.7% – 93.0%
+1.0 pts
Top 10
95.9%
Jun 2023 → Mar 2026 · range 95.2% – 98.3%
+0.8 pts
HHI
6,101
Jun 2023 → Mar 2026 · range 2,640 – 6,571
Highly concentrated +209

Quarterly Activity

vs Dec 31, 2025
New
9
Increased
13
Decreased
17
Sold Out
3
Unchanged
8
Holder count: +6
Institutional value: -14.0%
Shares held: -1.8%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega DIMENSIONAL FUND ADVISORS LP +176,701 390,165
Mega CITADEL ADVISORS LLC +165,182 298,233
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP +30,035 405,658
Mega BlackRock, Inc. +22,109 524,278
Mega JANE STREET GROUP, LLC +15,086 57,696

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large ACADIAN ASSET MANAGEMENT LLC −367,790 96,907
Mega MILLENNIUM MANAGEMENT LLC −140,685 792,657
Large Point72 Asset Management, L.P. −119,545 293,200
Mega UBS Group AG −92,720 101,629
Large MARSHALL WACE, LLP −55,251 131,458

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Large HRT FINANCIAL LP 17,276 $47,509
Mid XTX Topco Ltd 14,304 $39,336
Mid GSA CAPITAL PARTNERS LLP 11,530 $31,707
Mid Jump Financial, LLC 11,125 $30,593
Mid SIMPLEX TRADING, LLC 6,620 $18,205

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Large SEI INVESTMENTS CO 15,884 $49,875
Mid Leonteq Securities AG 3,000 $9,420
Mid SBI Securities Co., Ltd. 547 $1,717
Filter: New 9 Increased 13 Reduced 17 Sold out 3 Unchanged 8
Showing 51 of 51
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid BVF INC/IL $54,511,699 77.82% 19,822,436
Mega WELLS FARGO & COMPANY/MN $2,761,781 3.94% 1,004,284
Mega MILLENNIUM MANAGEMENT LLC $2,179,806 3.11% 792,657
Large RENAISSANCE TECHNOLOGIES LLC $1,717,009 2.45% 624,367
Mega BlackRock, Inc. $1,441,763 2.06% 524,278
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $1,115,559 1.59% 405,658
Mega DIMENSIONAL FUND ADVISORS LP $1,072,952 1.53% 390,165
Large Point72 Asset Management, L.P. $806,300 1.15% 293,200
Mega NORTHERN TRUST CORP Bank $765,910 1.09% 278,513
Mega CITADEL ADVISORS LLC $734,890 1.05% 267,233
Large MARSHALL WACE, LLP $361,509 0.52% 131,458
Micro Dauntless Investment Group, LLC $295,594 0.42% 107,489
Mega UBS Group AG $279,479 0.40% 101,629
Large ACADIAN ASSET MANAGEMENT LLC $266,494 0.38% 96,907
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $245,470 0.35% 89,262
Mega MORGAN STANLEY $245,444 0.35% 89,253
Mega GEODE CAPITAL MANAGEMENT, LLC $174,902 0.25% 63,601
Mega JANE STREET GROUP, LLC $158,664 0.23% 57,696
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $117,975 0.17% 42,900
Mega TWO SIGMA INVESTMENTS, LP $107,500 0.15% 39,091
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $70,400 0.10% 25,600
Mega GOLDMAN SACHS GROUP INC $59,488 0.08% 21,632
Mega CITADEL ADVISORS LLC $57,475 0.08% 20,900
Mid China Universal Asset Management Co., Ltd. $49,093 0.07% 17,852
Mega BANK OF AMERICA CORP /DE/ Bank $47,951 0.07% 17,437
Large HRT FINANCIAL LP $47,509 0.07% 17,276
Mid XTX Topco Ltd $39,336 0.06% 14,304
Mid GSA CAPITAL PARTNERS LLP $31,707 0.05% 11,530
Mid Jump Financial, LLC $30,593 0.04% 11,125
Mega CITADEL ADVISORS LLC $27,775 0.04% 10,100
Mid Quinn Opportunity Partners LLC $27,775 0.04% 10,100
Small Silverberg Bernstein Capital Management LLC $27,500 0.04% 10,000
Mid EFG International AG $27,225 0.04% 9,900
Mega JPMORGAN CHASE & CO $21,010 0.03% 7,640
Mid Banque Cantonale Vaudoise $19,307 0.03% 7,021
Mid Tower Research Capital LLC (TRC) $19,274 0.03% 7,009
Mid SIMPLEX TRADING, LLC $18,205 0.03% 6,620
Mega BARCLAYS PLC $15,924 0.02% 5,791
Large Mirae Asset Global Investments Co., Ltd. $14,429 0.02% 5,247
Mega CITIGROUP INC $7,730 0.01% 2,811
Mega BNP PARIBAS ARBITRAGE, SA $6,627 0.01% 2,410
Mid GF FUND MANAGEMENT CO. LTD. $6,165 0.01% 2,242
Small Forum Finance Group S.A. $5,500 0.01% 2,000
Mega PNC FINANCIAL SERVICES GROUP, INC. $2,750 0.00% 1,000
Small Activest Wealth Management $2,750 0.00% 1,000
Large Rockefeller Capital Management L.P. $2,750 0.00% 1,000
Mega ROYAL BANK OF CANADA Bank $2,365 0.00% 860
Large OSAIC HOLDINGS, INC. $607 0.00% 221
Small Strengthening Families & Communities, LLC $550 0.00% 200
Mid Farther Finance Advisors, LLC $118 0.00% 43
Small Caitong International Asset Management Co., Ltd $8 0.00% 3

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