Security key
H00263105
- Security type / class
- Equity / SHS
- Total 13F shares
- 24,469,618
- Total 13F value
- $58,242,750
- Share change
- -610,822
- Put/Call ratio
- 220%
- SEC-reported price per share
- $2.38
- Number of holders
- 43
- Value change
- -$1,705,090
- Number of buys
- 15
- Number of sells
- 25
Open additional details 1 more signal available
Report period
Q2 2026
Institutions
43
Top holders
10
ACIU full security history
Ownership snapshot
Full 13F holder table
AC Immune SA SEC filings
AC Immune SA company facts
Broader feeds
Ownership snapshot
Top reported holders of ACIU - AC Immune SA - SHS (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BVF INC/IL
Disclosed value leader
BVF INC/IL
Comparable rows
0/15
Latest evidence
15 May 2026
13F
3/4/5
Highest disclosed value: $54,511,699
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
BVF INC/IL has the largest disclosed position value at $54.51M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BVF INC/IL's linked filing trail.
Disclosed position value
Top 5
BVF INC/IL
$54.51M
Andrea Pfeifer
$22.75M
WELLS FARGO & COMPANY/MN
$2.76M
MILLENNIUM MANAGEMENT LLC
$2.18M
RENAISSANCE TECHNOLOGIES LLC
$1.72M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BVF INC/IL |
13F
Company
|
—
class O/S missing
|
$54,511,699
19,822,436 shares
|
— | 31 Mar 2026 |
| Andrea Pfeifer |
3/4/5
Chief Executive Officer, Director
|
—
mixed-class rows
|
$22,747,154
7,678,576 shares
mixed-class rows
|
-$59,360 | 15 May 2026 |
| WELLS FARGO & COMPANY/MN |
13F
Company
|
—
class O/S missing
|
$2,761,781
1,004,284 shares
|
— | 31 Mar 2026 |
| MILLENNIUM MANAGEMENT LLC |
13F
Company
|
—
class O/S missing
|
$2,179,807
792,657 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
class O/S missing
|
$1,717,009
624,367 shares
|
— | 31 Mar 2026 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$1,441,766
524,278 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
43
Shares
24,469,618
Rows available
43
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
46
Q2 2026 holders
43
Holder diff
-3
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|