AC Immune SA
corporate_fare Company Profile
AC Immune SA (NASDAQ:ACIU) is a publicly traded company in the Life Sciences sector. Wiseek has independently scored 20 items for ACIU at importance 7 or higher on its 1–10 market-impact scale. Its most recent item scored 7 or higher is dated 2026-09-23, rated 8/10. Across its 20 most recent items scored 7 or higher, the top rating is 9/10, with 13 rated 8 or above. Recent SEC coverage for ACIU spans 6-K, 20-F.
Recent high-impact activity:
- AC Immune's Parkinson's Vaccine Hits All Primary Endpoints in Phase 2 Part 1
- AC Immune's ACI-7104 Hits All Primary Endpoints in Phase 2 Parkinson's Trial
- AC Immune's NLRP3 Inhibitor Shows Brain Penetration, Advances to Phase 1b
- AC Immune Reports Positive Phase 1 Data for NLRP3 Inhibitor ACI-19764
- AC Immune's Parkinson's Candidate ACI-7104 Secures FDA Fast Track and IND Clearance
Financial Snapshot
Short Interest & Short Volume
25.00 days to coverFINRA reported short interest of 3,475,472 shares in ACIU as of the September 15, 2026 settlement, a 5.4% increase from the prior period — about 25.0 days to cover at its recent average daily volume. On October 2, 2026, 55.4% of ACIU volume reported to FINRA trade-reporting facilities was marked short.
Daily short sale volume covers trades reported to FINRA trade-reporting facilities and is not the same as short interest (bi-monthly reported positions). Source: FINRA — FINRA is the owner and source of this short interest and short sale volume data; it may not be redistributed.
Insider Transactions
ACIU files as a Foreign Private Issuer (FPI). Under SEC Exchange Act Section 16(a), officers, directors, and 10% owners of FPIs are exempt from Form 4 insider-transaction reporting requirements. Comparable disclosures, when applicable, appear in the company's Form 20-F (annual) or Form 6-K (interim) filings on SEC EDGAR.