ACIU — AC IMMUNE SA
Reported value held$15.50M
Funds holding (latest)25
SectorHealth Care
Funds holding (Q2 2026)14
Institutional value$9.60M · 4.03M sh
New / Add / Cut / Exit1 / 4 / 7 / 4
Top-5 / Top-10 concentration84.1% / 99.3%
Institutional holdings change
Reducing -14.0%
(-656.29K sh)
Institutional value change
Down -25.6%
As of Q2 2026, 14 SEC-registered investment managers reported holding ACIU (AC IMMUNE SA) in their latest 13F filings, with a combined reported value of $9.60M across 4.03M shares. That is -14.0% by share count (-656.29K shares) versus the previous quarter, while reported value moved -25.6%. Ownership is concentrated: the five largest holders account for 84.1% of reported value and the top ten for 99.3%.
Compared with the prior quarter, 1 opened new positions, 4 added to existing stakes, 7 trimmed, 4 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
ACIU is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 14 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Wells Fargo & Co history | 1.00M | $2.39M | 0.00% | Hold |
| Renaissance Technologies history | 840.13K | $2.00M | 0.00% | Add |
| Millennium Management history | 773.59K | $1.84M | 0.00% | Reduce |
| BlackRock Inc history | 519.27K | $1.24M | 0.00% | Reduce |
| Citadel Advisors history | 253.41K | $603.11K | 0.00% | Reduce |
| Arrowstreet Capital history | 232.95K | $554.43K | 0.00% | Reduce |
| Morgan Stanley history | 131.81K | $313.72K | 0.00% | Add |
| Two Sigma Investments history | 102.83K | $244.72K | 0.00% | Add |
| UBS Group AG history | 85.61K | $203.76K | 0.00% | Reduce |
| Geode Capital Management history | 61.85K | $147.21K | 0.00% | Reduce |
| Goldman Sachs Group history | 14.50K | $34.50K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 7.80K | $20.74K | 0.00% | New |
| Citigroup Inc history | 4.01K | $9.55K | 0.00% | Add |
| PNC Financial Services history | 1.00K | $2.38K | 0.00% | Hold |
Q1 2026 — 17 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Wells Fargo & Co history | 1.00M | $2.76M | 0.00% | Hold |
| Millennium Management history | 792.66K | $2.18M | 0.00% | Reduce |
| Renaissance Technologies history | 624.37K | $1.72M | 0.00% | Reduce |
| BlackRock Inc history | 524.28K | $1.44M | 0.00% | Add |
| Arrowstreet Capital history | 405.66K | $1.12M | 0.00% | Add |
| Citadel Advisors history | 298.23K | $820.14K | 0.00% | Add |
| Point72 Asset Management history | 293.20K | $806.30K | 0.00% | Reduce |
| Northern Trust Corp history | 278.51K | $765.91K | 0.00% | Reduce |
| Marshall Wace history | 131.46K | $361.51K | 0.00% | Reduce |
| UBS Group AG history | 101.63K | $279.48K | 0.00% | Reduce |
| Morgan Stanley history | 89.25K | $245.45K | 0.00% | Reduce |
| Geode Capital Management history | 63.60K | $174.90K | 0.00% | Hold |
| Two Sigma Investments history | 39.09K | $107.50K | 0.00% | Reduce |
| Goldman Sachs Group history | 21.63K | $59.49K | 0.00% | Add |
| Bank of America Corp history | 17.44K | $47.95K | 0.00% | Reduce |
| Citigroup Inc history | 2.81K | $7.73K | 0.00% | Hold |
| PNC Financial Services history | 1.00K | $2.75K | 0.00% | New |
Q4 2025 — 17 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Wells Fargo & Co history | 1.01M | $3.16M | 0.00% | Hold |
| Millennium Management history | 933.34K | $2.93M | 0.00% | Reduce |
| Renaissance Technologies history | 668.87K | $2.10M | 0.00% | Reduce |
| BlackRock Inc history | 502.17K | $1.58M | 0.00% | Add |
| Point72 Asset Management history | 412.75K | $1.30M | 0.00% | New |
| Arrowstreet Capital history | 375.62K | $1.18M | 0.00% | New |
| Northern Trust Corp history | 281.95K | $885.33K | 0.00% | Hold |
| UBS Group AG history | 194.35K | $610.26K | 0.00% | Add |
| Marshall Wace history | 186.71K | $586.26K | 0.00% | New |
| Citadel Advisors history | 133.05K | $417.78K | 0.00% | Add |
| Morgan Stanley history | 94.34K | $296.24K | 0.00% | Add |
| Two Sigma Investments history | 87.88K | $275.96K | 0.00% | Add |
| Geode Capital Management history | 63.60K | $199.71K | 0.00% | Hold |
| Bank of America Corp history | 21.47K | $67.42K | 0.00% | Add |
| Goldman Sachs Group history | 18.55K | $58.26K | 0.00% | Add |
| JPMorgan Chase & Co history | 8.72K | $27.38K | 0.00% | Add |
| Citigroup Inc history | 2.80K | $8.79K | 0.00% | Add |
Q3 2025 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Wells Fargo & Co history | 1.01M | $2.92M | 0.00% | Reduce |
| Millennium Management history | 989.43K | $2.86M | 0.00% | Add |
| Renaissance Technologies history | 770.42K | $2.23M | 0.00% | Reduce |
| BlackRock Inc history | 411.85K | $1.19M | 0.00% | Hold |
| Northern Trust Corp history | 281.95K | $814.84K | 0.00% | Reduce |
| Deutsche Bank AG history | 253.38K | $732.25K | 0.00% | Hold |
| Morgan Stanley history | 92.03K | $265.98K | 0.00% | Add |
| Geode Capital Management history | 63.60K | $183.81K | 0.00% | Hold |
| Citadel Advisors history | 42.61K | $123.15K | 0.00% | Reduce |
| Two Sigma Investments history | 16.77K | $48.48K | 0.00% | Reduce |
| UBS Group AG history | 16.42K | $47.47K | 0.00% | Add |
| Goldman Sachs Group history | 12.63K | $36.52K | 0.00% | Add |
| JPMorgan Chase & Co history | 7.26K | $20.98K | 0.00% | Add |
| Bank of America Corp history | 5.92K | $17.10K | 0.00% | Add |
| Citigroup Inc history | 1.93K | $5.58K | 0.00% | Add |
Q2 2025 — 16 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Wells Fargo & Co history | 1.02M | $2.08M | 0.00% | Add |
| Renaissance Technologies history | 828.32K | $1.68M | 0.00% | Add |
| BlackRock Inc history | 411.31K | $834.95K | 0.00% | Reduce |
| Northern Trust Corp history | 381.35K | $774.15K | 0.00% | Add |
| Millennium Management history | 291.53K | $591.81K | 0.00% | Add |
| Deutsche Bank AG history | 253.38K | $514.35K | 0.00% | Hold |
| Citadel Advisors history | 174.50K | $354.23K | 0.00% | Reduce |
| Marshall Wace history | 135.84K | $275.76K | 0.00% | Reduce |
| Morgan Stanley history | 72.89K | $147.98K | 0.00% | Add |
| Geode Capital Management history | 63.60K | $129.11K | 0.00% | Reduce |
| Two Sigma Investments history | 30.69K | $62.30K | 0.00% | New |
| Goldman Sachs Group history | 10.37K | $21.05K | 0.00% | New |
| UBS Group AG history | 7.47K | $15.16K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 6.11K | $12.40K | 0.00% | Reduce |
| Bank of America Corp history | 5.57K | $11.31K | 0.00% | Add |
| Citigroup Inc history | 1.92K | $3.89K | 0.00% | Add |
Q1 2025 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 1.16M | $2.16M | 0.00% | Reduce |
| Wells Fargo & Co history | 997.62K | $1.87M | 0.00% | Hold |
| Renaissance Technologies history | 803.47K | $1.50M | 0.00% | Add |
| Northern Trust Corp history | 377.09K | $705.15K | 0.00% | Reduce |
| Deutsche Bank AG history | 253.38K | $473.81K | 0.00% | Hold |
| Millennium Management history | 212.75K | $397.84K | 0.00% | Add |
| Marshall Wace history | 212.18K | $396.78K | 0.00% | Add |
| Citadel Advisors history | 178.46K | $333.72K | 0.00% | Add |
| Morgan Stanley history | 72.00K | $134.65K | 0.00% | Reduce |
| Geode Capital Management history | 64.09K | $119.85K | 0.00% | Hold |
| UBS Group AG history | 16.69K | $31.21K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 7.11K | $13.29K | 0.00% | Reduce |
| Bank of America Corp history | 2.51K | $4.70K | 0.00% | Reduce |
| Citigroup Inc history | 1.44K | $2.69K | 0.00% | Reduce |
| Lazard Asset Management history | 813 | $1 | 0.00% | Add |
New Positions (Q2 2026)
- JPMorgan Chase & Co 7.80K sh · $20.74K
Fully Exited (vs previous quarter)
- Point72 Asset Management sold 293.20K sh · $806.30K
- Northern Trust Corp sold 278.51K sh · $765.91K
- Marshall Wace sold 131.46K sh · $361.51K
- Bank of America Corp sold 17.44K sh · $47.95K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wells Fargo & Co | 1.00M | 1.00M | 1.01M | 1.01M | 1.02M | 997.62K | 995.64K | 1.11M | 1.12M | 1.12M | 1.15M | 1.15M | 1.14M | 976.83K | 729.92K | 651.56K | 541.76K | 491.36K | 414.08K | 352.30K |
| Renaissance Technologies | 840.13K | 624.37K | 668.87K | 770.42K | 828.32K | 803.47K | 740.20K | 646.01K | 652.08K | 515.78K | 417.58K | 425.18K | 417.98K | 411.08K | 404.68K | 434.88K | 474.59K | 452.49K | 442.19K | 424.69K |
| Millennium Management | 773.59K | 792.66K | 933.34K | 989.43K | 291.53K | 212.75K | 119.04K | 166.14K | 106.36K | — | — | — | 151.53K | 119.03K | 108.81K | — | — | — | — | 40.45K |
| BlackRock Inc | 519.27K | 524.28K | 502.17K | 411.85K | 411.31K | 1.16M | 2.21M | 2.67M | — | — | — | — | — | — | — | — | — | — | — | — |
| Citadel Advisors | 253.41K | 298.23K | 133.05K | 42.61K | 174.50K | 178.46K | 15.46K | 48.71K | 85.31K | 100.53K | 16.10K | 23.80K | 30.00K | 13.06K | 177.06K | 11.10K | — | 27.10K | 71.21K | 111.54K |
| Arrowstreet Capital | 232.95K | 405.66K | 375.62K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 47.72K |
| Morgan Stanley | 131.81K | 89.25K | 94.34K | 92.03K | 72.89K | 72.00K | 166.56K | 64.94K | 78.67K | 1.38M | 1.76M | 1.74M | 1.76M | 1.95M | 1.95M | 1.98M | 1.97M | 2.00M | 2.24M | 555.70K |
| Two Sigma Investments | 102.83K | 39.09K | 87.88K | 16.77K | 30.69K | — | 40.82K | 57.32K | 99.34K | — | — | — | 15.28K | — | — | — | — | — | — | 64.05K |
| UBS Group AG | 85.61K | 101.63K | 194.35K | 16.42K | 7.47K | 16.69K | 49.68K | 14.63K | 16.14K | 23.66K | 45.00K | 42.97K | 42.87K | 42.87K | 42.87K | 55.87K | 54.83K | 18.82K | 92.49K | 21.32K |
| Geode Capital Management | 61.85K | 63.60K | 63.60K | 63.60K | 63.60K | 64.09K | 64.09K | 58.30K | 54.80K | 54.80K | 40.91K | 40.91K | 37.12K | 37.12K | 37.12K | 37.12K | 37.12K | 37.12K | 37.12K | 37.12K |
| Goldman Sachs Group | 14.50K | 21.63K | 18.55K | 12.63K | 10.37K | — | — | 12.66K | 13.33K | 23.61K | 17.29K | — | — | — | 18.87K | 26.58K | 28.88K | 28.81K | 26.62K | 33.69K |
| JPMorgan Chase & Co | 7.80K | — | 8.72K | 7.26K | 6.11K | 7.11K | 8.42K | 10.70K | 11.35K | 22.11K | 4.28K | 1.20K | 2.73K | 2.73K | 2.73K | 5.27K | 3.51K | 9.43K | 7.03K | 16.13K |
| Citigroup Inc | 4.01K | 2.81K | 2.80K | 1.93K | 1.92K | 1.44K | 2.73K | 1.76K | 2.10K | 310 | 1.51K | — | — | 870.18K | — | 918 | 1.20K | 1.70K | 2.41K | 4.30K |
| PNC Financial Services | 1.00K | 1.00K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
| Point72 Asset Management | — | 293.20K | 412.75K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 228.00K |
| Deutsche Bank AG | — | — | — | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 253.38K | 259.48K | 284.04K | 284.04K | 284.04K | 259.48K | 1.48K |
| Bank of America Corp | — | 17.44K | 21.47K | 5.92K | 5.57K | 2.51K | 2.89K | 3.98K | 2.89K | 2.91K | 258 | — | — | — | 10 | 420 | 881 | 3.75K | 2.73K | 9.88K |
| Marshall Wace | — | 131.46K | 186.71K | — | 135.84K | 212.18K | 66.32K | 99.37K | — | — | — | — | — | — | — | — | — | — | 8.86K | 58.38K |
| Northern Trust Corp | — | 278.51K | 281.95K | 281.95K | 381.35K | 377.09K | 403.03K | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Fidelity Management & Research (FMR) | — | — | — | — | — | — | — | — | 27.20K | 27.20K | 27.20K | — | — | — | — | — | 42 | 51 | 52 | 54 |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details