Security record · archived quarter
IONS
Ionis Pharmaceuticals, Inc. · Healthcare · Biotechnology
19Tracked holders
+1Δ holders
95.25MShares held
$3.76BReported value
+1New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +5.6% ·
share flow +0.1% ·
net new positions +5.3%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 139 | +2 | 148.59M | $11.08B | +6 | −3 |
| Q1 2026 | 139 | -2 | 142.62M | $9.86B | +6 | −9 |
| Q4 2025 | 142 | 0 | 143.10M | $10.36B | +1 | — |
| Q3 2025 | 25 | +4 | 95.56M | $6.25B | +5 | −2 |
| Q2 2025 | 19 | +1 | 95.25M | $3.76B | +1 | — |
| Q1 2025 | 15 | -1 | 43.90M | $1.32B | +1 | −2 |
| Q4 2024 | 16 | -1 | 43.25M | $1.51B | — | −1 |
| Q3 2024 | 16 | -1 | 34.86M | $1.40B | — | −1 |
| Q2 2024 | 17 | — | 24.68M | $1.18B | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 23.64M | — | $934.13M | 0.1% | n/c | 1 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 23.64M | — | $934.13M | 0.1% | n/c | 1 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 23.64M | — | $934.13M | 0.1% | n/c | 1 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 23.64M | — | $934.13M | 0.1% | n/c | 1 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 23.64M | — | $934.13M | 0.1% | n/c | 1 | SEC ↗ |
| 6 | Fidelity (FMR) ✦ | 23.64M | — | $934.13M | 0.1% | n/c | 1 | SEC ↗ |
| 7 | The Vanguard Group ✦ (passive) | 16.71M | — | $660.40M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | The Vanguard Group ✦ (passive) | 16.71M | — | $660.40M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 16.71M | — | $660.40M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | The Vanguard Group ✦ (passive) | 16.71M | — | $660.40M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 16.71M | — | $660.40M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Capital World Investors ✦ | 12.54M | +1.4% | $495.46M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | BlackRock ✦ (passive) | 10.90M | — | $430.54M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 37 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 38 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 39 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 40 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 41 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 42 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 43 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 44 | Wellington Management ✦ | 6.35M | -24.6% | $250.72M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | State Street Global Advisors ✦ (passive) | 4.53M | -6.5% | $179.00M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 46 | State Street Global Advisors ✦ (passive) | 4.53M | -6.5% | $179.00M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 47 | State Street Global Advisors ✦ (passive) | 4.53M | -6.5% | $179.00M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 48 | Adage Capital Partners ✦ | 3.80M | +253.3% | $150.14M | 0.3% | ▲ Add | 5 | SEC ↗ |
| 49 | T. Rowe Price ✦ | 3.13M | -4.3% | $123.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 50 | T. Rowe Price ✦ | 3.13M | -4.3% | $123.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 51 | Tweedy, Browne ✦ | 2.89M | -3.1% | $114.26M | 10.6% | ▼ Trim | 5 | SEC ↗ |
| 52 | Geode Capital Management ✦ (passive) | 2.89M | +1.7% | $114.25M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 53 | Geode Capital Management ✦ (passive) | 2.89M | +1.7% | $114.25M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 54 | Millennium Management ✦ | 2.65M | +317.0% | $104.68M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 55 | Two Sigma Investments ✦ | 1.79M | +6.1% | $70.66M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 56 | Citadel Advisors ✦ | 1.49M | -57.0% | $59.07M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 57 | Citadel Advisors ✦ | 1.49M | -57.0% | $59.07M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 58 | ARK Investment Management ✦ | 900.32K | -10.0% | $35.57M | 0.3% | ▼ Trim | 5 | SEC ↗ |
| 59 | Norges Bank ✦ (passive) | 450.25K | -47.5% | $17.79M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 60 | Point72 Asset Management ✦ | 292.65K | +1.9% | $11.56M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | Renaissance Technologies ✦ | 270.71K | +76.3% | $10.70M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 62 | Gotham Asset Management ✦ | 14.28K | New | $564,163 | 0.0% | New | 1 | SEC ↗ |
| 63 | Marshall Wace ✦ | 13.10K | +43.9% | $517,581 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 64 | Marshall Wace ✦ | 13.10K | +43.9% | $517,581 | 0.0% | ▲ Add | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Gotham Asset Management | $564,163 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 490 holders, 170.17M shares, $11.94B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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