IONS — IONIS PHARMACEUTICALS INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Others in Healthcare
Measured signals that fired on IONS
| date | signal | measured base rate |
|---|---|---|
| 2026-07-16 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-07-09 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-06 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-25 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-02 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-04-17 | Cluster sale: three or more insiders insider | -0.36% over 21 days · t = -3.35 · n = 21,529 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-31 | Hayden Michael R Director | Open-market purchase | 5.0K | 51.60 | 258.0K |
| 2026-07-30 | Hayden Michael R Director | Open-market purchase | 15.0K | 53.38 | 800.7K |
| 2026-07-15 | BERTHELSEN SPENCER R Director | Option exercise | 5.2K | 0.00 | 0 |
| 2026-07-15 | HERMAN JOAN E Director | Option exercise | 5.2K | 0.00 | 0 |
| 2026-07-07 | BENNETT C FRANK EVP, Chief Scientific Officer | Open-market sale 10b5-1 plan | 15.0K | 85.46 | 1.3M |
| 2026-07-07 | Diaz Allene M. Director | Open-market sale 10b5-1 plan | 10.1K | 85.42 | 863.6K |
| 2026-07-07 | Diaz Allene M. Director | Option exercise 10b5-1 plan | 10.1K | 47.11 | 476.3K |
| 2026-07-07 | BENNETT C FRANK EVP, Chief Scientific Officer | Open-market sale 10b5-1 plan | 5.5K | 83.58 | 462.7K |
| 2026-07-07 | Kordasiewicz Holly B. EVP, Chief Development Officer | Open-market sale 10b5-1 plan | 362 | 84.30 | 30.5K |
| 2026-07-07 | BENNETT C FRANK EVP, Chief Scientific Officer | Other Acquisition/Disposition 10b5-1 plan | 15.0K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| FMR LLC | 1.8B | 24.6M |
| Capital World Investors | 1.6B | 21.2M |
| BlackRock, Inc. | 784.1M | 10.4M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 586.4M | 7.8M |
| VANGUARD CAPITAL MANAGEMENT LLC | 534.5M | 7.1M |
| WELLINGTON MANAGEMENT GROUP LLP | 480.0M | 6.4M |
| TWO SIGMA INVESTMENTS, LP | 439.8M | 5.9M |
| GEODE CAPITAL MANAGEMENT, LLC | 305.2M | 4.0M |
| STATE STREET CORP | 300.0M | 4.0M |
| ROYAL BANK OF CANADA | 285.5M | 3.8M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-07-31 | 2026-07-30 | on EDGAR ↗ |
| S-8 | 2026-07-31 | — | on EDGAR ↗ |
| 10-Q | 2026-07-29 | 2026-06-30 | on EDGAR ↗ |
| 8-K | 2026-07-29 | 2026-07-29 | on EDGAR ↗ |
| 4 | 2026-07-17 | 2026-07-15 | on EDGAR ↗ |
| 4 | 2026-07-17 | 2026-07-15 | on EDGAR ↗ |
| 4 | 2026-07-17 | 2026-07-15 | on EDGAR ↗ |
| 4 | 2026-07-17 | 2026-07-15 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- 10 Health Care Stocks Whale Activity In Today’s Session · 2026-08-18 · benzinga
- Ionis Stock Has Plunged 30%. Is It Time to Buy the Beaten-Down Stock? · 2026-08-14
Ask the AI about IONS
The assistant reads every block on this page — price history, filings, insider transactions, institutional positions, short volume, macro and the measured base rates — and says what it implies, quoting the number behind each claim and declaring what it does not have.
Everything on this page is live in the terminal.
Charts, filings, insider flow and the AI — open without an account.
Free plan for good. Pro is $69.99/mo, or $4.99 for a 7-day trial. See the plans →