IRWD — IRONWOOD 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 IRWD
| date | signal | measured base rate |
|---|---|---|
| 2026-07-09 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-04-24 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-04-01 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 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 |
|---|---|---|---|---|---|
| 2026-07-20 | Silber Jeffrey SVP, CMO, Head-Res&Drug | Grant or award | 137.0K | 0.00 | 0 |
| 2026-07-07 | Silver Ronald PFO & PAO | Open-market sale 10b5-1 plan | 127.9K | 4.52 | 578.1K |
| 2026-06-16 | McHugh Julie Director | Open-market sale 10b5-1 plan | 21.6K | 3.73 | 80.5K |
| 2026-06-16 | Duane Jon R Director | Grant or award | 63.5K | 0.00 | 0 |
| 2026-06-16 | DENNER ALEXANDER J Director | Grant or award | 63.5K | 0.00 | 0 |
| 2026-06-16 | Moukheibir Catherine Director | Grant or award | 63.5K | 0.00 | 0 |
| 2026-06-16 | McHugh Julie Director | Grant or award 10b5-1 plan | 63.5K | 0.00 | 0 |
| 2026-06-16 | Currie Mark G Director | Grant or award | 63.5K | 0.00 | 0 |
| 2026-06-16 | Kessler Marla L Director | Grant or award | 63.5K | 0.00 | 0 |
| 2026-06-16 | Shepard Jay Director | Grant or award | 63.5K | 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 |
|---|---|---|
| ARMISTICE CAPITAL, LLC | 52.7M | 15.0M |
| BlackRock, Inc. | 46.9M | 13.4M |
| Sarissa Capital Management LP | 32.3M | 9.2M |
| BANK OF AMERICA CORP /DE/ | 30.5M | 8.7M |
| RENAISSANCE TECHNOLOGIES LLC | 28.3M | 8.1M |
| AQR CAPITAL MANAGEMENT LLC | 26.4M | 7.5M |
| STATE STREET CORP | 26.2M | 7.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 23.5M | 6.7M |
| VANGUARD CAPITAL MANAGEMENT LLC | 21.4M | 6.1M |
| TWO SIGMA INVESTMENTS, LP | 20.5M | 5.8M |
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 →
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 →
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