IRONWOOD PHARMACEUTICALS INC's ticker is IRWD and the CUSIP is 46333X108. A total of 214 filers reported holding IRONWOOD PHARMACEUTICALS INC in Q1 2021. The put-call ratio across all filers is 0.89 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $718,000 | -68.4% | 55,000 | -68.8% | 0.01% | -73.3% |
| Q2 2021 | $2,272,000 | -8.4% | 176,548 | -20.4% | 0.03% | -43.4% |
| Q1 2021 | $2,480,000 | +335.1% | 221,700 | +342.4% | 0.05% | +307.7% |
| Q4 2020 | $570,000 | -34.9% | 50,113 | -48.6% | 0.01% | -35.0% |
| Q3 2020 | $876,000 | -53.4% | 97,500 | -46.5% | 0.02% | -68.3% |
| Q2 2020 | $1,880,000 | +314.1% | 182,300 | +305.1% | 0.06% | +142.3% |
| Q1 2020 | $454,000 | -78.5% | 45,000 | -71.7% | 0.03% | -63.4% |
| Q4 2019 | $2,116,000 | +134.9% | 159,000 | +51.4% | 0.07% | +51.1% |
| Q3 2019 | $901,000 | -45.3% | 105,000 | -30.2% | 0.05% | -43.4% |
| Q2 2019 | $1,646,000 | -28.2% | 150,400 | -25.7% | 0.08% | -34.1% |
| Q1 2019 | $2,291,000 | +10.6% | 202,400 | +1.2% | 0.13% | -23.6% |
| Q4 2018 | $2,072,000 | – | 200,000 | – | 0.16% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 2,855,515 | $43,661,000 | 13.90% |
| BLUE JAY CAPITAL MANAGEMENT, LLC | 772,369 | $11,810,000 | 7.13% |
| Rubric Capital Management LP | 1,275,000 | $19,495,000 | 6.70% |
| SECTOR GAMMA AS | 1,972,678 | $30,162,000 | 5.68% |
| BRIDGER MANAGEMENT, LLC | 1,879,313 | $28,735,000 | 2.00% |
| Asymmetry Capital Management, L.P. | 57,363 | $877,000 | 1.63% |
| Orbimed Advisors | 7,241,300 | $110,719,000 | 1.41% |
| Broderick Brian C | 144,476 | $2,209,000 | 0.96% |
| Granahan Investment Management | 1,408,000 | $21,528,000 | 0.74% |
| Spark Investment Management LLC | 499,200 | $7,632,000 | 0.63% |