IRONWOOD PHARMACEUTICALS INC IRWD
CIK 0001446847 · CUSIP 46333X108
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock Inc. CIK 1364742 · View history | $210.41M 24,157,768 shares | 0.00% | -1.82M(-7.0%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $170.03M 19,521,366 shares | 0.00% | +3.49M(+21.8%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 03 | Sarissa Capital Management LP CIK 1577524 · View history | $142.76M 16,390,000 shares | 24.97% | 0(0.0%)Unchanged | SEC filing ↗ May 15, 2024 | ▾ |
| 04 | STATE STREET CORP CIK 93751 · View history | $121.22M 13,917,111 shares | 0.01% | +2.39M(+20.7%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 05 | Pacer Advisors, Inc. CIK 1616667 · View history | $62.77M 7,206,187 shares | 0.14% | +7.21MNew | SEC filing ↗ May 10, 2024 | ▾ |
| 06 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $61.84M 7,099,801 shares | 0.10% | +503.90K(+7.6%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 07 | LSV ASSET MANAGEMENT CIK 1050470 · View history | $53.58M 6,151,001 shares | 0.11% | -631.10K(-9.3%)Reduced | SEC filing ↗ May 6, 2024 | ▾ |
| 08 | ARMISTICE CAPITAL, LLC CIK 1601086 · View history | $47.03M 5,400,000 shares | 1.25% | -300.00K(-5.3%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 09 | JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history | $36.89M 4,235,580 shares | 0.16% | +1.23M(+40.8%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 10 | BRAIDWELL LP CIK 1920938 · View history | $30.40M 3,489,843 shares | 0.98% | +3.49MNew | SEC filing ↗ May 15, 2024 | ▾ |
| 11 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $27.42M 3,147,158 shares | 0.00% | +66.69K(+2.2%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 12 | UBS Group AG CIK 1610520 · View history | $26.37M 3,027,715 shares | 0.01% | +2.58M(+579.9%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 13 | Man Group plc CIK 1637460 · View history | $26.00M 2,985,313 shares | 0.07% | +1.56M(+109.4%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 14 | BROWN CAPITAL MANAGEMENT LLC CIK 885062 · View history | $23.52M 2,700,705 shares | 0.42% | -1.01M(-27.2%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 15 | MORGAN STANLEY CIK 895421 · Amended · View history | $23.33M 2,678,116 shares | 0.00% | +530.30K(+24.7%)Added | SEC filing ↗ Oct 17, 2024 | ▾ |
| 16 | Nuveen Asset Management, LLC CIK 1521019 · View history | $16.05M 1,843,243 shares | 0.00% | +6.92K(+0.4%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 17 | Kynam Capital Management, LP CIK 1907884 · View history | $14.15M 1,625,000 shares | 1.57% | +1.63MNew | SEC filing ↗ May 15, 2024 | ▾ |
| 18 | NORTHERN TRUST CORP CIK 73124 · View history | $13.35M 1,532,517 shares | 0.00% | -55.88K(-3.5%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 19 | DEUTSCHE BANK AG\ CIK 948046 · Amended · View history | $13.22M 1,517,726 shares | 0.01% | +1.06M(+234.5%)Added | SEC filing ↗ Jun 2, 2025 | ▾ |
| 20 | JUPITER ASSET MANAGEMENT LTD CIK 1215838 · View history | $12.89M 1,479,964 shares | 0.12% | -790.08K(-34.8%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
Showing 20 / 262 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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