Security record · archived quarter
IRWD
Ironwood Pharmaceuticals, Inc. · Healthcare · Drug Manufacturers - Specialty & Generic
94Tracked holders
+9Δ holders
125.58MShares held
$394.14MReported value
+11New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth +10.6% ·
share flow +30.0% ·
net new positions +9.6%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 88 | -4 | 110.50M | $465.13M | +4 | −8 |
| Q1 2026 | 94 | +9 | 125.58M | $394.14M | +11 | −2 |
| Q4 2025 | 85 | +2 | 100.81M | $339.86M | +2 | — |
| Q3 2025 | 17 | 0 | 58.02M | $76.00M | — | — |
| Q2 2025 | 14 | 0 | 58.90M | $42.25M | +1 | −1 |
| Q1 2025 | 11 | 0 | 30.28M | $44.51M | +1 | −1 |
| Q4 2024 | 11 | 0 | 26.27M | $116.38M | +1 | −1 |
| Q3 2024 | 10 | -2 | 15.74M | $64.83M | — | −2 |
| Q2 2024 | 12 | — | 17.55M | $114.44M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 13.36M | +4.5% | $46.90M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | Bank Of America Corp /De/ | 8.68M | -24.6% | $30.48M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | Bank Of America Corp /De/ | 8.68M | -24.6% | $30.48M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Renaissance Technologies ✦ | 8.06M | -1.8% | $28.29M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 7.54M | +59.5% | $26.45M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 23 | State Street Global Advisors ✦ (passive) | 7.46M | +69.0% | $26.17M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 24 | Vanguard Capital Management Llc | 6.10M | — | $21.40M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Two Sigma Investments ✦ | 5.85M | +105.0% | $20.53M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 26 | Balyasny Asset Management L.P. | 18.41M | +28147.6% | $18.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Charles Schwab Investment… | 4.74M | -4.8% | $16.63M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | Geode Capital Management ✦ (passive) | 4.54M | +25.4% | $15.95M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 29 | Geode Capital Management ✦ (passive) | 4.54M | +25.4% | $15.95M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 30 | Marshall Wace ✦ | 4.53M | +2.3% | $15.88M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | Marshall Wace ✦ | 4.53M | +2.3% | $15.88M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 32 | Marshall Wace ✦ | 4.53M | +2.3% | $15.88M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | Arrowstreet Capital ✦ | 3.40M | +724.5% | $11.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Federated Hermes, Inc. | 3.35M | +0.9% | $11.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Federated Hermes, Inc. | 3.35M | +0.9% | $11.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Goldman Sachs Group ✦ | 2.69M | +111.0% | $9.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 37 | Goldman Sachs Group ✦ | 2.69M | +111.0% | $9.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 38 | Dimensional Fund Advisors Lp | 2.08M | +529.3% | $7.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Dimensional Fund Advisors Lp | 2.08M | +529.3% | $7.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | Dimensional Fund Advisors Lp | 2.08M | +529.3% | $7.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Dimensional Fund Advisors Lp | 2.08M | +529.3% | $7.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | Connor, Clark & Lunn Investment… | 1.84M | -7.8% | $6.44M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 43 | Qube Research & Technologies Ltd | 1.59M | -5.4% | $5.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 44 | Susquehanna International Group, Llp | 1.47M | +228.0% | $5.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Northern Trust Corp | 1.27M | +2.6% | $4.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Northern Trust Corp | 1.27M | +2.6% | $4.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Northern Trust Corp | 1.27M | +2.6% | $4.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | Pacer Advisors, Inc. | 1.13M | New | $3.98M | 0.0% | New | 1 | SEC ↗ |
| 49 | Deutsche Bank Ag\ | 1.12M | +1.4% | $3.95M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Deutsche Bank Ag\ | 1.12M | +1.4% | $3.95M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | UBS Group AG | 933.23K | +82.8% | $3.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | UBS Group AG | 933.23K | +82.8% | $3.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | UBS Group AG | 933.23K | +82.8% | $3.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 824.82K | +11.5% | $2.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Fidelity (FMR) ✦ | 790.39K | +15.1% | $2.77M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 62 | Fidelity (FMR) ✦ | 790.39K | +15.1% | $2.77M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 63 | Raymond James Financial Inc | 763.96K | -12.2% | $2.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 64 | Raymond James Financial Inc | 763.96K | -12.2% | $2.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | Raymond James Financial Inc | 763.96K | -12.2% | $2.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Franklin Resources Inc | 744.64K | +93.1% | $2.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Franklin Resources Inc | 744.64K | +93.1% | $2.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Franklin Resources Inc | 744.64K | +93.1% | $2.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Franklin Resources Inc | 744.64K | +93.1% | $2.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Sei Investments Co | 742.55K | +10.2% | $2.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Sei Investments Co | 742.55K | +10.2% | $2.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Victory Capital Management Inc | 713.19K | +3852.9% | $2.50M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Jane Street Group, Llc | 622.25K | -77.9% | $2.18M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Jane Street Group, Llc | 622.25K | -77.9% | $2.18M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 75 | Jane Street Group, Llc | 622.25K | -77.9% | $2.18M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | State Of Wisconsin Investment Board | 598.16K | +232.2% | $2.10M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Mackenzie Financial Corp | 560.03K | +4751.3% | $1.97M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 78 | Invesco Ltd. | 547.36K | +21.9% | $1.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 79 | Invesco Ltd. | 547.36K | +21.9% | $1.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 80 | Invesco Ltd. | 547.36K | +21.9% | $1.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Invesco Ltd. | 547.36K | +21.9% | $1.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Man Group plc | 540.86K | +1034.9% | $1.90M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 83 | Bank of New York Mellon Corp | 484.04K | -5.1% | $1.70M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Bank of New York Mellon Corp | 484.04K | -5.1% | $1.70M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 85 | Millennium Management ✦ | 457.11K | -18.5% | $1.60M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 86 | Wellington Management ✦ | 453.51K | -10.0% | $1.59M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 87 | Wellington Management ✦ | 453.51K | -10.0% | $1.59M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 88 | Wellington Management ✦ | 453.51K | -10.0% | $1.59M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Prudential Financial Inc | 449.84K | +218.7% | $1.58M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 90 | Amundi | 404.24K | -37.1% | $1.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | Amundi | 404.24K | -37.1% | $1.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | BNP Paribas Asset Management… | 375.29K | New | $1.32M | 0.0% | New | 1 | SEC ↗ |
| 93 | Cerity Partners LLC | 368.37K | +8.8% | $1.29M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 94 | Cerity Partners LLC | 368.37K | +8.8% | $1.29M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 95 | Cerity Partners LLC | 368.37K | +8.8% | $1.29M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Robeco Institutional Asset… | 343.00K | 0.0% | $1.20M | 0.0% | Held | 2 | SEC ↗ |
| 97 | Tidal Investments LLC | 304.48K | New | $1.07M | 0.0% | New | 1 | SEC ↗ |
| 98 | Tidal Investments LLC | 304.48K | New | $1.07M | 0.0% | New | 1 | SEC ↗ |
| 99 | Lazard Asset Management Llc | 290.19K | -71.0% | $1.02M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | Cwm, Llc | 278.22K | +19.4% | $976,542 | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Pacer Advisors, Inc. | $3.98M | 0.0% |
| BNP Paribas Asset Management… | $1.32M | 0.0% |
| Tidal Investments LLC | $1.07M | 0.0% |
| Tidal Investments LLC | $1.07M | 0.0% |
Exited
| Fisher Asset Management | $33,700 | was 0.0% |
| Daiwa Securities Group Inc. | $2,000 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 222 holders, 159.91M shares, $533.78M 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: Q1 2026 ·
Methodology ·
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