Security record · archived quarter
IRWD
Ironwood Pharmaceuticals, Inc. · Healthcare · Drug Manufacturers - Specialty & Generic
85Tracked holders
+2Δ holders
100.81MShares held
$339.86MReported value
+2New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +2.4% ·
share flow +3.9% ·
net new positions +2.4%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
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 · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 15.96M | -0.7% | $53.78M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 15.96M | -0.7% | $53.78M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 15.96M | -0.7% | $53.78M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 15.96M | -0.7% | $53.78M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 12.78M | +6.0% | $43.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | Bank Of America Corp /De/ | 11.52M | — | $38.83M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Bank Of America Corp /De/ | 11.52M | — | $38.83M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | Bank Of America Corp /De/ | 11.52M | — | $38.83M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Renaissance Technologies ✦ | 8.20M | -1.8% | $27.65M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 19 | Charles Schwab Investment… | 4.98M | — | $16.77M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 4.72M | -12.2% | $15.92M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 4.72M | -12.2% | $15.92M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 4.72M | -12.2% | $15.92M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 23 | AQR Capital Management ✦ | 4.72M | -12.2% | $15.92M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 4.72M | -12.2% | $15.92M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 4.72M | -12.2% | $15.92M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 26 | Marshall Wace ✦ | 4.42M | +40.7% | $14.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 27 | Marshall Wace ✦ | 4.42M | +40.7% | $14.91M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 28 | State Street Global Advisors ✦ (passive) | 4.41M | +39.8% | $14.87M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Geode Capital Management ✦ (passive) | 3.62M | +0.2% | $12.21M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 30 | Geode Capital Management ✦ (passive) | 3.62M | +0.2% | $12.21M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 31 | Federated Hermes, Inc. | 3.32M | — | $11.18M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Federated Hermes, Inc. | 3.32M | — | $11.18M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Two Sigma Investments ✦ | 2.85M | +12.6% | $9.62M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 34 | Jane Street Group, Llc | 2.82M | — | $9.50M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Jane Street Group, Llc | 2.82M | — | $9.50M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Jane Street Group, Llc | 2.82M | — | $9.50M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Connor, Clark & Lunn Investment… | 1.99M | — | $6.71M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Qube Research & Technologies Ltd | 1.68M | — | $5.67M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Goldman Sachs Group ✦ | 1.28M | +17.6% | $4.30M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | Goldman Sachs Group ✦ | 1.28M | +17.6% | $4.30M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Northern Trust Corp | 1.23M | — | $4.16M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Northern Trust Corp | 1.23M | — | $4.16M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Northern Trust Corp | 1.23M | — | $4.16M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Deutsche Bank Ag\ | 1.11M | — | $3.74M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Deutsche Bank Ag\ | 1.11M | — | $3.74M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Lazard Asset Management Llc | 1.00M | — | $3.37M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Raymond James Financial Inc | 869.83K | — | $2.93M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Raymond James Financial Inc | 869.83K | — | $2.93M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 739.68K | +55.0% | $2.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | Fidelity (FMR) ✦ | 686.74K | +22.6% | $2.31M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 58 | Fidelity (FMR) ✦ | 686.74K | +22.6% | $2.31M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 59 | Sei Investments Co | 673.86K | — | $2.27M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Sei Investments Co | 673.86K | — | $2.27M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Amundi | 642.83K | — | $2.17M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Millennium Management ✦ | 560.71K | +124.2% | $1.89M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 63 | UBS Group AG | 510.54K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | UBS Group AG | 510.54K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | UBS Group AG | 510.54K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Bank of New York Mellon Corp | 510.21K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Bank of New York Mellon Corp | 510.21K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Wellington Management ✦ | 503.94K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 69 | Wellington Management ✦ | 503.94K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 70 | Wellington Management ✦ | 503.94K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 71 | Invesco Ltd. | 449.22K | — | $1.51M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Invesco Ltd. | 449.22K | — | $1.51M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Invesco Ltd. | 449.22K | — | $1.51M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Invesco Ltd. | 449.22K | — | $1.51M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Susquehanna International Group, Llp | 448.80K | — | $1.51M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Susquehanna International Group, Llp | 448.80K | — | $1.51M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Arrowstreet Capital ✦ | 412.06K | New | $1.39M | 0.0% | New | 1 | SEC ↗ |
| 78 | Barclays Plc | 392.90K | — | $1.32M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Barclays Plc | 392.90K | — | $1.32M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Franklin Resources Inc | 385.58K | — | $1.30M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Franklin Resources Inc | 385.58K | — | $1.30M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Franklin Resources Inc | 385.58K | — | $1.30M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Franklin Resources Inc | 385.58K | — | $1.30M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Franklin Resources Inc | 385.58K | — | $1.30M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Robeco Institutional Asset… | 343.00K | — | $1.16M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Cerity Partners LLC | 338.51K | — | $1.14M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Cerity Partners LLC | 338.51K | — | $1.14M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Dimensional Fund Advisors Lp | 330.84K | — | $1.11M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Dimensional Fund Advisors Lp | 330.84K | — | $1.11M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Russell Investments Group, Ltd. | 265.36K | — | $893,711 | 0.0% | n/c | 1 | SEC ↗ |
| 97 | Cwm, Llc | 232.98K | — | $785,000 | 0.0% | n/c | 1 | SEC ↗ |
| 98 | Citadel Advisors ✦ | 223.97K | -65.2% | $754,775 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 99 | Citadel Advisors ✦ | 223.97K | -65.2% | $754,775 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 100 | JPMorgan Chase ✦ | 214.61K | -4.3% | $723,226 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Wellington Management | $1.70M | 0.0% |
| Wellington Management | $1.70M | 0.0% |
| Wellington Management | $1.70M | 0.0% |
| Arrowstreet Capital | $1.39M | 0.0% |
Exited
| No tracked exits this quarter. |
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: Q4 2025 ·
Methodology ·
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