Security record · archived quarter
IRWD
Ironwood Pharmaceuticals, Inc. · Healthcare · Drug Manufacturers - Specialty & Generic
14Tracked holders
0Δ holders
58.90MShares held
$42.25MReported value
+1New positions
−1Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -0.2% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 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 · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 16.20M | — | $11.62M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 16.20M | — | $11.62M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 16.20M | — | $11.62M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 16.20M | — | $11.62M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 12.02M | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Renaissance Technologies ✦ | 8.41M | -15.4% | $6.03M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 6.17M | +144.3% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 6.17M | +144.3% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 6.17M | +144.3% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 6.17M | +144.3% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 6.17M | +144.3% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | Marshall Wace ✦ | 3.99M | +616.3% | $2.88M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 21 | Marshall Wace ✦ | 3.99M | +616.3% | $2.88M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | Geode Capital Management ✦ (passive) | 3.50M | +2.4% | $2.51M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | Geode Capital Management ✦ (passive) | 3.50M | +2.4% | $2.51M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | State Street Global Advisors ✦ (passive) | 3.11M | -11.2% | $2.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 25 | Two Sigma Investments ✦ | 2.75M | +124.1% | $1.97M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | D. E. Shaw & Co. ✦ | 1.67M | +1421.7% | $1.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 27 | D. E. Shaw & Co. ✦ | 1.67M | +1421.7% | $1.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | D. E. Shaw & Co. ✦ | 1.67M | +1421.7% | $1.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 497.20K | — | $356,594 | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 497.20K | — | $356,594 | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Citadel Advisors ✦ | 309.27K | -67.1% | $221,810 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 32 | T. Rowe Price ✦ | 172.52K | +0.7% | $123,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | Millennium Management ✦ | 96.33K | -98.5% | $69,089 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 34 | Fisher Asset Management ✦ | 10.00K | New | $7,172 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Fisher Asset Management | $7,172 | 0.0% |
Exited
| Point72 Asset Management | $2.25M | 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: Q2 2025 ·
Methodology ·
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