IRWD
Ironwood Pharmaceuticals, Inc. · Healthcare · Drug Manufacturers - Specialty & Generic
Momentum inputs (comparable managers):
holder breadth -16.7% ·
share flow -10.3% ·
net new positions -20.0%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| 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 | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Renaissance Technologies ✦ | 8.60M | +0.3% | $35.42M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 3.29M | -2.3% | $13.57M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 3.29M | -2.3% | $13.57M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | Millennium Management ✦ | 925.87K | -30.3% | $3.81M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | Two Sigma Investments ✦ | 890.96K | -2.9% | $3.67M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 697.43K | +70.3% | $2.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 697.43K | +70.3% | $2.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | AQR Capital Management ✦ | 564.11K | -17.6% | $2.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 564.11K | -17.6% | $2.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Norges Bank ✦ (passive) | 394.27K | -71.7% | $1.62M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | D. E. Shaw & Co. ✦ | 244.68K | -36.4% | $1.01M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | D. E. Shaw & Co. ✦ | 244.68K | -36.4% | $1.01M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | D. E. Shaw & Co. ✦ | 244.68K | -36.4% | $1.01M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | T. Rowe Price ✦ | 103.36K | +1.9% | $426,000 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Gotham Asset Management ✦ | 23.77K | -60.5% | $97,916 | 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
| No new tracked buyers this quarter. |
Exited
| Marshall Wace | $1.42M | was 0.0% |
| Wellington Management | $713,907 | 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.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.