IRONWOOD PHARMAC (IRWD): Institutional Ownership
Hedge funds and institutional managers reporting a position in IRWD · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
15
13F filers
Aggregate Value
$77.0M
Across holders
Last Price
$4.13
2026-06-26
Sector
Health Care
GICS
Holder activity7 new4 added4 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 8.06M | $28.3M | 36.8% | 0.0% | Reduced | $-505K | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 5.85M | $20.5M | 26.7% | 0.0% | Added | +$10.5M | Q1 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 1.51M | $17.3M | 22.5% | 0.0% | New | — | Q4 2023 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 1.59M | $5.6M | 7.2% | 0.0% | Reduced | $-320K | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 662K | $2.3M | 3.0% | 0.0% | Reduced | $-10.9M | Q1 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 541K | $1.9M | 2.5% | 0.0% | Added | +$1.7M | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 109K | $383K | 0.5% | 0.0% | Added | +$335K | Q1 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 65K | $220K | 0.3% | 0.0% | New | — | Q4 2025 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 58K | $205K | 0.3% | 0.0% | New | — | Q1 2026 |
| TUDOR INVESTMENT CORP ET AL CIK 0000923093 | Hedge Fund | 79K | $104K | 0.1% | 0.0% | New | — | Q3 2025 |
| Brevan Howard Capital Management LP CIK 0001512857 | Hedge Fund | 14K | $50K | 0.1% | 0.0% | New | — | Q1 2026 |
| Gotham Asset Management, LLC CIK 0001510387 | Hedge Fund | 11K | $37K | 0.0% | 0.0% | New | — | Q1 2026 |
| Fisher Asset Management, LLC CIK 0000850529 | Institutional Manager | 10K | $34K | 0.0% | 0.0% | New | — | Q4 2025 |
| Walleye Capital LLC CIK 0001758720 | Hedge Fund | 9K | $31K | 0.0% | 0.0% | Reduced | $-1.8M | Q1 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 587 | $2K | 0.0% | 0.0% | Added | +$2K | Q1 2026 |
Reduced
Hedge Fund
$28.3M· 36.8% of total· 0.0% port· 8.06M sh· $-505K QoQ· Q1 2026
Added
Hedge Fund
$20.5M· 26.7% of total· 0.0% port· 5.85M sh· +$10.5M QoQ· Q1 2026
New
Hedge Fund
$17.3M· 22.5% of total· 0.0% port· 1.51M sh· — QoQ· Q4 2023
Reduced
Hedge Fund
$5.6M· 7.2% of total· 0.0% port· 1.59M sh· $-320K QoQ· Q1 2026
Reduced
Hedge Fund
$2.3M· 3.0% of total· 0.0% port· 662K sh· $-10.9M QoQ· Q1 2026
Added
Hedge Fund
$1.9M· 2.5% of total· 0.0% port· 541K sh· +$1.7M QoQ· Q1 2026
Added
Hedge Fund
$383K· 0.5% of total· 0.0% port· 109K sh· +$335K QoQ· Q1 2026
New
Hedge Fund
$220K· 0.3% of total· 0.0% port· 65K sh· — QoQ· Q4 2025
New
Hedge Fund
$205K· 0.3% of total· 0.0% port· 58K sh· — QoQ· Q1 2026
New
Hedge Fund
$104K· 0.1% of total· 0.0% port· 79K sh· — QoQ· Q3 2025
New
Hedge Fund
$50K· 0.1% of total· 0.0% port· 14K sh· — QoQ· Q1 2026
New
Hedge Fund
$37K· 0.0% of total· 0.0% port· 11K sh· — QoQ· Q1 2026
New
Institutional Manager
$34K· 0.0% of total· 0.0% port· 10K sh· — QoQ· Q4 2025
Reduced
Hedge Fund
$31K· 0.0% of total· 0.0% port· 9K sh· $-1.8M QoQ· Q1 2026
Added
Hedge Fund
$2K· 0.0% of total· 0.0% port· 587 sh· +$2K QoQ· Q1 2026