§ BIOTECHNOLOGY
USD · BiotechnologyIRWD
IRONWOOD PHARMACEUTICALS INC
USDSector · BiotechnologyBeta · 0.22
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
13F FLOW
103 increased/new, 84 decreased/exited (13F)
AC 13F Analysis
§ 04 · FUNDAMENTALS · THE BOOKS
| P/E | 6.3 | P/B | 2.91 |
| EPS (TTM) | 0.58 |
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| ARMISTICE CAPITAL, LLC | 15.0M | 0.9% | −6% |
| BlackRock, Inc. | 13.4M | 0.0% | +5% |
| Sarissa Capital Management LP | 9.2M | 20.5% | −42% |
| Bank of America Corp | 8.7M | 0.0% | −25% |
| Renaissance Technologies | 8.1M | 0.0% | −2% |
| AQR Capital Management | 7.5M | 0.0% | +60% |
◇ AC INTELLIGENCE
Top institutional owners for IRWD as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER71.8% · 0 holders
OTHER14.3% · 155 holders
DEALER / BANK5.6% · 22 holders
PASSIVE / INDEX3.7% · 9 holders
SYSTEMATIC / QUANT2.7% · 9 holders
QUALITY / COMPOUNDER1.6% · 16 holders
INCOME / DEFENSIVE0.2% · 9 holders
TACTICAL / MACRO0.1% · 2 holders
GROWTH / MOMENTUM0.0% · 1 holder
DEEP VALUE0.0% · 1 holder
ACTIVIST0.0% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for IRWD in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention IRWD yet.