IRONWOOD PHARMACEUTICALS INC COM CL A is a security (CUSIP 46333X108) tracked across SEC portfolio filings. 225 institutional managers reported $576.2M on Form 13F as of 2026-06-30; 20 registered fund positions totaling $33.3M via N-PORT as of 2026-05-31.
Showing 15 of 225 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| VANGUARD GROUP INC | Valley Forge, PA | $53.8M | 15,958,196 |
| ARMISTICE CAPITAL, LLC | NEW YORK, NY | $52.7M | 15,028,000 |
| BlackRock, Inc. | New York, NY | $46.9M | 13,362,930 |
| UBS Group AG | Zurich, V8 | $42.6M | 933,225 |
| Sarissa Capital Management LP | GREENWICH, CT | $32.3M | 9,188,635 |
| BANK OF AMERICA CORP /DE/ | CHARLOTTE, NC | $30.5M | 8,682,907 |
| RENAISSANCE TECHNOLOGIES LLC | NEW YORK, NY | $28.3M | 8,061,073 |
| AQR CAPITAL MANAGEMENT LLC | Greenwich, CT | $26.4M | 7,535,080 |
| STATE STREET CORP | BOSTON, MA | $26.2M | 7,456,944 |
| TWO SIGMA INVESTMENTS, LP | New York, NY | $20.5M | 5,848,276 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | SAN FRANCISCO, CA | $16.6M | 4,737,857 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $16.0M | 4,543,522 |
| MARSHALL WACE, LLP | LONDON, X0 | $15.9M | 4,525,064 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | FLORHAM PARK, NJ | $12.7M | 3,632,477 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | BOSTON, MA | $11.9M | 3,397,242 |
Showing 15 of 20 fund positions by value.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD STRATEGIC EQUITY FUND | VANGUARD HORIZON FUNDS | $7.4M | 7.30% |
| VANGUARD EXPLORER FUND | VANGUARD EXPLORER FUND | $6.7M | 3.09% |
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $5.7M | 0.69% |
| VANGUARD RUSSELL 2000 INDEX FUND | VANGUARD SCOTTSDALE FUNDS | $2.9M | 1.68% |
| UBS U.S. EQUITY ALPHA RELATIONSHIP FUND | UBS RELATIONSHIP FUNDS | $2.8M | 91.85% |
| U.S. MICRO CAP PORTFOLIO | DFA INVESTMENT DIMENSIONS GROUP INC | $2.1M | 2.87% |
| VANGUARD U.S. MOMENTUM FACTOR ETF | VANGUARD WELLINGTON FUND | $1.9M | 10.13% |
| VANGUARD MARKET NEUTRAL FUND | VANGUARD MONTGOMERY FUNDS | $1.1M | 25.63% |
| Master Small Cap Index Series | Quantitative Master Series LLC | $955K | 1.98% |
| Voya MI Dynamic Small Cap Fund | Voya Equity Trust | $460K | 24.72% |
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $273K | 0.05% |
| Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF | Goldman Sachs ETF Trust | $264K | 2.68% |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND | VANGUARD INSTITUTIONAL INDEX FUNDS | $252K | 0.08% |
| Blackstone Alternative Multi-Strategy Fund | Blackstone Alternative Investment Funds | $123K | 0.34% |
| BlackRock Advantage SMID Cap Fund, Inc. | BlackRock Advantage SMID Cap Fund, Inc. | $115K | 1.52% |