IRONWOOD PHARMACEUTICALS INC (IRWD) Institutional Ownership Changes & 13F Activity
IRONWOOD PHARMACEUTICALS INC (IRWD). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Charles Schwab Investment Management Inc, Susquehanna International Group, Llp, Two Sigma Investments, Lp, Qube Research & Technologies Ltd, and Wells Fargo & Company/Mn.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Integrated Wealth Concepts Llc | Sell | -12,709 | -44.5% | 15,863 | $66.78K | Q2 2026 | Sep 09, 2026 |
| Manufacturers Life Insurance Company, The | Sell | -85 | -0.2% | 42,920 | $180.69K | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +384,127 | +324.8% | 502,403 | $2.12M | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Sell | -6,418 | -74.1% | 2,241 | $9.44K | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +11,080 | +9.6% | 126,160 | $531.13K | Q2 2026 | Aug 19, 2026 |
| Public Employees Retirement System Of Ohio | Sell | -7,105 | -10.6% | 59,925 | $252.28K | Q2 2026 | Aug 17, 2026 |
| Charles Schwab Investment Management Inc | Sell | -1,435,615 | -30.3% | 3,302,242 | $13.90M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Sell | -1,342,920 | -91.2% | 129,237 | $544.09K | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -1,292,187 | -22.1% | 4,556,089 | $19.18M | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Sell | -1,242,096 | -78.1% | 347,985 | $1.47M | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +1,147,348 | +1949.6% | 1,206,198 | $5.08M | Q2 2026 | Aug 14, 2026 |
| Armistice Capital, Llc | Sell | -1,096,000 | -7.3% | 13,932,000 | $58.65M | Q2 2026 | Aug 14, 2026 |
| Aqr Capital Management Llc | Sell | -1,069,159 | -14.2% | 6,465,921 | $27.22M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +623,174 | +23.2% | 3,313,808 | $13.95M | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +577,337 | — | 577,337 | $2.43M | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Sell | -492,547 | -79.2% | 129,700 | $546.04K | Q2 2026 | Aug 14, 2026 |
| Integrated Quantitative Investments Llc | Sell | -458,415 | -83.0% | 93,689 | $394.43K | Q2 2026 | Aug 14, 2026 |
| Jacobs Levy Equity Management, Inc | Buy | +433,487 | +11.9% | 4,065,964 | $17.12M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +403,209 | — | 403,209 | $1.70M | Q2 2026 | Aug 14, 2026 |
| Sei Investments Co | Sell | -283,131 | -38.1% | 459,417 | $1.93M | Q2 2026 | Aug 14, 2026 |
| Lazard Asset Management Llc | Sell | -262,545 | -90.5% | 27,644 | $116.38K | Q2 2026 | Aug 14, 2026 |
| State Of Wisconsin Investment Board | Buy | +180,356 | +30.2% | 778,515 | $3.28M | Q2 2026 | Aug 14, 2026 |
| Cerity Partners Llc | Sell | -160,351 | -43.5% | 208,019 | $875.76K | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Sell | -148,747 | -27.5% | 392,117 | $1.65M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +99,526 | — | 99,526 | $419.00K | Q2 2026 | Aug 14, 2026 |
| Hsbc Holdings Plc | Buy | +96,394 | +324.5% | 126,100 | $541.60K | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +74,969 | +156.4% | 122,907 | $517.44K | Q2 2026 | Aug 14, 2026 |
| Rafferty Asset Management, Llc | Sell | -63,745 | -29.4% | 152,878 | $643.62K | Q2 2026 | Aug 14, 2026 |
| Bridgeway Capital Management, Llc | Sell | -50,700 | -11.5% | 389,793 | $1.64M | Q2 2026 | Aug 14, 2026 |
| Raymond James Financial Inc | Sell | -38,870 | -5.1% | 725,085 | $3.05M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about IRWD activity
Which institutional owners are buying IRWD?
Institutional owners buying IRWD include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in IRWD activity?
"Buy" means an investor increased their reported position in IRWD compared to the prior reporting period. This reflects growing exposure to IRONWOOD PHARMACEUTICALS INC (IRWD) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in IRWD increasing?
Institutional interest in IRWD can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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