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Ironwood Pharmaceuticals Inc

IRWD
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001446847

In the last 90 days, Ironwood Pharmaceuticals Inc insiders filed 0 open-market purchases and 1 sale; 212 institutions reported holding it in 13F filings for Q2 2026, worth $675.8M in total; no superinvestor holds it.

13F holders, Q1 2026

Institutional positions in Ironwood Pharmaceuticals Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
227
+32 vs. Q4 2025
Shares held
161.5M
+22.8M (+16.5%) vs. Q4 2025
Total value
$566.8M
+$100.5M (+21.5%) vs. Q4 2025
New holders
57
86 more added
Sold out
25
56 more reduced

4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting IRWD on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 227 institutions
Q1 2021: 210 institutionsQ2 2021: 209 institutionsQ3 2021: 229 institutionsQ4 2021: 212 institutionsQ1 2022: 221 institutionsQ2 2022: 240 institutionsQ3 2022: 245 institutionsQ4 2022: 250 institutionsQ1 2023: 255 institutionsQ2 2023: 252 institutionsQ3 2023: 249 institutionsQ4 2023: 251 institutionsQ1 2024: 261 institutionsQ2 2024: 227 institutionsQ3 2024: 221 institutionsQ4 2024: 223 institutionsQ1 2025: 200 institutionsQ2 2025: 155 institutionsQ3 2025: 166 institutionsQ4 2025: 199 institutionsQ1 2026: 227 institutionsQ2 2026: 212 institutions
Value heldQ1 2026: $566.8M
Q1 2021: $1.91BQ2 2021: $2.25BQ3 2021: $2.32BQ4 2021: $2.00BQ1 2022: $2.09BQ2 2022: $2.02BQ3 2022: $1.76BQ4 2022: $2.08BQ1 2023: $1.74BQ2 2023: $1.77BQ3 2023: $1.56BQ4 2023: $1.89BQ1 2024: $1.50BQ2 2024: $1.12BQ3 2024: $673.7MQ4 2024: $727.5MQ1 2025: $228.5MQ2 2025: $104.9MQ3 2025: $194.9MQ4 2025: $520.2MQ1 2026: $566.8MQ2 2026: $675.8M
Institutions holding IRWD and their total value by quarter
QuarterHoldersValue
Q2 2026212$675.8M
Q1 2026227$566.8M
Q4 2025199$520.2M
Q3 2025166$194.9M
Q2 2025155$104.9M
Q1 2025200$228.5M
Q4 2024223$727.5M
Q3 2024221$673.7M
Q2 2024227$1.12B
Q1 2024261$1.50B
Q4 2023251$1.89B
Q3 2023249$1.56B
Q2 2023252$1.77B
Q1 2023255$1.74B
Q4 2022250$2.08B
Q3 2022245$1.76B
Q2 2022240$2.02B
Q1 2022221$2.09B
Q4 2021212$2.00B
Q3 2021229$2.32B
Q2 2021209$2.25B
Q1 2021210$1.91B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc; share changes are against Q4 2025.

Institutions holding IRWD in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Ritholtz Wealth Management87,535$307.2K0.01%+87,535New
EntryPoint Capital, LLC86,874$304.9K0.09%+20,249+30.4%Added
Pallas Capital Advisors LLC80,567$282.8K0.01%−7,408−8.4%Reduced
Engineers Gate Manager LP79,852$280.3K0.00%+41,151+106.3%Added
Virtus Investment Advisers, Inc.76,169$267.4K0.07%+1,858+2.5%Added
SmartHarvest Portfolios, LLC75,462$264.9K0.11%−123−0.2%Reduced
Captrust Financial Advisors74,930$262.7K0.00%+11,108+17.4%Added
CIBC World Markets Inc.71,330$250.4K0.00%−10.0%Reduced
JustInvest LLC71,118$249.6K0.00%−3,721−5.0%Reduced
Public Employees Retirement System of Ohio67,030$235.3K0.00%−858−1.3%Reduced
MetLife Investment Management63,767$223.8K0.00%−23,754−27.1%Reduced
Bank of Montreal62,750$220.3K0.00%+62,750New
Buckingham Strategic Partners62,072$217.9K0.00%+2,455+4.1%Added
Wedbush Securities Inc60,703$213.0K0.01%−3,030−4.8%Reduced
Wells Fargo & Company58,850$206.6K0.00%−117,732−66.7%Reduced
Schonfeld Strategic Advisors LLC58,377$204.9K0.00%+58,377New
Virtus ETF Advisers LLC58,000$203.6K0.09%00.0%Unchanged
Colony Group, LLC57,185$200.7K0.00%+13,220+30.1%Added
Universal- Beteiligungs- und Servicegesellschaft mbH56,132$197.0K0.00%−22,881−29.0%Reduced
Scotia Capital Inc.55,272$194.0K0.00%−11,911−17.7%Reduced
Merit Financial Group, LLC54,707$192.0K0.00%+5,329+10.8%Added
D. E. Shaw & Co., Inc.47,938$168.3K0.00%−69,508−59.2%Reduced
BNP Paribas Arbitrage, SA45,643$160.2K0.00%+13,189+40.6%Added
Police & Firemen's Retirement System of New Jersey44,115$154.8K0.00%00.0%Unchanged
National Bank of Canada44,094$154.8K0.00%+44,094New
Manufacturers Life Insurance Company, The43,005$150.9K0.00%−4,583−9.6%Reduced
New York State Common Retirement Fund41,869$147.0K0.00%00.0%Unchanged
Krilogy Financial LLC33,194$143.7K0.00%+2,971+9.8%Added
Brighton Jones LLC40,039$140.5K0.00%+40,039New
Citigroup Inc39,405$138.3K0.00%+23,904+154.2%Added
Intech Investment Management LLC39,043$137.0K0.00%−32,530−45.5%Reduced
Mirae Asset Global Investments Co., Ltd.36,690$128.8K0.00%+600+1.7%Added
Squarepoint Ops LLC32,746$114.9K0.00%−56,134−63.2%Reduced
nVerses Capital, LLC32,554$114.3K0.10%+32,554New
Graham Capital Management, L.P.30,821$108.2K0.00%+30,821New
ProShare Advisors LLC30,474$107.0K0.00%−5,841−16.1%Reduced
HSBC Holdings PLC29,706$104.0K0.00%+6,270+26.8%Added
China Universal Asset Management Co., Ltd.28,936$101.6K0.01%+2,428+9.2%Added
Integrated Wealth Concepts LLC28,572$100.3K0.00%+17,136+149.8%Added
Vise Technologies, Inc.29,680$100.0K0.00%00.0%Unchanged
E Fund Management Co., Ltd.27,230$95.6K0.00%+27,230New
Commonwealth Equity Services, LLC26,478$92.9K0.00%00.0%Unchanged
Grimes & Company, Inc.25,887$90.9K0.00%00.0%Unchanged
Essential Partners LLC22,102$77.6K0.03%+21+0.1%Added
Chicago Partners Investment Group LLC18,483$77.3K0.00%+18,483New
Oversea-Chinese Banking CORP Ltd21,465$75.3K0.00%00.0%Unchanged
EverSource Wealth Advisors, LLC20,336$71.4K0.00%+6,656+48.7%Added
HighTower Advisors, LLC19,920$69.9K0.00%+3,770+23.3%Added
Broderick Brian C18,000$63.2K0.01%00.0%Unchanged
Simplex Trading, LLC17,724$62.2K0.00%+17,724New
NorthCrest Asset Manangement, LLC17,399$61.6K0.00%+4,242+32.2%Added
Abacus Wealth Partners, LLC17,531$61.5K0.01%+17,531New
Virtu Financial LLC16,960$60.0K0.00%+16,960New
Scientech Research LLC15,917$55.9K0.05%+15,917New
Evolve Private Wealth, LLC15,467$54.3K0.00%+658+4.4%Added
DGS Capital Management, LLC14,883$52.2K0.01%+4,458+42.8%Added
Calamos Advisors LLC14,520$51.0K0.00%00.0%Unchanged
Xponance, Inc.14,337$50.3K0.00%+1,918+15.4%Added
Legal & General Group Plc14,288$50.2K0.00%−2,402−14.4%Reduced
Brevan Howard Capital Management LP14,218$49.9K0.00%+14,218New
Ameritas Investment Partners, Inc.13,773$48.3K0.00%00.0%Unchanged
Bull Harbor Capital LLC13,721$48.2K0.01%+13,721New
Nine Masts Capital Ltd13,527$47.5K0.01%+13,527New
Y-Intercept (Hong Kong) Ltd13,470$47.3K0.00%+13,470New
Farallon Capital Management, L.L.C.13,000$45.6K0.00%00.0%Unchanged
Axq Capital, LP12,949$45.5K0.01%+12,949New
Abel Hall, LLC12,908$45.3K0.01%−3,753−22.5%Reduced
Ariadne Wealth Management, LP12,564$44.1K0.02%+340+2.8%Added
Neuberger Berman Group LLC12,510$43.9K0.00%−2,342−15.8%Reduced
Evoke Wealth, LLC12,062$42.3K0.00%+775+6.9%Added
waypoint wealth counsel11,999$42.1K0.02%−504−4.0%Reduced
Cetera Investment Advisers11,949$41.9K0.00%00.0%Unchanged
Waddell & Associates, LLC11,682$41.0K0.00%+11,682New
MQS Management LLC11,451$40.2K0.03%−963−7.8%Reduced
Simplify Asset Management Inc.11,447$40.2K0.00%+501+4.6%Added
Tower Research Capital LLC (TRC)11,406$40.0K0.00%−3,743−24.7%Reduced
Coldstream Capital Management Inc11,388$40.0K0.00%−912−7.4%Reduced
Principal Financial Group Inc11,375$39.9K0.00%+11,375New
Stonebrook Private Inc.10,926$38.4K0.01%−59−0.5%Reduced
Allegiance Financial Group Advisory Services LLC10,717$37.6K0.01%+10,717New
Gotham Asset Management, LLC10,657$37.4K0.00%+10,657New
California State Teachers Retirement System8,659$30.4K0.00%−1,192−12.1%Reduced
MAI Capital Management6,564$23.0K0.00%+6,564New
Financial Management Professionals, Inc.6,508$22.8K0.00%+6,508New
Owl Creek Wealth Partners LLC6,195$21.7K0.01%+6,195New
Private Wealth Asset Management, LLC6,000$21.1K0.00%+6,000New
IFP Advisors, Inc4,033$14.2K0.00%00.0%Unchanged
Allworth Financial LP3,997$14.0K0.00%+2,540+174.3%Added
GF Fund Management Co. Ltd.3,636$12.8K0.00%+440+13.8%Added
Zurcher Kantonalbank (Zurich Cantonalbank)3,079$10.8K0.00%+3,079New
Rockefeller Capital Management L.P.2,732$9.59K0.00%+2,184+398.5%Added
GAMMA Investing LLC2,411$8.46K0.00%−51−2.1%Reduced
True Wealth Design, LLC2,361$8.29K0.00%00.0%Unchanged
Rialto Wealth Management, LLC2,174$7.63K0.00%+2,174New
WealthCollab, LLC1,970$6.92K0.00%00.0%Unchanged
Rothschild Investment LLC1,784$6.26K0.00%+818+84.7%Added
Jones Financial Companies LLLP1,993$6.10K0.00%+310+18.4%Added
Farther Finance Advisors, LLC1,535$5.99K0.00%+1,483+2,851.9%Added
SRS Capital Advisors, Inc.1,703$5.98K0.00%+1,680+7,304.3%Added
UMA Financial Services, Inc.1,669$5.86K0.00%00.0%Unchanged