Skip to main content

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 2021

Institutional positions in Ironwood Pharmaceuticals Inc as of Mar 31, 2021. 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
210
No complete 13F data for Q4 2020
Shares held
171.1M
No complete 13F data for Q4 2020
Total value
$1.91B
No complete 13F data for Q4 2020

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 2021: 210 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 2021: $1.91B
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 2021

Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding IRWD in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Wellington Management Group LLP21,189,305$236.9M0.04%––
Brown Capital Management LLC20,170,126$225.5M1.68%––
Sarissa Capital Management LP16,390,000$183.2M17.56%––
Vanguard Group Inc15,697,720$175.5M0.00%––
BlackRock Inc.13,348,564$149.2M0.00%––
Camber Capital Management LP7,500,000$83.8M3.33%––
State Street Corp7,380,026$82.5M0.00%––
Westfield Capital Management Co LP5,383,650$60.2M0.37%––
Credit Suisse AG3,707,830$41.5M0.03%––
Putnam Investments LLC3,348,532$37.4M0.06%––
Renaissance Technologies LLC3,140,753$35.1M0.04%––
Bridger Management, LLC2,852,414$31.9M2.98%––
Geode Capital Management, LLC2,776,343$31.0M0.00%––
New York State Common Retirement Fund2,369,882$26.5M0.03%––
Dimensional Fund Advisors LP1,944,699$21.7M0.01%––
UBS Asset Management Americas Inc1,856,086$20.8M0.01%––
Northern Trust Corp1,854,700$20.7M0.00%––
Norges Bank1,807,569$20.2M0.00%––
Goldman Sachs Group Inc1,581,236$17.7M0.01%––
D. E. Shaw & Co., Inc.1,521,040$17.0M0.02%––
HealthInvest Partners AB1,450,000$16.2M12.91%––
Nuveen Asset Management, LLC1,396,804$15.6M0.00%––
Charles Schwab Investment Management Inc1,189,795$13.3M0.00%––
JPMorgan Chase & Co1,159,775$13.0M0.00%––
Pictet Asset Management Ltd1,154,927$12.9M0.02%––
Park West Asset Management LLC1,112,383$12.4M0.41%––
Glenmede Trust Co NA1,100,301$12.3M0.07%––
Morgan Stanley1,004,793$11.2M0.00%––
Bank of New York Mellon Corp995,830$11.1M0.00%––
Millennium Management LLC983,457$11.0M0.02%––
Great Lakes Advisors, LLC977,173$10.9M0.18%––
LSV Asset Management973,999$10.9M0.02%––
Invesco Ltd.926,526$10.4M0.00%––
Islet Management, LP900,000$10.1M0.51%––
Deutsche Bank AG747,212$8.35M0.00%––
HealthCor Management, L.P.736,201$8.23M0.31%––
13D Management LLC658,017$7.36M2.73%––
Wells Fargo & Company552,701$6.18M0.00%––
Teachers Retirement System of the State of Kentucky542,131$6.06M0.06%––
AQR Capital Management LLC540,473$6.04M0.01%––
Price Michael F520,000$5.81M0.70%––
Federated Hermes, Inc.487,388$5.45M0.01%––
Two Sigma Investments, LP461,587$5.16M0.02%––
Two Sigma Advisers, LP453,857$5.07M0.01%––
Barclays PLC442,401$4.95M0.00%––
Citigroup Inc436,107$4.88M0.00%––
Jupiter Asset Management Ltd435,529$4.87M0.05%––
Bank of America Corp419,548$4.69M0.00%––
Jefferies Group LLC394,640$4.41M0.10%––
Swiss National Bank347,500$3.88M0.00%––
BNP Paribas Arbitrage, SA335,242$3.75M0.01%––
Russell Investments Group, Ltd.323,857$3.62M0.01%––
Hillsdale Investment Management Inc.302,617$3.38M0.28%––
Rafferty Asset Management, LLC294,450$3.29M0.02%––
FMR LLC291,483$3.26M0.00%––
Alps Advisors Inc291,213$3.26M0.03%––
California Public Employees Retirement System291,024$3.25M0.00%––
Comerica Bank288,977$3.21M0.02%––
Citadel Advisors LLC285,774$3.19M0.00%––
Principal Financial Group Inc280,680$3.14M0.00%––
Jacobs Levy Equity Management, Inc280,544$3.14M0.02%––
Susquehanna International Group, LLP278,399$3.11M0.00%––
Assenagon Asset Management S.A.256,734$2.87M0.01%––
California State Teachers Retirement System240,626$2.69M0.00%––
State of New Jersey Common Pension Fund D232,635$2.60M0.01%––
Alliancebernstein L.P.225,221$2.52M0.00%––
Acadian Asset Management LLC224,636$2.51M0.01%––
Virginia Retirement Systems Et Al222,700$2.49M0.02%––
ClariVest Asset Management LLC221,185$2.47M0.09%––
Skandinaviska Enskilda Banken AB (publ)215,600$2.41M0.02%––
State of Wisconsin Investment Board214,800$2.40M0.01%––
Healthcare Value Capital, LLC200,000$2.24M5.71%––
Squarepoint Ops LLC192,592$2.15M0.02%––
Rhumbline Advisers191,987$2.15M0.00%––
Man Group plc186,226$2.08M0.01%––
ExodusPoint Capital Management, LP185,096$2.07M0.04%––
Parametric Portfolio Associates LLC182,431$2.04M0.00%––
Broderick Brian C152,100$1.70M0.49%––
Price T Rowe Associates Inc150,914$1.69M0.00%––
Junson Asset Management (Hong Kong) Ltd155,277$1.66M0.69%––
Prelude Capital Management, LLC140,338$1.57M0.11%––
Redwood Investment Management, LLC132,165$1.48M0.28%––
Voloridge Investment Management, LLC127,473$1.43M0.01%––
Sullivan, Bruyette, Speros & Blaney, LLC124,303$1.39M0.06%––
American International Group, Inc.122,973$1.38M0.01%––
HighTower Advisors, LLC114,480$1.28M0.00%––
AlphaCrest Capital Management LLC113,392$1.27M0.07%––
Mackay Shields LLC112,519$1.26M0.01%––
Artal Group S.A.110,532$1.24M0.03%––
Legal & General Group Plc108,968$1.22M0.00%––
Jennison Associates LLC106,282$1.19M0.00%––
Schroder Investment Management Group98,045$1.10M0.00%––
Manufacturers Life Insurance Company, The90,763$1.01M0.00%––
State Board of Administration of Florida Retirement System89,266$998.0K0.00%––
American Century Companies Inc88,882$994.0K0.00%––
Davide Leone & Partners Investment Co Ltd.87,677$980.0K0.13%––
Fisher Asset Management, LLC81,518$911.0K0.00%––
Caption Management, LLC78,900$883.0K0.11%––
Winton Group Ltd78,453$877.0K0.05%––
Cubist Systematic Strategies, LLC77,429$866.0K0.01%––