Who Owns Ironwood Pharmaceuticals, Inc. (IRWD)?Hedge Fund & Institutional Holders

$3.37+0.00 (+0.00%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$InfinityT

% of Float Held

1.0129085402184873e+302%

QoQ Change in Holders

+8 / -5

Price History

$0.57$1.77$2.98$4.18$5.39Sep 24Jun 25Mar 26

IRWD — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
FEDERATED HERMES, INC.New Position+3.3M+$11.0B
CHARLES SCHWAB INVESTMENT MANAGEMENT INCIncreased+59K+$9.6B
JACOBS LEVY EQUITY MANAGEMENT, INCIncreased+839K+$6.5B
TWO SIGMA INVESTMENTS, LPIncreased+319K+$5.7B
LAZARD ASSET MANAGEMENT LLCNew Position+1.0M+$3.0B
Hillsdale Investment Management Inc.New Position+1.2M+$3.0B
GOLDMAN SACHS GROUP INCIncreased+191K+$2.6B
DIADEMA PARTNERS LPNew Position+684K+$2.3B
Exome Asset Management LLCNew Position+649K+$2.2B
AmundiNew Position+643K+$2.0B
FMR LLCIncreased+127K+$2.0B
RAYMOND JAMES FINANCIAL INCIncreased+855K+$2.0B
Range Financial Group LLCNew Position+426K+$1.4B
Robeco Institutional Asset Management B.V.New Position+343K+$1.2B
Invesco Ltd.Increased+83K+$1.0B

IRWD — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
ARMISTICE CAPITAL, LLCDecreased-125K-$21.2B
Kynam Capital Management, LPClosed Position-5.5M-$7.2B
Qube Research & Technologies LtdDecreased-1.1M-$3.7B
IEQ CAPITAL, LLCDecreased-28K-$864.8M
CITADEL ADVISORS LLCDecreased-420K-$843.7M
HIGHBRIDGE CAPITAL MANAGEMENT LLCClosed Position-537K-$703.8M
D. E. Shaw & Co., Inc.Decreased-255K-$487.7M
Russell Investments Group, Ltd.Decreased-61K-$429.3M
ROYCE & ASSOCIATES LPClosed Position-301K-$393.8M
Tidal Investments LLCClosed Position-294K-$385.4M
RHUMBLINE ADVISERSDecreased-23K-$292.4M
PANAGORA ASSET MANAGEMENT INCDecreased-105K-$208.2M
Arax Advisory PartnersDecreased-143K-$187.8M
Siren, L.L.C.Closed Position-111K-$144.8M
Engineers Gate Manager LPDecreased-63K-$133.6M

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1Sarissa Capital Management LP15,919,435$53.6B24.07%Share
2UBS Group AG11,200,320$37.7B6.12%Call
3BANK OF AMERICA CORP /DE/9,644,603$32.0B2.33%Share
4RENAISSANCE TECHNOLOGIES LLC8,204,973$27.0B41.89%Share
5CHARLES SCHWAB INVESTMENT MANAGEMENT INC4,975,939$16.0B2.49%Share
6AQR CAPITAL MANAGEMENT LLC4,529,894$15.0B7.87%Share
7FEDERATED HERMES, INC.3,317,630$11.0B18.38%Share
8TWO SIGMA ADVISERS, LP3,140,100$10.0B19.44%Share
9TWO SIGMA INVESTMENTS, LP2,853,205$9.0B12.69%Share
10JACOBS LEVY EQUITY MANAGEMENT, INC2,759,667$9.0B34.75%Share
11Connor, Clark & Lunn Investment Management Ltd.1,990,927$6.0B15.74%Share
12BANK OF AMERICA CORP /DE/1,876,807$6.0B0.44%Share
13NORTHERN TRUST CORP1,202,422$4.0B0.51%Share
14LAZARD ASSET MANAGEMENT LLC1,000,445$3.0B5.08%Share
15DEUTSCHE BANK AG\1,107,233$3.0B0.98%Share
16Hillsdale Investment Management Inc.1,156,378$3.0B0.08%Share
17DIADEMA PARTNERS LP683,611$2.3B0.40%Share
18Exome Asset Management LLC648,532$2.2B1.04%Share
19RAYMOND JAMES FINANCIAL INC849,648$2.0B0.62%Share
20Amundi642,830$2.0B0.54%Share
21GOLDMAN SACHS GROUP INC665,316$2.0B0.25%Share
22GOLDMAN SACHS GROUP INC609,999$2.0B0.25%Share
23SEI INVESTMENTS CO673,844$2.0B1.97%Share
24FMR LLC683,877$2.0B0.10%Share
25UBS Group AG508,329$1.7B0.28%Share
26Range Financial Group LLC426,095$1.4B0.50%Share
27Invesco Ltd.379,636$1.3B0.20%Share
28Robeco Institutional Asset Management B.V.342,998$1.2B1.64%Share
29MILLENNIUM MANAGEMENT LLC560,713$1.0B0.42%Share
30FRANKLIN RESOURCES INC367,934$1.0B0.25%Share
31BARCLAYS PLC392,807$1.0B0.24%Share
32WELLINGTON MANAGEMENT GROUP LLP337,687$1.0B0.18%Share
33DIMENSIONAL FUND ADVISORS LP302,898$1.0B0.21%Share
34BRIDGEWAY CAPITAL MANAGEMENT, LLC495,993$1.0B0.02%Share
35ARROWSTREET CAPITAL, LIMITED PARTNERSHIP412,061$1.0B0.59%Share
36GROUP ONE TRADING LLC242,100$815.0M1.42%Call
37Hennion & Walsh Asset Management, Inc.196,032$660.0M0.02%Share
38Persistent Asset Partners Ltd182,046$613.0M0.28%Share
39KLP KAPITALFORVALTNING AS174,200$587.0M2.27%Share
40State of Wyoming157,325$530.0M0.06%Share
41Integrated Quantitative Investments LLC102,654$345.0M0.07%Share
42Pallas Capital Advisors LLC87,975$296.0M0.01%Share
43Universal- Beteiligungs- und Servicegesellschaft mbH79,013$266.0M0.43%Share
44STRS OHIO76,600$258.0M0.96%Share
45EXCHANGE TRADED CONCEPTS, LLC76,554$257.0M1.96%Share
46Virtus Investment Advisers, LLC74,311$250.0M0.07%Share
47EntryPoint Capital, LLC66,625$224.0M0.09%Share
48Optimist Retirement Group LLC59,912$201.0M0.09%Share
49Krilogy Financial LLC30,223$156.0M0.01%Share
50Invesco Ltd.39,185$132.0M0.02%Share

IRWD Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025197$242.3B+69
Q3 2025128$114.6B-8
Q2 2025136$62.1B-65
Q1 2025201$174.1B-10
Q4 2024211$549.6B+38
Q3 2024173$25.7T-10
Q2 2024183$50.3T-21
Q1 2024204$865.0T—

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As of Q4 2025, 50 institutional investors hold IRWD (Ironwood Pharmaceuticals, Inc.). The largest holder is Sarissa Capital Management LP with $53.6B in shares. This quarter, 8 institutions opened new positions and 5 closed their positions.

Frequently Asked Questions

How many hedge funds own IRWD?

As of Q4 2025, 50 institutional investors report holding IRWD (Ironwood Pharmaceuticals, Inc.) in their 13F filings.

Who is the largest institutional holder of IRWD?

The largest institutional holder of IRWD is Sarissa Capital Management LP with $53.6B in shares.

Is institutional ownership of IRWD increasing or decreasing?

This quarter, 8 institutions opened new positions in IRWD and 5 closed their positions.