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Ironwood Pharmaceuticals
IRWD

Overview Fund Activity

201 hedge funds and large institutions have $229M invested in Ironwood Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 31 funds opening new positions, 73 increasing their positions, 63 reducing their positions, and 51 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
201
Holders Change
-22
Holders Change %
-9.87%
% of All Funds
2.73%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
31
Increased
73
Reduced
63
Closed
51
Calls
$16.5M
Puts
$10K
Net Calls
+$16.5M
Net Calls Change
-$34.2M

Top Buyers

1
AC
Armistice Capital
New York
+$6.22M
2
Millennium Management
Millennium Management
New York
+$6.14M
3
Jane Street
Jane Street
New York
+$4.55M
4
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
+$4.48M
5
AQR Capital Management
AQR Capital Management
Connecticut
+$3.13M

Top Sellers

1
BlackRock
BlackRock
New York
-$16.4M
2
Pacer Advisors
Pacer Advisors
Pennsylvania
-$14.6M
3
State Street
State Street
Massachusetts
-$7.1M
4
Vanguard Group
Vanguard Group
Pennsylvania
-$5.65M
5
SVCM
Saturn V Capital Management
Texas
-$3.61M
Name Holding Trade Value Shares
Change 		Shares
Change %
Bank of America
26
Bank of America
North Carolina
$2.1M +$1.1M +750,371 +111%
Northern Trust
27
Northern Trust
Illinois
$2.07M -$321K -218,576 -13%
Federated Hermes
28
Federated Hermes
Pennsylvania
$1.92M +$1.37M +934,886 +252%
Two Sigma Investments
29
Two Sigma Investments
New York
$1.8M +$535K +363,768 +42%
JAM
30
Jupiter Asset Management
United Kingdom
$1.8M – – –
SCM
31
Sio Capital Management
New York
$1.5M +$161K +109,833 +12%
Citadel Advisors
32
Citadel Advisors
Florida
$1.38M +$559K +380,084 +68%
VCM
33
Voleon Capital Management
California
$1.28M +$1.16M +787,901 +952%
Mariner
34
Mariner
Kansas
$1.1M +$947K +644,036 +608%
RA
35
Royce & Associates
New York
$1.08M – – –
Los Angeles Capital Management
36
Los Angeles Capital Management
California
$1.01M +$523K +356,087 +107%
Susquehanna International Group
37
Susquehanna International Group
Pennsylvania
$953K +$670K +455,976 +237%
Marshall Wace
38
Marshall Wace
United Kingdom
$820K +$820K +557,521 New
XT
39
XTX Topco
Cayman Islands
$812K +$745K +506,732 +1,104%
GCP
40
GSA Capital Partners
United Kingdom
$771K +$751K +510,809 +3,684%
Bank of New York Mellon
41
Bank of New York Mellon
New York
$734K -$703K -478,522 -49%
ECM
42
ExodusPoint Capital Management
New York
$727K +$727K +494,620 New
Fidelity Investments
43
Fidelity Investments
Massachusetts
$705K +$259K +176,468 +58%
NL
44
Nuveen LLC
North Carolina
$693K +$693K +471,361 New
Walleye Capital
45
Walleye Capital
New York
$634K -$219K -148,687 -26%
Universal-Beteiligungs- und Servicegesellschaft
46
Universal-Beteiligungs- und Servicegesellschaft
Germany
$614K -$12K -8,185 -2%
Robeco Institutional Asset Management
47
Robeco Institutional Asset Management
Netherlands
$560K – – –
BNP Paribas Financial Markets
48
BNP Paribas Financial Markets
France
$550K +$370K +251,759 +205%
CFM
49
Catalyst Funds Management
Australia
$513K +$497K +338,340 +3,222%
Man Group
50
Man Group
United Kingdom
$491K -$31K -21,106 -6%
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