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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 %
SVCM
201
Saturn V Capital Management
Texas
– -$3.61M -814,533 Closed
SCM
202
Stonepine Capital Management
Oregon
– -$2.87M -648,785 Closed
Public Sector Pension Investment Board (PSP Investments)
203
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
– -$1.56M -352,106 Closed
WCM
204
Wedge Capital Management
North Carolina
– -$1.28M -289,023 Closed
Norges Bank
205
Norges Bank
Norway
– -$1.12M -252,291 Closed
Rafferty Asset Management
206
Rafferty Asset Management
New York
– -$1.05M -236,732 Closed
PP
207
PDT Partners
New York
– -$992K -223,938 Closed
VI
208
Vestcor Inc
New Brunswick, Canada
– -$658K -148,614 Closed
MA
209
MYDA Advisors
New York
– -$510K -115,200 Closed
Thrivent Financial for Lutherans
210
Thrivent Financial for Lutherans
Minnesota
– -$482K -108,850 Closed
HCA
211
Harbor Capital Advisors
Illinois
– -$441K -99,610 Closed
VEA
212
Virtus ETF Advisers
New York
– -$435K -98,218 Closed
Ensign Peak Advisors
213
Ensign Peak Advisors
Utah
– -$378K -85,392 Closed
SOADOR
214
State of Alaska Department of Revenue
Alaska
– -$355K -80,212 Closed
Verition Fund Management
215
Verition Fund Management
Connecticut
– -$329K -74,330 Closed
LSERS
216
Louisiana State Employees Retirement System
Louisiana
– -$302K -68,100 Closed
State of Tennessee, Department of Treasury
217
State of Tennessee, Department of Treasury
Tennessee
– -$296K -66,821 Closed
PA
218
Profund Advisors
Maryland
– -$228K -51,455 Closed
CM
219
Caption Management
Oklahoma
– -$222K -50,000 Closed
GCM
220
Gallacher Capital Management
Colorado
– -$221K -49,821 Closed
MSRPS
221
Maryland State Retirement & Pension System
Maryland
– -$209K -47,110 Closed
YCM
222
Yousif Capital Management
Michigan
– -$189K -42,766 Closed
New York State Teachers Retirement System (NYSTRS)
223
New York State Teachers Retirement System (NYSTRS)
New York
– -$155K -34,900 Closed
OPERF
224
Oregon Public Employees Retirement Fund
Oregon
– -$147K -33,150 Closed
CIS
225
Connors Investor Services
Pennsylvania
– -$137K -31,000 Closed
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