Ironwood Pharmaceuticals, Inc.

Historical 13F Holders

Symbol
IRWD
CUSIP
46333X108
All holders as of
Q2 2026
Type
Equity
Class
COM CL A
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 46333X108 since 12/18/2024, largest first.

Filer % of Class Filed
Armistice Capital, LLC 13G/A
8.4% 8/14/2026
Event 6/30/2026
BlackRock, Inc. 13G/A 8.1% 7/28/2026
Event 6/30/2026
Bank of America Corp /DE/ 13G/A 6.1% 4/27/2026
Event 3/31/2026
Sarissa Capital Management LP 13D/A
5.8% 3/19/2026
Event 3/17/2026
State Street Corp 13G 5.4% 8/7/2026
Event 6/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (4)
Renaissance Technologies LLC 13G/A
4.9% 5/14/2026
Event 3/31/2026
Barclays PLC 13G/A 2.0% 11/12/2025
Event 9/30/2025
Pacer Advisors, Inc. 13G/A
1.1% 5/2/2025
Event 3/31/2025
Vanguard Group Inc 13G/A 0% 3/27/2026
Event 3/13/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 8 692 k $2.67 M
2026 Q2 220 161 M $678 M
2026 Q1 236 162 M $567 M
2025 Q4 206 155 M $520 M
2025 Q3 171 149 M $195 M
2025 Q2 159 148 M $106 M
2025 Q1 205 156 M $229 M
2024 Q4 232 164 M $727 M
2024 Q3 226 164 M $675 M
2024 Q2 237 178 M $1.16 B
2024 Q1 294 179 M $1.56 B
2023 Q4 269 170 M $1.94 B
2023 Q3 260 162 M $1.56 B
2023 Q2 258 166 M $1.77 B
2023 Q1 261 166 M $1.75 B
2022 Q4 258 179 M $2.22 B
2022 Q3 250 170 M $1.76 B
2022 Q2 243 175 M $2.02 B
2022 Q1 227 167 M $2.10 B
2021 Q4 231 173 M $2.01 B
2021 Q3 243 177 M $2.32 B
2021 Q2 228 175 M $2.25 B
2021 Q1 227 171 M $1.91 B
2020 Q4 220 173 M $1.97 B
2020 Q3 201 179 M $1.61 B
2020 Q2 215 178 M $1.84 B
2020 Q1 205 179 M $1.80 B
2019 Q4 209 180 M $2.39 B
2019 Q3 174 174 M $1.49 B
2019 Q2 169 162 M $1.77 B
2019 Q1 170 155 M $2.10 B
2018 Q4 163 151 M $1.57 B
2018 Q3 177 148 M $2.73 B
2018 Q2 170 149 M $2.85 B
2018 Q1 166 153 M $2.36 B
2017 Q4 175 153 M $2.29 B
2017 Q3 164 157 M $2.48 B
2017 Q2 178 148 M $2.78 B
2017 Q1 172 147 M $2.50 B
2016 Q4 173 141 M $2.15 B
2016 Q3 165 138 M $2.19 B
2016 Q2 156 137 M $1.79 B
2016 Q1 145 141 M $1.54 B
2015 Q4 146 141 M $1.63 B
2015 Q3 139 157 M $1.64 B
2015 Q2 143 144 M $1.73 B
2015 Q1 149 134 M $2.14 B
2014 Q4 133 134 M $2.05 B
2014 Q3 151 132 M $1.71 B
2014 Q2 156 127 M $1.94 B
2014 Q1 151 132 M $1.62 B