Security key
46333X108
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 160,164,908
- Total 13F shares
- 246,570
- Share change
- 0
- Total reported value
- $876,414
- Price per share
- $3.51
- Number of holders
- 6
Report period
Q1 2026
Institutions
6
Top holders
6
Broader feeds
Reporting periods
Holder history for CUSIP 46333X108
Recent filing periods:
Top shareholders of 46333X108 - Ironwood Pharmaceuticals Inc - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
13D/G
|
Company · The Vanguard Group |
9.8%
from 13D/G
|
15,958,196
|
$53,779,120 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
13D/G
|
Company |
5.4%
from 13D/G
|
8,204,973
|
$27,650,759 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
13D/G
|
Company · STATE STREET CORPORATION |
5.2%
from 13D/G
|
4,411,222
|
$14,865,818 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.14%
|
223,969
|
$754,775 | — | 31 Dec 2025 |
Institutional Holders of Ironwood Pharmaceuticals Inc - Common Stock as of Q1 2026
As of 31 Mar 2026,
Ironwood Pharmaceuticals Inc - Common Stock was held by
6 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
246,570 shares.
The largest 6 holders included
FIFTH THIRD BANCORP, Mirae Asset Global Investments Co., Ltd., Chicago Partners Investment Group LLC, Calamos Advisors LLC, PRINCIPAL FINANCIAL GROUP INC, and Avion Wealth.
This page lists
6
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
4
Q1 2026 holders
6
Holder diff
2
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.