Security key
46333X108
IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD)
CUSIP: 46333X108
Q2 2023 13F Holders as of 30 Jun 2023
- Security type / class
- Equity / Class A Common Stock
- Total 13F shares
- 166,095,520
- Total 13F value
- $1,767,006,761
- Share change
- +321,115
- Put/Call ratio
- 7.1%
- SEC-reported price per share
- $10.64
- Number of holders
- 249
- Value change
- +$4,551,974
- Number of buys
- 142
- Number of sells
- 106
- Shares outstanding
- 163,317,295
Holder snapshot
7 facts
Show 1 more fact
Security identity
1 fact
Report period
Q2 2023
Institutions
249
Top holders
10
IRWD full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2023
Previous quarter: Q1 2023
IRONWOOD PHARMACEUTICALS INC SEC filings
IRONWOOD PHARMACEUTICALS INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 46333X108
Recent filing periods:
Ownership snapshot
Top reported holders of IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Sarissa Capital Managemen...
Disclosed value leader
Sarissa Capital Managemen...
Comparable rows
15/15
Latest evidence
31 Mar 2023
13F
Lead comparable stake: 10%
Showing 1-6 of 15 holder rows.
Quick read
Sarissa Capital Management LP leads the comparable SEC ownership view at 10%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
Sarissa Capital Management LP
10%
LSV ASSET MANAGEMENT
4.6%
WELLINGTON MANAGEMENT GROUP LLP
3.8%
CREDIT SUISSE AG/
3.2%
RENAISSANCE TECHNOLOGIES LLC
2.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Sarissa Capital Management LP |
13F
Company
|
10%
|
$172,422,800
16,390,000 shares
|
— | 31 Mar 2023 |
| LSV ASSET MANAGEMENT |
13F
Company
|
4.6%
|
$79,717,000
7,577,709 shares
|
— | 31 Mar 2023 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
3.8%
|
$64,997,168
6,178,438 shares
|
— | 31 Mar 2023 |
| CREDIT SUISSE AG/ |
13F
Company
|
3.2%
|
$54,405,957
5,171,669 shares
|
— | 31 Mar 2023 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
2.8%
|
$48,789,000
4,637,753 shares
|
— | 31 Mar 2023 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
2.8%
|
$48,486,599
4,609,079 shares
|
— | 31 Mar 2023 |
How to read this table
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.
13F holder rows
Institutional holders as of Q2 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
249
Shares
166,095,520
Rows available
249
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2023 vs Q1 2023 Across Filers
Q1 2023 holders
253
Q2 2023 holders
249
Holder diff
-4
| Investor | Q1 2023 Shares | Q2 2023 Shares | Share Diff | Share Chg % | Q1 2023 value | Q2 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend