Security key
46333X108
IRONWOOD PHARMACEUTICALS INC - Class A Stock (IRWD)
CUSIP: 46333X108
Q2 2024 13F Holders as of 30 Jun 2024
- Security type / class
- Equity / Class A Stock
- Total 13F shares
- 171,468,668
- Total 13F value
- $1,117,746,593
- Share change
- -187,609
- Put/Call ratio
- 0.25%
- SEC-reported price per share
- $6.52
- Number of holders
- 226
- Value change
- -$10,390,681
- Number of buys
- 112
- Number of sells
- 130
- Shares outstanding
- 165,105,778
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2024
Institutions
226
Top holders
10
IRWD full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
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 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
RENAISSANCE TECHNOLOGIES LLC
Disclosed value leader
Sarissa Capital Managemen...
Comparable rows
15/15
Latest evidence
31 Mar 2024
13F
13D/G
Lead comparable stake: 5.4%
13D/G row: RENAISSANCE TECHNOLOGIES LLC
Showing 1-6 of 15 holder rows.
Quick read
RENAISSANCE TECHNOLOGIES LLC leads the comparable SEC ownership view at 5.4%.
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.
Open SEC evidence
Opens RENAISSANCE TECHNOLOGIES LLC's linked filing trail.
Comparable ownership
Top 5
RENAISSANCE TECHNOLOGIES LLC
5.4%
Sarissa Capital Management LP
9.9%
Pacer Advisors, Inc.
4.4%
LSV ASSET MANAGEMENT
3.7%
ARMISTICE CAPITAL, LLC
3.3%
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 |
|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC |
13F
13D/G
Company
|
5.4%
from 13D/G
|
$61,869,000
7,121,557 shares
mixed-class rows
|
— | 31 Mar 2024 |
| Sarissa Capital Management LP |
13F
Company
|
9.9%
|
$142,756,900
16,390,000 shares
|
— | 31 Mar 2024 |
| Pacer Advisors, Inc. |
13F
Company
|
4.4%
|
$62,765,889
7,206,187 shares
|
— | 31 Mar 2024 |
| LSV ASSET MANAGEMENT |
13F
Company
|
3.7%
|
$53,575,000
6,151,001 shares
|
— | 31 Mar 2024 |
| ARMISTICE CAPITAL, LLC |
13F
Company
|
3.3%
|
$47,034,000
5,400,000 shares
|
— | 31 Mar 2024 |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
Company
|
2.6%
|
$36,891,902
4,235,580 shares
|
— | 31 Mar 2024 |
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 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
226
Shares
171,468,668
Rows available
226
| 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 2024 vs Q1 2024 Across Filers
Q1 2024 holders
259
Q2 2024 holders
226
Holder diff
-33
| Investor | Q1 2024 Shares | Q2 2024 Shares | Share Diff | Share Chg % | Q1 2024 value | Q2 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend