Security key
23254X201
IRONWOOD PHARMACEUTICALS, INC. - Class A common stock, $0.001 par value (CYTH)
CUSIP: 23254X201
Q1 2024 13F Holders as of 31 Mar 2024
- Security type / class
- Equity / Class A common stock, $0.001 par value
- Total 13F shares
- 2,163,455
- Total 13F value
- $3,006,983
- Share change
- +866,036
- SEC-reported price per share
- $1.39
- Number of holders
- 22
- Value change
- +$1,190,588
- Number of buys
- 14
- Number of sells
- 6
- Shares outstanding
- 162,993,492
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2024
Institutions
22
Top holders
10
CYTH full security history
Ownership snapshot
Full 13F holder table
IRONWOOD PHARMACEUTICALS INC SEC filings
IRONWOOD PHARMACEUTICALS INC company facts
Broader feeds
Ownership snapshot
Top reported holders of CYTH - IRONWOOD PHARMACEUTICALS, INC. - Class A common stock, $0.001 par value (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 Dec 2023
13F
Lead comparable stake: 9.9%
Showing 1-6 of 15 holder rows.
Quick read
Sarissa Capital Management LP leads the comparable SEC ownership view at 9.9%.
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 Sarissa Capital Management LP's linked filing trail.
Comparable ownership
Top 5
Sarissa Capital Management LP
9.9%
LSV ASSET MANAGEMENT
4.1%
RENAISSANCE TECHNOLOGIES LLC
4%
ARMISTICE CAPITAL, LLC
3.5%
CREDIT SUISSE AG/
3.4%
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
|
9.9%
|
$187,501,600
16,390,000 shares
|
— | 31 Dec 2023 |
| LSV ASSET MANAGEMENT |
13F
Company
|
4.1%
|
$77,587,000
6,782,101 shares
|
— | 31 Dec 2023 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
4%
|
$75,457,000
6,595,898 shares
|
— | 31 Dec 2023 |
| ARMISTICE CAPITAL, LLC |
13F
Company
|
3.5%
|
$65,208,000
5,700,000 shares
|
— | 31 Dec 2023 |
| CREDIT SUISSE AG/ |
13F
Company
|
3.4%
|
$64,202,573
5,612,113 shares
|
— | 31 Dec 2023 |
| VICTORY CAPITAL MANAGEMENT INC |
13F
Company
|
2.6%
|
$48,329,230
4,224,583 shares
|
— | 31 Dec 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 Q1 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
22
Shares
2,163,455
Rows available
22
| 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 Q1 2024 vs Q1 2024 Across Filers
Q1 2024 holders
22
Q1 2024 holders
22
Holder diff
0
| Investor | Q1 2024 Shares | Q1 2024 Shares | Share Diff | Share Chg % | Q1 2024 value | Q1 2024 value | Value change | Value Chg % |
|---|