Security key
23254X201
IRONWOOD PHARMACEUTICALS, INC. - Class A common stock, $0.001 par value (CYTH)
CUSIP: 23254X201
Q4 2023 13F Holders as of 31 Dec 2023
- Security type / class
- Equity / Class A common stock, $0.001 par value
- Total 13F shares
- 1,297,352
- Total 13F value
- $2,062,666
- Share change
- +816,375
- SEC-reported price per share
- $1.59
- Number of holders
- 21
- Value change
- +$1,300,133
- 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
Q4 2023
Institutions
21
Top holders
10
CYTH full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2024
Previous quarter: Q3 2023
IRONWOOD PHARMACEUTICALS INC SEC filings
IRONWOOD PHARMACEUTICALS INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 23254X201
Recent filing periods:
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
30 Sep 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.
Open SEC evidence
Opens Sarissa Capital Management LP's linked filing trail.
Comparable ownership
Top 5
Sarissa Capital Management LP
10%
LSV ASSET MANAGEMENT
4.4%
RENAISSANCE TECHNOLOGIES LLC
3.6%
DIMENSIONAL FUND ADVISORS LP
3.4%
CREDIT SUISSE AG/
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%
|
$157,835,700
16,390,000 shares
|
— | 30 Sep 2023 |
| LSV ASSET MANAGEMENT |
13F
Company
|
4.4%
|
$68,991,000
7,164,209 shares
|
— | 30 Sep 2023 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
3.6%
|
$55,853,000
5,799,898 shares
|
— | 30 Sep 2023 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
3.4%
|
$53,127,911
5,516,976 shares
|
— | 30 Sep 2023 |
| CREDIT SUISSE AG/ |
13F
Company
|
2.8%
|
$43,350,109
4,501,569 shares
|
— | 30 Sep 2023 |
| VICTORY CAPITAL MANAGEMENT INC |
13F
Company
|
2.7%
|
$42,436,829
4,406,732 shares
|
— | 30 Sep 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 Q4 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
21
Shares
1,297,352
Rows available
21
| 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 Q4 2023 vs Q3 2023 Across Filers
Q3 2023 holders
17
Q4 2023 holders
21
Holder diff
4
| Investor | Q3 2023 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q3 2023 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend