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
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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
0/15
Latest evidence
30 Sep 2023
13F
Highest disclosed value: $243,006,457
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. has the largest disclosed position value at $243.01M.
0 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 BlackRock Finance, Inc.'s linked filing trail.
Disclosed position value
Top 5
BlackRock Finance, Inc.
$243.01M
Sarissa Capital Management LP
$157.84M
VANGUARD GROUP INC
$143.85M
STATE STREET CORP
$115.58M
LSV ASSET MANAGEMENT
$68.99M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
—
mixed-class rows
|
$243,006,457
25,234,624 shares
mixed-class rows
|
— | 30 Sep 2023 |
| Sarissa Capital Management LP |
13F
Company
|
—
denominator unverified
|
$157,835,700
16,390,000 shares
|
— | 30 Sep 2023 |
| VANGUARD GROUP INC |
13F
Company
|
—
mixed-class rows
|
$143,846,069
15,177,727 shares
mixed-class rows
|
— | 30 Sep 2023 |
| STATE STREET CORP |
13F
Company
|
—
mixed-class rows
|
$115,575,534
12,029,065 shares
mixed-class rows
|
— | 30 Sep 2023 |
| LSV ASSET MANAGEMENT |
13F
Company
|
—
denominator unverified
|
$68,991,000
7,164,209 shares
|
— | 30 Sep 2023 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
denominator unverified
|
$55,853,000
5,799,898 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 % |
|---|