IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD)

CUSIP: 46333X108

Q4 2024 13F Holders as of 31 Dec 2024

Security identity
Security type / class
Equity / Class A Common Stock
Shares outstanding
163,317,295
Holder snapshot
Total 13F shares
164,213,918
Share change
+153,986
Total reported value
$727,463,387
Put/Call ratio
0.11%
Reported price per share
$4.43
Number of holders
222
Value change
+$1,737,232
Number of buys
106
Number of sells
112

Security key

46333X108

Report period

Q4 2024

Institutions

222

Top holders

10

IRWD full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2025 Previous quarter: Q3 2024 IRONWOOD PHARMACEUTICALS INC SEC filings IRONWOOD PHARMACEUTICALS INC company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

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.

Lead holder
RENAISSANCE TECHNOLOGIES LLC
13D/G signal
RENAISSANCE TECHNOLOGIES LLC
Evidence rows
15
Latest as of
30 Sep 2024
13F 13D/G Lead comparable stake: 5.4% 13D/G row: RENAISSANCE TECHNOLOGIES LLC Showing 1-6 of 15 holder rows.
Holder Evidence Ownership % Position 12M Net Δ As of
RENAISSANCE TECHNOLOGIES LLC
13F 13D/G
Company
13F 13D/G
5.4%
from 13D/G
$35,420,456
8,597,198 shares
 — 30 Sep 2024
Sarissa Capital Management LP
13F
Company
13F
10%
$67,526,800
16,390,000 shares
 — 30 Sep 2024
Pacer Advisors, Inc.
13F
Company
13F
6.9%
$46,472,867
11,279,822 shares
 — 30 Sep 2024
ARMISTICE CAPITAL, LLC
13F
Company
13F
5%
$33,784,000
8,200,000 shares
 — 30 Sep 2024
LSV ASSET MANAGEMENT
13F
Company
13F
3.1%
$20,813,000
5,051,601 shares
 — 30 Sep 2024
BRAIDWELL LP
13F
Company
13F
2.7%
$18,285,516
4,438,232 shares
 — 30 Sep 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 Q4 2024

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
222
Shares
164,213,918
Rows available
222
Investor Option Weight % Change % Reported value * Price Shares Share Change Activity Report Period

* 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 failed the local validity check.

Compare Q4 2024 vs Q3 2024 Across Filers

Q3 2024 holders
218
Q4 2024 holders
222
Holder diff
4
Investor Q3 2024 Shares Q4 2024 Shares Share Diff Share Chg % Q3 2024 value Q4 2024 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .