IRONWOOD PHARMACEUTICALS INC - Class A Common Stock, $0.001 par value (IRWD)
CUSIP: 46333X108
Q2 2025 13F Holders as of 30 Jun 2025
- Type / Class
- Equity / Class A Common Stock, $0.001 par value
- Shares outstanding
- 162,843,862
- Total 13F shares
- 146,448,573
- Share change
- -8,784,469
- Total reported value
- $105,056,220
- Put/Call ratio
- 0%
- Price per share
- $0.72
- Number of holders
- 151
- Value change
- -$19,990,203
- Number of buys
- 77
- Number of sells
- 116
Quarterly Holders Quick Answers
What is CUSIP 46333X108?
CUSIP 46333X108 identifies IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock, $0.001 par value in SEC institutional holdings data.
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Related Filing Research
- Latest 13F filings for newly reported positions.
- Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
- Latest 10-Q/10-K reports for financial context tied to this issuer.
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Recent filing periods for CUSIP 46333X108:
Top shareholders of IRWD - 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. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Sarissa Capital Management LP |
13F
|
Company |
10%
|
16,390,000
|
$24,093,300 | — | 31 Mar 2025 | |
| VANGUARD GROUP INC |
13F
13D/G
|
Company · The Vanguard Group |
10%
from 13D/G
|
15,696,161
|
$23,073,356 | — | 31 Mar 2025 | |
| ARMISTICE CAPITAL, LLC |
13F
13D/G
|
Company |
9.9%
from 13D/G
|
13,700,000
|
$20,139,000 | — | 31 Mar 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
7.1%
from 13D/G
|
11,878,924
|
$17,462,019 | — | 31 Mar 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
13D/G
|
Company |
5.4%
from 13D/G
|
9,940,492
|
$14,612,523 | — | 31 Mar 2025 | |
| BRAIDWELL LP |
13F
|
Company |
4.1%
|
6,622,584
|
$9,735,198 | — | 31 Mar 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
3.9%
|
6,359,682
|
$9,348,733 | — | 31 Mar 2025 | |
| Kynam Capital Management, LP |
13F
|
Company |
3.6%
|
5,822,938
|
$8,559,719 | — | 31 Mar 2025 | |
| LSV ASSET MANAGEMENT |
13F
|
Company |
2.5%
|
3,997,801
|
$5,877,000 | — | 31 Mar 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
2.2%
|
3,510,117
|
$5,159,872 | — | 31 Mar 2025 | |
| STATE STREET CORP |
13F
13D/G
|
Company · STATE STREET CORPORATION |
2.2%
from 13D/G
|
3,498,289
|
$5,142,485 | — | 31 Mar 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.1%
|
3,418,089
|
$5,025,880 | — | 31 Mar 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
2%
|
3,307,059
|
$4,861,377 | — | 31 Mar 2025 | |
| Jason Rickard |
3/4/5
|
SVP, Chief Operating Officer |
—
mixed-class rows
|
398,150
mixed-class rows
|
$4,210,976 | — | 08 Mar 2023 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.6%
|
2,647,015
|
$3,891,112 | — | 31 Mar 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.6%
|
2,645,189
|
$3,878,000 | — | 31 Mar 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.5%
|
2,523,875
|
$3,710,096 | — | 31 Mar 2025 | |
| Edward P. Owens |
3/4/5
|
Director |
—
class O/S missing
|
281,720
|
$3,152,447 | — | 02 Jun 2021 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
1.2%
|
1,884,600
|
$2,770,362 | — | 31 Mar 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
1,863,221
|
$2,738,935 | — | 31 Mar 2025 | |
| Pacer Advisors, Inc. |
13F
13D/G
|
Company · Pacer US Small Cap Cash Cows ETF |
1.1%
from 13D/G
|
1,789,098
|
$2,629,974 | — | 31 Mar 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1%
|
1,702,633
|
$2,502,870 | — | 31 Mar 2025 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
0.97%
|
1,580,320
|
$2,323,070 | — | 31 Mar 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.97%
|
1,575,416
|
$2,315,861 | — | 31 Mar 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.95%
|
1,554,154
|
$2,284,606 | — | 31 Mar 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.94%
|
1,532,565
|
$2,252,871 | — | 31 Mar 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.91%
|
1,488,044
|
$2,187,425 | — | 31 Mar 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.88%
|
1,428,516
|
$2,099,919 | — | 31 Mar 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.86%
|
1,406,534
|
$2,067,606 | — | 31 Mar 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.8%
|
1,305,362
|
$1,918,882 | — | 31 Mar 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.75%
|
1,227,196
|
$1,803,978 | — | 31 Mar 2025 | |
| JUPITER ASSET MANAGEMENT LTD |
13F
|
Company |
0.75%
|
1,223,275
|
$1,798,214 | — | 31 Mar 2025 | |
| Sio Capital Management, LLC |
13F
|
Company |
0.62%
|
1,017,616
|
$1,495,896 | — | 31 Mar 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.58%
|
940,548
|
$1,382,606 | — | 31 Mar 2025 | |
| Voleon Capital Management LP |
13F
|
Company |
0.53%
|
870,629
|
$1,279,825 | — | 31 Mar 2025 | |
| Sravan Kumar Emany |
3/4/5
|
SVP, COO and CFO |
—
class O/S missing
|
309,572
|
$1,263,054 | — | 18 Nov 2024 | |
| Andrew Davis |
3/4/5
|
SVP, Chief Business Officer |
—
class O/S missing
|
284,685
|
$1,161,515 | — | 18 Nov 2024 | |
| Mariner, LLC |
13F
|
Company |
0.46%
|
750,000
|
$1,102,500 | — | 31 Mar 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.45%
|
735,436
|
$1,081,091 | — | 31 Mar 2025 | |
| Lawrence S. Olanoff |
3/4/5
|
Director |
—
class O/S missing
|
91,395
|
$1,022,710 | — | 02 Jun 2021 | |
| LOS ANGELES CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.42%
|
687,787
|
$1,011,047 | — | 31 Mar 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.4%
|
648,267
|
$952,952 | — | 31 Mar 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.34%
|
557,521
|
$819,557 | — | 31 Mar 2025 | |
| XTX Topco Ltd |
13F
|
Company |
0.34%
|
552,613
|
$812,341 | — | 31 Mar 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.32%
|
524,676
|
$771,000 | — | 31 Mar 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.31%
|
499,613
|
$734,431 | — | 31 Mar 2025 | |
| ExodusPoint Capital Management, LP |
13F
|
Company |
0.3%
|
494,620
|
$727,000 | — | 31 Mar 2025 | |
| FMR LLC |
13F
|
Company |
0.29%
|
479,741
|
$705,219 | — | 31 Mar 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.29%
|
471,361
|
$692,901 | — | 31 Mar 2025 | |
| Walleye Capital LLC |
13F
|
Company |
0.26%
|
431,410
|
$634,173 | — | 31 Mar 2025 |
Institutional Holders of IRONWOOD PHARMACEUTICALS INC - Class A Common Stock, $0.001 par value (IRWD) as of Q2 2025
As of 30 Jun 2025,
IRONWOOD PHARMACEUTICALS INC - Class A Common Stock, $0.001 par value (IRWD) was held by
151 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
146,448,573 shares.
The largest 10 holders included
VANGUARD GROUP INC, ARMISTICE CAPITAL, LLC, Sarissa Capital Management LP, BlackRock, Inc., RENAISSANCE TECHNOLOGIES LLC, ACADIAN ASSET MANAGEMENT LLC, AQR CAPITAL MANAGEMENT LLC, Kynam Capital Management, LP, MARSHALL WACE, LLP, and CHARLES SCHWAB INVESTMENT MANAGEMENT INC.
This page lists
150
institutional shareholders reporting positions in this security
for the Q2 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
200
Q2 2025 holders
151
Holder diff
-49
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 Value $ | Q2 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.