What does CUSIP 46333X108 represent in this 13F holders report?

CUSIP 46333X108 is the security identifier for IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock used to aggregate holder disclosures.

How many institutions held IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock in Q3 2021?

216 institutional investors reported IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock for Q3 2021. Use the holders table for investor-level position and value details.

IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD)

CUSIP: 46333X108

Q3 2021 13F Holders as of 30 Sep 2021

Type / Class: Equity / Class A Common Stock
Shares outstanding: 163,317,295
Total 13F shares: 177,433,352
Share change: +2,899,206
Total reported value: $2,315,405,743
Put/Call ratio: 20%
Price per share: $13.06
Number of holders: 216
Value change: +$38,243,173
Number of buys: 111
Number of sells: 84

Quarterly Holders Quick Answers

What is CUSIP 46333X108?
CUSIP 46333X108 identifies IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q4 2021
Previous quarter: Q2 2021

Recent filing periods for CUSIP 46333X108:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (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
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	13%	21,094,651	$271,488,000	—	30 Jun 2021	13F
BROWN CAPITAL MANAGEMENT LLC	13F	Company	11%	18,484,759	$237,899,000	—	30 Jun 2021	13F
Sarissa Capital Management LP	13F	Company	10%	16,390,000	$210,939,000	—	30 Jun 2021	13F
VANGUARD GROUP INC	13F	Company	— mixed-class rows	14,048,719 mixed-class rows	$180,407,000	—	30 Jun 2021	13F
BlackRock Finance, Inc.	13F	Company	— mixed-class rows	11,561,751 mixed-class rows	$148,773,000	—	30 Jun 2021	13F
Camber Capital Management LP	13F	Company	4.6%	7,500,000	$96,525,000	—	30 Jun 2021	13F
STATE STREET CORP	13F	Company	— mixed-class rows	6,850,369 mixed-class rows	$88,046,000	—	30 Jun 2021	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	3.8%	6,258,873	$80,552,000	—	30 Jun 2021	13F
PUTNAM INVESTMENTS LLC	13F	Company	2.9%	4,737,415	$60,971,000	—	30 Jun 2021	13F
LSV ASSET MANAGEMENT	13F	Company	2.7%	4,364,227	$56,167,000	—	30 Jun 2021	13F
CREDIT SUISSE AG/	13F	Company	2.5%	4,056,047	$52,201,000	—	30 Jun 2021	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	2.1%	3,438,053	$44,248,000	—	30 Jun 2021	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.9%	3,031,571	$39,016,000	—	30 Jun 2021	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	— mixed-class rows	2,799,986 mixed-class rows	$35,922,000	—	30 Jun 2021	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.6%	2,679,530	$34,485,000	—	30 Jun 2021	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	1.4%	2,358,777	$30,357,000	—	30 Jun 2021	13F
Nuveen Asset Management, LLC	13F	Company	1.4%	2,307,605	$29,699,000	—	30 Jun 2021	13F
BRIDGER MANAGEMENT, LLC	13F	Company	1.2%	2,035,114	$26,192,000	—	30 Jun 2021	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	1.2%	1,905,275	$24,520,889	—	30 Jun 2021	13F
NORGES BANK	13F	Company	1.1%	1,781,953	$22,934,000	—	30 Jun 2021	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.1%	1,758,953	$22,638,000	—	30 Jun 2021	13F
NORTHERN TRUST CORP	13F	Company	1.1%	1,730,416	$22,271,000	—	30 Jun 2021	13F
JUPITER ASSET MANAGEMENT LTD	13F	Company	0.95%	1,547,452	$19,900,000	—	30 Jun 2021	13F
Atle Fund Management AB	13F	Company	0.93%	1,520,000	$19,562,000	—	30 Jun 2021	13F
MORGAN STANLEY	13F	Company	— mixed-class rows	1,455,556 mixed-class rows	$18,729,000	—	30 Jun 2021	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.72%	1,181,188	$15,202,000	—	30 Jun 2021	13F
GLENMEDE TRUST CO NA	13F	Company	0.67%	1,097,813	$14,127,000	—	30 Jun 2021	13F
PICTET ASSET MANAGEMENT LTD	13F	Company	0.65%	1,058,856	$13,627,000	—	30 Jun 2021	13F
GREAT LAKES ADVISORS, LLC	13F	Company	0.6%	985,905	$12,689,000	—	30 Jun 2021	13F
D. E. Shaw & Co., Inc.	13F	Company	0.6%	984,238	$12,667,000	—	30 Jun 2021	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.59%	960,526	$12,362,000	—	30 Jun 2021	13F
JPMORGAN CHASE & CO	13F	Company	0.56%	922,467	$11,872,000	—	30 Jun 2021	13F
Bank of New York Mellon Corp	13F	Company	0.5%	819,452	$10,547,000	—	30 Jun 2021	13F
Invesco Ltd.	13F	Company	0.44%	714,201	$9,192,000	—	30 Jun 2021	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.41%	675,170	$8,689,000	—	30 Jun 2021	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	0.41%	668,161	$8,599,000	—	30 Jun 2021	13F
13D Management LLC	13F	Company	0.4%	650,455	$8,371,000	—	30 Jun 2021	13F
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY	13F	Company	0.33%	542,131	$6,977,000	—	30 Jun 2021	13F
CITIGROUP INC	13F	Company	0.33%	538,191	$6,928,000	—	30 Jun 2021	13F
COMERICA BANK	13F	Company	0.32%	519,697	$6,756,000	—	30 Jun 2021	13F
HealthCor Management, L.P.	13F	Company	0.32%	522,712	$6,727,000	—	30 Jun 2021	13F
Michael F. Price	13F	Individual	0.32%	520,000	$6,692,000	—	30 Jun 2021	13F
Islet Management, LP	13F	Company	0.31%	500,000	$6,435,000	—	30 Jun 2021	13F
FEDERATED HERMES, INC.	13F	Company	0.29%	480,775	$6,188,000	—	30 Jun 2021	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.28%	460,688	$5,929,000	—	30 Jun 2021	13F
AXA S.A.	13F	Company	0.27%	432,900	$5,571,000	—	30 Jun 2021	13F
MARSHALL WACE, LLP	13F	Company	0.26%	418,870	$5,391,000	—	30 Jun 2021	13F
UBS Group AG	13F	Company	— mixed-class rows	402,595 mixed-class rows	$5,152,000	—	30 Jun 2021	13F
Man Group plc	13F	Company	0.24%	395,034	$5,084,000	—	30 Jun 2021	13F
ExodusPoint Capital Management, LP	13F	Company	0.24%	392,341	$5,049,000	—	30 Jun 2021	13F

Institutional Holders of IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD) as of Q3 2021

As of 30 Sep 2021, IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD) was held by 216 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 177,433,352 shares. The largest 10 holders included WELLINGTON MANAGEMENT GROUP LLP, BROWN CAPITAL MANAGEMENT LLC, Sarissa Capital Management LP, VANGUARD GROUP INC, BlackRock Inc., WESTFIELD CAPITAL MANAGEMENT CO LP, LSV ASSET MANAGEMENT, STATE STREET CORP, Camber Capital Management LP, and PUTNAM INVESTMENTS LLC. This page lists 216 institutional shareholders reporting positions in this security for the Q3 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q3 2021 vs Q2 2021 Across Filers

Q2 2021 holders

200

Q3 2021 holders

216

Holder diff

Investor	Q2 2021 Shares	Q3 2021 Shares	Share Diff	Share Chg %	Q2 2021 Value $	Q3 2021 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.