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 2015?

129 institutional investors reported IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock for Q3 2015. Use the holders table for investor-level position and value details.

IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD)

CUSIP: 46333X108

Q3 2015 13F Holders as of 30 Sep 2015

Type / Class: Equity / Class A Common Stock
Shares outstanding: 163,317,295
Total 13F shares: 141,087,024
Share change: -2,458,158
Total reported value: $1,469,578,326
Put/Call ratio: 135%
Price per share: $10.42
Number of holders: 129
Value change: -$31,592,141
Number of buys: 58
Number of sells: 62

Security key

46333X108

Report period

Q3 2015

Institutions

129

Top holders

IRWD full security history Newer quarter: Q4 2015 Previous quarter: Q2 2015 IRONWOOD PHARMACEUTICALS INC SEC filings IRONWOOD PHARMACEUTICALS INC company facts

Broader feeds

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

Reporting periods

Holder history for CUSIP 46333X108

Newer quarter: Q4 2015 Previous quarter: Q2 2015

Recent filing periods:

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

Ownership snapshot

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. Start with the largest verified stakes, then open the linked filing trail.

Lead holder

FMR LLC

13D/G signal

—

Evidence rows

Latest as of

30 Jun 2015

13F Lead comparable stake: 12%

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
FMR LLC	13F Company 13F	12%	$238,100,000 19,742,935 shares	—	30 Jun 2015
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	11%	$212,589,000 17,627,533 shares	—	30 Jun 2015
JANUS HENDERSON INVESTORS US LLC	13F Company 13F	9.5%	$187,878,000 15,579,815 shares	—	30 Jun 2015
ORBIMED ADVISORS LLC	13F Company 13F	7.6%	$149,574,000 12,402,500 shares	—	30 Jun 2015
VANGUARD GROUP INC	13F Company 13F	5.1%	$100,272,000 8,314,442 shares	—	30 Jun 2015
DEUTSCHE BANK AG\	13F Company 13F	4.6%	$91,231,000 7,565,022 shares	—	30 Jun 2015
MORGAN STANLEY	13F Company 13F	3.9%	$76,143,000 6,313,653 shares	—	30 Jun 2015
BlackRock Fund Advisors	13F Company 13F	3.6%	$70,994,000 5,886,692 shares	—	30 Jun 2015
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	3.2%	$62,588,000 5,189,700 shares	—	30 Jun 2015
STATE OF WISCONSIN INVESTMENT BOARD	13F Company 13F	3%	$59,793,000 4,957,980 shares	—	30 Jun 2015
STATE STREET CORP	13F Company 13F	2.5%	$48,846,000 4,050,198 shares	—	30 Jun 2015
BlackRock Institutional Trust Company, N.A.	13F Company 13F	1.9%	$37,238,000 3,087,689 shares	—	30 Jun 2015
BRIDGER MANAGEMENT, LLC	13F Company 13F	1.5%	$30,271,000 2,510,053 shares	—	30 Jun 2015
BVF INC/IL	13F Company 13F	1.3%	$26,184,000 2,171,108 shares	—	30 Jun 2015
Capital World Investors	13F Company 13F	0.9%	$17,789,000 1,475,000 shares	—	30 Jun 2015
EverPoint Asset Management, LLC	13F Company 13F	0.89%	$17,487,000 1,450,000 shares	—	30 Jun 2015
CREDIT SUISSE AG/	13F Company 13F	0.89%	$17,433,000 1,445,558 shares	—	30 Jun 2015
Gamma As Sector	13F Individual 13F	0.86%	$16,919,000 1,402,891 shares	—	30 Jun 2015
Point72 Asset Management, L.P.	13F Company 13F	0.84%	$16,626,000 1,378,600 shares	—	30 Jun 2015
NORTHERN TRUST CORP	13F Company 13F	0.78%	$15,444,000 1,280,587 shares	—	30 Jun 2015
NORGES BANK	13F Company 13F	0.63%	$12,406,000 1,028,680 shares	—	30 Jun 2015
MILLENNIUM MANAGEMENT LLC	13F Company 13F	0.61%	$11,954,000 991,195 shares	—	30 Jun 2015
Asset Management One Co., Ltd.	13F Company 13F	0.59%	$11,100,000 957,726 shares	—	30 Jun 2015
FRED ALGER MANAGEMENT, LLC	13F Company 13F	0.54%	$10,564,000 875,976 shares	—	30 Jun 2015
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.47%	$9,288,000 770,255 shares	—	30 Jun 2015
Tekla Capital Management LLC	13F Company 13F	0.47%	$9,263,000 768,050 shares	—	30 Jun 2015
Bank of New York Mellon Corp	13F Company 13F	0.42%	$8,334,000 691,079 shares	—	30 Jun 2015
D. E. Shaw & Co., Inc.	13F Company 13F	0.36%	$7,105,000 589,108 shares	—	30 Jun 2015
GOLDMAN SACHS GROUP INC	13F Company 13F	0.36%	$7,000,000 580,397 shares	—	30 Jun 2015
GUGGENHEIM CAPITAL LLC	13F Company 13F	0.33%	$6,564,000 544,317 shares	—	30 Jun 2015
JPMORGAN CHASE & CO	13F Company 13F	0.32%	$6,285,000 521,210 shares	—	30 Jun 2015
Lombard Odier Asset Management (USA) Corp	13F Company 13F	0.31%	$6,117,000 507,224 shares	—	30 Jun 2015
PERCEPTIVE ADVISORS LLC	13F Company 13F	0.3%	$5,953,000 493,600 shares	—	30 Jun 2015
TIAA CREF INVESTMENT MANAGEMENT LLC	13F Company 13F	0.27%	$5,330,000 441,935 shares	—	30 Jun 2015
HIGHBRIDGE CAPITAL MANAGEMENT LLC	13F Company 13F	0.26%	$5,145,000 426,600 shares	—	30 Jun 2015
BlackRock Investment Management, LLC	13F Company 13F	0.26%	$5,129,000 425,274 shares	—	30 Jun 2015
AXA S.A.	13F Company 13F	0.26%	$5,105,000 423,285 shares	—	30 Jun 2015
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.24%	$4,766,000 395,135 shares	—	30 Jun 2015
JANUS HENDERSON GROUP PLC	13F Company 13F	0.23%	$4,571,000 379,000 shares	—	30 Jun 2015
Ghost Tree Capital, LLC	13F Company 13F	0.21%	$4,221,000 350,000 shares	—	30 Jun 2015
THRIVENT FINANCIAL FOR LUTHERANS	13F Company 13F	0.2%	$3,968,000 328,986 shares	—	30 Jun 2015
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F Company 13F	0.16%	$3,175,000 263,300 shares	—	30 Jun 2015
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F Company 13F	0.16%	$3,069,000 254,445 shares	—	30 Jun 2015
Sio Capital Management, LLC	13F Company 13F	0.15%	$2,858,000 237,000 shares	—	30 Jun 2015
BANK OF AMERICA CORP /DE/	13F Company 13F	0.14%	$2,850,000 236,325 shares	—	30 Jun 2015
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F Company 13F	0.14%	$2,774,000 230,011 shares	—	30 Jun 2015
Artal Group S.A.	13F Company 13F	0.13%	$2,616,000 216,879 shares	—	30 Jun 2015
ALLIANCEBERNSTEIN L.P.	13F Company 13F	0.13%	$2,513,000 208,400 shares	—	30 Jun 2015
Spark Investment Management LLC	13F Company 13F	0.13%	$2,511,000 208,400 shares	—	30 Jun 2015
TEACHERS ADVISORS, LLC	13F Company 13F	0.12%	$2,388,000 197,975 shares	—	30 Jun 2015

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 Q3 2015

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

Institutions

129

141,087,024

Rows loaded

129

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

Compare Q3 2015 vs Q2 2015 Across Filers

Q2 2015 holders

137

Q3 2015 holders

129

Holder diff

-8

Investor	Q2 2015 Shares	Q3 2015 Shares	Share Diff	Share Chg %	Q2 2015 Value $	Q3 2015 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.