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 Q4 2016?

159 institutional investors reported IRWD - IRONWOOD PHARMACEUTICALS INC - Class A Common Stock for Q4 2016. Use the holders table for investor-level position and value details.

IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD)

CUSIP: 46333X108

Q4 2016 13F Holders as of 31 Dec 2016

Type / Class: Equity / Class A Common Stock
Shares outstanding: 163,317,295
Total 13F shares: 140,093,291
Share change: +647,206
Total reported value: $2,142,057,976
Put/Call ratio: 80%
Price per share: $15.29
Number of holders: 159
Value change: +$7,058,282
Number of buys: 88
Number of sells: 57

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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Newer quarter: Q1 2017
Previous quarter: Q3 2016

Recent filing periods for CUSIP 46333X108:

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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
FMR LLC	13F	Company	12%	19,490,004	$309,502,000	—	30 Sep 2016	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	11%	18,181,157	$288,717,000	—	30 Sep 2016	13F
JANUS HENDERSON INVESTORS US LLC	13F	Company	8.1%	13,197,320	$209,574,000	—	30 Sep 2016	13F
ORBIMED ADVISORS LLC	13F	Company	6.1%	9,949,000	$157,990,000	—	30 Sep 2016	13F
VANGUARD GROUP INC	13F	Company	5.9%	9,658,333	$153,374,000	—	30 Sep 2016	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	5.4%	8,770,893	$139,282,000	—	30 Sep 2016	13F
BlackRock Fund Advisors	13F	Company	3.5%	5,750,071	$91,311,000	—	30 Sep 2016	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	3.3%	5,424,600	$86,143,000	—	30 Sep 2016	13F
BRIDGER MANAGEMENT, LLC	13F	Company	2.4%	3,924,333	$62,318,000	—	30 Sep 2016	13F
STATE STREET CORP	13F	Company	2.1%	3,427,936	$54,440,000	—	30 Sep 2016	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2%	3,335,616	$52,970,000	—	30 Sep 2016	13F
Consonance Capital Management LP	13F	Company	2%	3,296,539	$52,349,000	—	30 Sep 2016	13F
EcoR1 Capital, LLC	13F	Company	1.7%	2,810,315	$44,628,000	—	30 Sep 2016	13F
EverPoint Asset Management, LLC	13F	Company	1.2%	1,900,000	$30,172,000	—	30 Sep 2016	13F
NORTHERN TRUST CORP	13F	Company	1.1%	1,765,420	$28,035,000	—	30 Sep 2016	13F
Gamma As Sector	13F	Individual	1.2%	1,960,548	$27,801,000	—	30 Sep 2016	13F
LOOMIS SAYLES & CO L P	13F	Company	0.95%	1,546,772	$24,563,000	—	30 Sep 2016	13F
CREDIT SUISSE AG/	13F	Company	0.91%	1,480,763	$23,515,000	—	30 Sep 2016	13F
Granahan Investment Management, LLC	13F	Company	0.86%	1,408,000	$22,359,000	—	30 Sep 2016	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.83%	1,356,137	$21,535,000	—	30 Sep 2016	13F
NORGES BANK	13F	Company	0.65%	1,060,542	$16,085,000	—	30 Sep 2016	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.6%	987,867	$15,686,000	—	30 Sep 2016	13F
Point72 Asset Management, L.P.	13F	Company	0.58%	953,927	$15,148,000	—	30 Sep 2016	13F
BLUE JAY CAPITAL MANAGEMENT, LLC	13F	Company	0.44%	725,000	$11,513,000	—	30 Sep 2016	13F
BNP Paribas Asset Management Holding S.A.	13F	Company	0.42%	681,828	$10,827,000	—	30 Sep 2016	13F
Asset Management One Co., Ltd.	13F	Company	0.38%	622,699	$9,589,000	—	30 Sep 2016	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.37%	600,000	$9,528,000	—	30 Sep 2016	13F
Bank of New York Mellon Corp	13F	Company	0.36%	581,227	$9,231,000	—	30 Sep 2016	13F
Spark Investment Management LLC	13F	Company	0.35%	568,100	$9,021,000	—	30 Sep 2016	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.34%	552,724	$8,778,000	—	30 Sep 2016	13F
D. E. Shaw & Co., Inc.	13F	Company	0.32%	519,023	$8,242,000	—	30 Sep 2016	13F
BlackRock Investment Management, LLC	13F	Company	0.3%	486,291	$7,722,000	—	30 Sep 2016	13F
Redmile Group, LLC	13F	Company	0.25%	408,462	$6,486,000	—	30 Sep 2016	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.24%	394,140	$6,259,000	—	30 Sep 2016	13F
OXFORD ASSET MANAGEMENT LLP	13F	Company	0.24%	391,981	$6,225,000	—	30 Sep 2016	13F
CLEARBRIDGE, LLC	13F	Company	0.24%	390,435	$6,200,000	—	30 Sep 2016	13F
DEUTSCHE BANK AG\	13F	Company	0.24%	388,530	$6,168,000	—	30 Sep 2016	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.21%	342,321	$5,436,000	—	30 Sep 2016	13F
BLACKROCK ADVISORS LLC	13F	Company	0.2%	330,843	$5,254,000	—	30 Sep 2016	13F
WADDELL & REED FINANCIAL INC	13F	Company	0.2%	323,900	$5,144,000	—	30 Sep 2016	13F
MACQUARIE GROUP LTD	13F	Company	0.2%	320,000	$5,082,000	—	30 Sep 2016	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.17%	273,810	$4,348,000	—	30 Sep 2016	13F
Fisher Asset Management, LLC	13F	Company	0.15%	242,450	$3,850,000	—	30 Sep 2016	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.14%	225,300	$3,578,000	—	30 Sep 2016	13F
CITADEL ADVISORS LLC	13F	Company	0.14%	223,997	$3,557,000	—	30 Sep 2016	13F
TEACHERS ADVISORS, LLC	13F	Company	0.14%	223,737	$3,553,000	—	30 Sep 2016	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.14%	223,660	$3,552,000	—	30 Sep 2016	13F
PICTET ASSET MANAGEMENT LTD	13F	Company	0.13%	220,300	$3,498,000	—	30 Sep 2016	13F
UNITED SERVICES AUTOMOBILE ASSOCIATION	13F	Company	0.13%	219,190	$3,481,000	—	30 Sep 2016	13F
Artal Group S.A.	13F	Company	0.13%	216,879	$3,444,000	—	30 Sep 2016	13F

Institutional Holders of IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD) as of Q4 2016

As of 31 Dec 2016, IRONWOOD PHARMACEUTICALS INC - Class A Common Stock (IRWD) was held by 159 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 140,093,291 shares. The largest 10 holders included FMR LLC, WELLINGTON MANAGEMENT GROUP LLP, PRICE T ROWE ASSOCIATES INC /MD/, JANUS CAPITAL MANAGEMENT LLC, VANGUARD GROUP INC, ORBIMED ADVISORS LLC, BlackRock Fund Advisors, ADAGE CAPITAL PARTNERS GP, L.L.C., STATE STREET CORP, and BlackRock Institutional Trust Company, N.A.. This page lists 159 institutional shareholders reporting positions in this security for the Q4 2016 filing period.

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

Compare Q4 2016 vs Q3 2016 Across Filers

Q3 2016 holders

150

Q4 2016 holders

159

Holder diff

Investor	Q3 2016 Shares	Q4 2016 Shares	Share Diff	Share Chg %	Q3 2016 Value $	Q4 2016 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.