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Ironwood Pharmaceuticals

Name Holding Trade Value Shares
Change
Change in
Stake
Wellington Management Group
1
Wellington Management Group
Massachusetts
$223M +$4M +340,598 +2%
BCM
2
Brown Capital Management
Maryland
$181M +$703K +59,796 +0.3%
Vanguard Group
3
Vanguard Group
Pennsylvania
$165M -$3.5M -297,751 -2%
SCM
4
Sarissa Capital Management
Connecticut
$136M +$37.8M +3,218,000 +31%
BlackRock
5
BlackRock
New York
$135M -$2.37M -201,279 -1%
Fidelity Investments
6
Fidelity Investments
Massachusetts
$112M +$2.96M +251,724 +2%
UBS AM
7
UBS AM
Illinois
$79.3M -$10.4M -888,342 -10%
Janus Henderson Group
8
Janus Henderson Group
$72.8M -$12.6M -1,073,671 -13%
State Street
9
State Street
Massachusetts
$59.1M +$919K +78,192 +1%
Westfield Capital Management
10
Westfield Capital Management
Massachusetts
$48.3M +$27.6M +2,348,030 +96%
EC
11
EcoR1 Capital
California
$44.3M +$257K +21,828 +0.5%
CS
12
Credit Suisse
Switzerland
$34.6M +$4.26M +362,615 +12%
MP
13
MFN Partners
Massachusetts
$34M -$36.1M -3,069,541 -48%
Norges Bank
14
Norges Bank
Norway
$25.4M -$720K -61,274 -2%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$23.1M +$1.16M +98,558 +4%
Northern Trust
16
Northern Trust
Illinois
$20.7M +$551K +46,912 +2%
New York State Common Retirement Fund
17
New York State Common Retirement Fund
New York
$20.6M
Capital World Investors
18
Capital World Investors
California
$20.5M
BNP Paribas Asset Management
19
BNP Paribas Asset Management
France
$19.2M -$54.3K -4,619 -0.2%
PI
20
Putnam Investments
Massachusetts
$18.3M +$21.3M +1,809,332 New
D.E. Shaw & Co
21
D.E. Shaw & Co
New York
$16.8M +$2.39M +203,163 +14%
BM
22
Bridger Management
New York
$15.6M +$18.2M +1,544,590 New
Renaissance Technologies
23
Renaissance Technologies
New York
$15.1M +$8.75M +744,763 +99%
Adage Capital Partners
24
Adage Capital Partners
Massachusetts
$13.9M
SPC
25
Slate Path Capital
New York
$13.5M +$15.7M +1,340,000 New