FORTALEZA ASSET MANAGEMENT INC/ - ALKERMES PLC ownership

ALKERMES PLC's ticker is ALKS and the CUSIP is G01767105. A total of 242 filers reported holding ALKERMES PLC in Q1 2016. The put-call ratio across all filers is 0.90 and the average weighting 0.3%.

Quarter-by-quarter ownership
FORTALEZA ASSET MANAGEMENT INC/ ownership history of ALKERMES PLC
ValueSharesWeighting
Q4 2015$4,000
+33.3%
500.0%0.00%0.0%
Q3 2015$3,0000.0%500.0%0.00%0.0%
Q2 2015$3,0000.0%500.0%0.00%0.0%
Q1 2015$3,000
-99.5%
50
-99.8%
0.00%
-99.4%
Q2 2013$617,00021,5200.36%
Other shareholders
ALKERMES PLC shareholders Q1 2016
NameSharesValueWeighting ↓
Meditor Group Ltd 1,030,639$51,872,00038.88%
Tamarack Capital Management, LLC 525,000$25,573,0005.22%
Gerry Farber, LLC 83,000$4,177,0004.33%
ROANOKE ASSET MANAGEMENT CORP/ NY 140,375$7,065,0002.71%
Rhenman & Partners Asset Management AB 168,000$8,455,0002.51%
First Light Asset Management, LLC 63,684$3,205,0002.16%
Iguana Healthcare Management, LLC 85,000$4,278,0002.00%
Granahan Investment Management 1,057,300$53,214,0001.55%
Cormorant Asset Management, LP 100,000$5,033,0001.33%
FRONTIER CAPITAL MANAGEMENT CO LLC 3,602,431$181,310,0001.33%
View complete list of ALKERMES PLC shareholders