CASTLEARK MANAGEMENT LLC - MEDICINES CO ownership

MEDICINES CO's ticker is MDCO and the CUSIP is 584688105. A total of 182 filers reported holding MEDICINES CO in Q4 2013. The put-call ratio across all filers is 0.70 and the average weighting 0.2%.

Quarter-by-quarter ownership
CASTLEARK MANAGEMENT LLC ownership history of MEDICINES CO
ValueSharesWeighting
Q3 2016$8,623,000
+9.2%
228,495
+11.8%
0.26%
+14.0%
Q4 2013$7,896,000204,4450.23%
Other shareholders
MEDICINES CO shareholders Q4 2013
NameSharesValueWeighting ↓
Sarissa Capital Management LP 1,361,900$38,964,0008.97%
Camber Capital Management LP 2,500,000$71,525,0004.87%
SECTOR GAMMA AS 450,750$12,896,0003.29%
BRIDGER MANAGEMENT, LLC 2,491,011$71,268,0002.25%
ASHFORD CAPITAL MANAGEMENT INC 705,800$20,192,0002.21%
Signpost Capital Advisors, LP 254,591$7,284,0002.07%
RA Capital Management 705,925$20,197,0002.03%
IMA Advisory Services, Inc. 115,310$3,299,0001.57%
Partner Investment Management, L.P. 37,510$1,073,0001.51%
Elk Creek Partners, LLC 378,154$10,819,0000.97%
View complete list of MEDICINES CO shareholders