PROSPECTOR PARTNERS LLC - MEDICINES CO ownership

MEDICINES CO's ticker is and the CUSIP is 584688AC9. A total of 28 filers reported holding MEDICINES CO in Q4 2015. The put-call ratio across all filers is - and the average weighting 0.3%.

Quarter-by-quarter ownership
PROSPECTOR PARTNERS LLC ownership history of MEDICINES CO
ValueSharesWeighting
Q4 2016$306,000
-8.1%
232,0000.0%0.04%
-15.1%
Q3 2016$333,000
-25.0%
232,000
-30.1%
0.05%
-29.3%
Q2 2016$444,000
-76.5%
332,000
-77.6%
0.08%
-77.0%
Q1 2016$1,887,000
-10.7%
1,485,0000.0%0.33%
-13.3%
Q4 2015$2,113,000
-33.6%
1,485,000
-32.0%
0.38%
-17.9%
Q3 2015$3,181,000
+19.6%
2,185,000
-2.2%
0.46%
+45.4%
Q2 2015$2,660,000
-46.6%
2,235,000
-46.8%
0.32%
-16.0%
Q1 2015$4,980,0004,200,0000.38%
Other shareholders
MEDICINES CO shareholders Q4 2015
NameSharesValueWeighting ↓
CSS LLC/IL 24,735,000$35,399,0002.10%
BASSO CAPITAL MANAGEMENT, L.P. 6,400,000$9,140,0001.35%
EQUITEC SPECIALISTS, LLC 2,500,000$3,558,0001.28%
TENOR CAPITAL MANAGEMENT Co., L.P. 2,500,000$3,581,0000.81%
WOLVERINE ASSET MANAGEMENT LLC 24,424,000$34,958,0000.75%
MACKAY SHIELDS LLC 7,145,000$10,204,0000.55%
SSI INVESTMENT MANAGEMENT LLC 3,413,000$4,857,0000.50%
IRON Financial LLC 380,000$541,0000.46%
AQR Arbitrage LLC 27,705,000$39,566,0000.44%
PROSPECTOR PARTNERS LLC 1,485,000$2,113,0000.38%
View complete list of MEDICINES CO shareholders