Tamarack Advisers, LP - MEDICINES CO ownership

MEDICINES CO's ticker is and the CUSIP is 584688955. A total of 5 filers reported holding MEDICINES CO in Q3 2018. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
Tamarack Advisers, LP ownership history of MEDICINES CO
ValueSharesWeighting
Q1 2019$34,000
-52.8%
1,714
-14.3%
0.01%
-38.1%
Q3 2018$72,0002,0000.02%
Other shareholders
MEDICINES CO shareholders Q3 2018
NameSharesValueWeighting ↓
SABBY MANAGEMENT, LLC 100$336,0000.02%
GROUP ONE TRADING, L.P. 17,000$572,0000.01%
Citadel Advisors 43,100$1,449,0000.00%
SIMPLEX TRADING, LLC 23$11,0000.00%
JPMORGAN CHASE & CO 56,800$1,910,0000.00%
View complete list of MEDICINES CO shareholders