Tamarack Advisers, LP - MEDICINES CO ownership

MEDICINES CO's ticker is and the CUSIP is 584688955. A total of 6 filers reported holding MEDICINES CO in Q1 2019. The put-call ratio across all filers is - and the average weighting 0.1%.

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 Q1 2019
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 15,400$585,0000.01%
Citadel Advisors 52,600$1,997,0000.00%
Timber Hill LLC 6,500$247,0000.00%
SIMPLEX TRADING, LLC 64$1,0000.00%
View complete list of MEDICINES CO shareholders