Perceptive Advisors - MERRIMACK PHARMACEUTICALS IN ownership

MERRIMACK PHARMACEUTICALS IN's ticker is MACKXXXX and the CUSIP is 590328100. A total of 130 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q3 2016. The put-call ratio across all filers is 0.60 and the average weighting 0.1%.

Quarter-by-quarter ownership
Perceptive Advisors ownership history of MERRIMACK PHARMACEUTICALS IN
ValueSharesWeighting
Q4 2016$200,000
-35.7%
48,9100.0%0.01%
-30.0%
Q3 2016$311,000
+15.2%
48,910
-2.2%
0.02%
+5.3%
Q2 2016$270,000
-35.6%
50,0000.0%0.02%
-48.6%
Q1 2016$419,000
+6.1%
50,0000.0%0.04%
+27.6%
Q4 2015$395,00050,0000.03%
Other shareholders
MERRIMACK PHARMACEUTICALS IN shareholders Q3 2016
NameSharesValueWeighting ↓
Lagoda Investment Management, L.P. 2,357,558$20,063,0005.86%
GARRISON BRADFORD & ASSOCIATES INC 82,700$704,0000.78%
Portolan Capital Management 444,550$3,783,0000.50%
WESTFIELD CAPITAL MANAGEMENT CO LP 6,511,561$55,413,0000.39%
Opus Point Partners Management, LLC 62,009$528,0000.29%
Cannell & Co. 1,051,178$8,946,0000.29%
Tekla Capital Management LLC 853,787$7,266,0000.26%
Birchview Capital, LP 42,300$360,0000.23%
Eagle Ridge Investment Management 94,875$807,0000.21%
MARINER INVESTMENT GROUP LLC 95,090$809,0000.16%
View complete list of MERRIMACK PHARMACEUTICALS IN shareholders