ESSEX INVESTMENT MANAGEMENT CO LLC - SPARK THERAPEUTICS INC ownership

SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 170 filers reported holding SPARK THERAPEUTICS INC in Q3 2017. The put-call ratio across all filers is 1.40 and the average weighting 0.3%.

Quarter-by-quarter ownership
ESSEX INVESTMENT MANAGEMENT CO LLC ownership history of SPARK THERAPEUTICS INC
ValueSharesWeighting
Q3 2017$472,000
-27.0%
5,298
-51.1%
0.06%
-31.2%
Q2 2017$647,000
+122.3%
10,834
+55.5%
0.09%
+93.8%
Q3 2015$291,000
-30.7%
6,9660.0%0.05%
-23.8%
Q2 2015$420,0006,9660.06%
Other shareholders
SPARK THERAPEUTICS INC shareholders Q3 2017
NameSharesValueWeighting ↓
Casdin Capital, LLC 170,000$5,017,0005.76%
Rock Springs Capital Management LP 580,500$17,131,0001.44%
Opus Point Partners Management, LLC 31,500$930,0000.72%
Bain Capital Public Equity Management, LLC 424,114$12,516,0000.46%
Baker Brothers Advisors 1,262,382$37,253,0000.39%
MARINER INVESTMENT GROUP LLC 34,350$1,014,0000.28%
Eventide Asset Management 150,000$4,427,0000.25%
Virtus ETF Advisers LLC 5,251$155,0000.21%
EMERALD ADVISERS, LLC 123,970$3,658,0000.18%
Endurant Capital Management LP 17,500$516,0000.17%
View complete list of SPARK THERAPEUTICS INC shareholders