Spark Investment Management LLC - ANTHERA PHARMACEUTICALS INC ownership

ANTHERA PHARMACEUTICALS INC's ticker is ANTH and the CUSIP is 03674U201. A total of 35 filers reported holding ANTHERA PHARMACEUTICALS INC in Q3 2014. The put-call ratio across all filers is - and the average weighting 0.1%.

Quarter-by-quarter ownership
Spark Investment Management LLC ownership history of ANTHERA PHARMACEUTICALS INC
ValueSharesWeighting
Q1 2015$73,000
-54.4%
16,400
-84.1%
0.01%
-63.0%
Q4 2014$160,000
+131.9%
103,400
+184.1%
0.03%
+170.0%
Q3 2014$69,00036,4000.01%
Other shareholders
ANTHERA PHARMACEUTICALS INC shareholders Q3 2014
NameSharesValueWeighting ↓
Abingworth LLP 861,723$1,174,0000.98%
R&F Capital Advisors LP 171,205$111,0000.04%
Rhenman & Partners Asset Management AB 200,000$130,0000.02%
Rock Springs Capital Management LP 380,000$247,0000.02%
WHITE PINE CAPITAL LLC 35,000$23,0000.01%
BVF INC/IL 62,292$40,0000.01%
Virtu KCG Holdings LLC 271,239$176,0000.00%
TURNER INVESTMENTS LLC 15,000$10,0000.00%
TWO SIGMA SECURITIES, LLC 11,736$8,0000.00%
Tower Research Capital LLC (TRC) 36,413$24,0000.00%
View complete list of ANTHERA PHARMACEUTICALS INC shareholders