Spark Investment Management LLC - XENOPORT INC ownership

XENOPORT INC's ticker is XNPT and the CUSIP is 98411C100. A total of 114 filers reported holding XENOPORT INC in Q2 2015. The put-call ratio across all filers is 5.38 and the average weighting 0.1%.

Quarter-by-quarter ownership
Spark Investment Management LLC ownership history of XENOPORT INC
ValueSharesWeighting
Q3 2015$580,000
+69.6%
167,700
+200.0%
0.08%
+56.2%
Q2 2015$342,000
-74.8%
55,900
-70.7%
0.05%
-74.7%
Q1 2015$1,359,000
+30.7%
191,000
+61.0%
0.19%
+8.6%
Q4 2014$1,040,000
+1055.6%
118,600
+606.0%
0.18%
+1150.0%
Q3 2014$90,00016,8000.01%
Other shareholders
XENOPORT INC shareholders Q2 2015
NameSharesValueWeighting ↓
Sand Grove Capital Management LLP 945,000$6,634,0004.15%
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) 11,572,125$81,468,0003.20%
FIRST NEW YORK SECURITIES LLC /NY 485,378$3,417,061,0002.10%
LONGFELLOW INVESTMENT MANAGEMENT CO LLC 656,595$4,622,0001.64%
S. MUOIO & CO. LLC 383,763$2,702,0001.27%
Kassirer Asset Management Corp 356,711$2,511,0001.18%
ALPINE ASSOCIATES MANAGEMENT INC. 2,708,948$19,071,0000.68%
HAVENS ADVISORS LLC 125,000$880,0000.67%
Rock Springs Capital Management LP 1,195,000$8,413,0000.62%
WATER ISLAND CAPITAL LLC 1,618,007$11,391,0000.56%
View complete list of XENOPORT INC shareholders