Optimer Pharmaceuticals, Inc. (OPTR)

[surf1944]

Avg Vol (3 month)3: 901,036
Avg Vol (10 day)3: 2,131,490
Shares Outstanding5: 46.60M
Float: 42.26M
% Held by Insiders1: 8.89%
% Held by Institutions1: 44.10%
Shares Short (as of Aug 31, 2011)3: 7.20M
Short Ratio (as of Aug 31, 2011)3: 7.90
Short % of Float (as of Aug 31, 2011)3: 19.30%
Shares Short (prior month)3: 7.07M

the shorts are helping the OPTR PPS