Kraft Foods (KFT) overall option implied volatility of 18 is near its 26-week average of 17 into the company announcing that its Board of Directors intends to create two independent public companies.
Zipcar (ZIP) is recently up 12% in pre-open trading following better than expected Q2 results and guidance. Overall option implied volatility of 52 is near its 13-week average.
Dendreon (DNDN) is recently down 64% in pre-open trading following disappointing Provenge revenues. Overall option implied volatility of 54 is above its 26-week average of 46.
CBOE significant put volume increases
XOM 8/20/2011 72.5 15K contracts
TLT 8/20/2011 99 10K
GLD 8/20/2011 159 7K
BHP 8/20/2011 82.5 7K
XOM 8/20/2011 77.5 6K
C 9/17/2011 35 5K
NTAP 8/20/2011 45 5K
LEAP 1/19/2013 10 5K
AH 8/20/2011 30 4K