Eyeball method goes by what's in play within the realm of possibility. It's also possible you're talking about Sept. while we're talking about October: <A HREF="http://finance.yahoo.com/q/os?s=QQQ&m=2003-10-17" target="_new">http://finance.yahoo.com/q/os?s=QQQ&m=2003-10-17</A> Remember, Yahoo numbers are not always correct for options.