MWD volume over 150 is easily negotiated although of course it can't really be traded as quickly as IBM puts intraday However with CTAS at such low volume for options, I never got into any trade in CTAS since its report. Trying to establish a trading plan for CTAS but besides the typical move from 40 to 41, its difficult. That is why I prefer the repetitive and easier 'tried and true' trades that we have been following for weeks or days.