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what is this type of stock trade?
try to sell if today's google stock goes above 669$ This is Relative/Pegged-to-Primary Order with a Limit Price of $669 and an offset from National Best Offer of $0.00, but it is no different than an Market Order if the market price is $669 to begin with.  do not sell if the stock keeps climbing beyond 669 unless there is a down tick of 20cents is seen This is a Trailing Stop Order with a Trailing Amount of $0.20. It sells if the market price dropped $0.20 from the peak.  The two orders are contradictory. From your comments, I think the following is what you want: Submit Trailing Stop Order when market price is above $669.  Cancel Trailing Stop Order before the end of the day and Submit Relative/Pegged-to-Primary Order to Sell.