Is there a way to do a limit so when one of my stocks sinks to a certain price, I'll automatically sell it? For example, yesterday I bought Cantinflas when it was cheap, made profit and as I was going to bed, it dropped a few cents. I wanted to give the instruction that if it sunk below $10 then it would auto-sell, so I'd be left with a profit and be protected from further devaluation. Any way to do this?