You should not be able to "sell" (or buy for that matte) if you're clicking anywhere but that collumn... I just took a rather huge loss because of that.
I would love the ability to purchase more of a stock without selling your current supply. Especially when it drops sharply and you don't want to take a huge loss...
 "Press The Button"){kind=icon}
 "Tangerine Tycoon"){kind=icon}
 "Destination Kepler"){kind=icon}