And actually, you have room to consider other icons like one for most widely held. Or one for newly purchased. Or one for recent IPO stocks. Things that would make it easier to scan our list of stocks in a big port.
So far my other issues are the faint font colors are a little hard on the eyes. And the timeouts are too fast. I hope that once you get a feel for server load you can push those out a further. Like a few hours at least.