and further to your response, i got a PM from the buyer of those shares and was informed that they were an all or none order. Meaning that they wanted to buy all of the 100,000 shares of COLV or none at all. AON.
Obviously no one has a 100,000 share block to sell or willing to sell, so it came from a short sale. It was borrowed and sold to the person with the all or non (AON) order. Try it yourself and see. I bet if you get filled, it will show up as a short sale.