"Should I chase these trades after the open when I don't get filled?"

Here's a question from a long-time list member, S.R. ( name used with permission, lightly edited for clarity ): S.R.: A lot of my LOO (limit on open) orders get cancelled due to not hitting the limit order, and I'm trying to figure out if it's worth chasing after the open instead. How should I determine how much to chase? Dave: It depends on why the order was rejected, but here's how I would think…