Quote from JoshDance:
Yeah definitely, hope it works for you. Regarding SPX vs. ES volume, it's only a minor interesting note that they can be different. I don't place a lot of emphasis on it. My point was simply that you would expect volume to be low this week. So just like large volume at the open and close has no relevance to volume analysis (since the norm is high volume), so does volume analysis around holidays, IMO, unless it's out of the norm.
Thanks Josh Dance, makes a lot of sense and will keep this in mind in future trades.