the numbers don't match on different quote provides what's up with that? NQ should be up 15 points (1399 Fri close) not 10
they must settle the future to the pit traded contract for all intents of accurate p&l for clearing houses
The closing price and the actual settlement price are usually a few points different (by "fair value") because of the end-of-month settlement procedures - see this link for more info: http://www.cme.com/prd/eq/fairvaluefaq2544.html This happens at the end of every month. You've never noticed it before?