[BRIEFING.COM] S&P futures vs fair value: +3.50. Nasdaq futures vs fair value: +3.80.  There hasn't been an awful lot of news flow to guide premarket participants this morning, but stock futures have improved modestly so that they now point to a slightly higher start for the session, rather than a flat beginning. Today's economic calendar is void of any major item, but results from an auction of 5-year TIPS at 1:00 PM ET could act as a catalyst for traders. The results mark the start of a series of auctions that are set to take place this week. Also out later this week is the advance third quarter GDP reading, which is due Thursday morning and will act as a headlining item.