After a nice trading day basking in the green, following President Trump’s assertion that peace talks are going “very well” with Iran (while lacking particulars, and that’s putting it kindly), pre-market futures are down a quarter of a percent at this hour. The Dow is giving back -130 points from the +631 it made yesterday, the S&P 500 is -17 from Monday’s +74, and the Nasdaq is stripping back -66 points from +299 the previous session.Close the Book on Q4 Productivity: +1.8%Nonfarm U.S. Productivity for Q4 ...