Hi Hal, Wayne,
Thanks to both.
Wayne, you have the "magic number on your chart" 74.295 which is the "last trade/close" of Globex Thursday.
The 74.18 has to be the close of "day session" whatever time that was ...
Digging further, on a daily or weekly chart I get the 74.18 which is quoting the day session closes. If I go lower to hourly, 15min, ... 1min I get the 74.295 for the close (Globex).
I always get different numbers for Dx, one for data stream another on charts, so guess this is the answer and is only really apparent on weekends.
Since I rarely trade Dx, I never noticed this before !!!