NFV 1073.84. SPX 1058.89. Edge still > 7 , so we are still holding the first unit. We only take profit (or exit with a loss) on the first unit (when long) when the spread is < 7. And it is less than 24, so we cannot add a second unit. If you have no long units though, edge is > 14 so you can get in long. This week could be tough, as this is the traditionally the lowest volume week of the year. On the other hand, as long as NFV does not collapse, the market may just be that much less efficient and give us opportunities to add a second or even a third unit.
NFV went out at 1071.38. SPX at 1048.92. That is just a hair less than 24, but imo close enough. Be aware that 1042 will probably be tested again, but if you have the discipline of a marine, just enter at your first opportunity on your second unit. I see at http://www.cmegroup.com/ that ESU0 is at 1046.25, + 1.25 as one would expect with this much edge, so you may have missed the best entry, but not necessarily a bad entry either.
NFV 1070.32. SPX 1052.75. NFV has been oscillating between 1075 and 1070, and the "weakness" worries me a little bit. I don't remember ever seeing have it's own "volatility" like this within a single day, except for the flash crash day of course, where the oscillations where galactic.
NFV 1078.45. SPX 1064.61. If you have any "24" unit(s), this is close enough to < 14 take profits on those, imo. So we are left trying to take profits on the "14" unit(s), which we do if we get further convergence between NFV and SPX to < 7.