I took a look at the levels here, this -2% move after the split IMO is typical after a reverse split, but all you will hear in the media is about how great the RS is because now large firms that could not buy a stock below $5 will be piling in. Well, piling they are, but piling out more like it.
The $44 has been support over the past 6 weeks, you can see there have been trades below $44, but that area has held.
There is a clear downtrending resistance level from Jan peak, it is safe to say that C has been in a downtrend since hitting that $51.50 high. That downtrend has yet to be challenged successfully.
There is long term support level in the $42 range.
So what does this all mean?
Longs will be watching $44, if they see continued weakness through this level, $42 is the target. If that $42 fails, then run for the hills because a major support level got taken out.