CME and JRCC

I bought both these stocks a week ago in the sim acct.,
I bought CME around $388 and sold at $416,, its up another $30 today.




I bought JRCC around $40 and sold at $43. Its up another $10 today. (You'll notice I went short on it yesterday, and now I'm down $3 on it).




Can the pop in these stocks be attributed to OPEX this Friday? Fates Pilot found an interesting case.
"Consequently, we estimate that on the order of 12% (=37/310) of the daily absolute return of optioned stocks can be accounted for by option market participants re-balancing the hedges of their option positions."