I'm not sure I see the artificial selling pressure. Given the indexed nature of QQQ, the entire amount of CIEN that needs to be sold for their recalibration is less than a single day's average volume.
(I don't have the # offhand, but it's comparable to the amount of LVLT that must be bought, and it was figured at somewhere between 4-5M shares.)
I just don't see where the selling pressure is -- I think CIEN's really not going anywhere until mgmt can point to a much larger increase in revenue than a couple of million a quarter, given the current valuation. All imho, of course.