Well we spiked up nicely upon addition to the index if my memory serves me correctly, so it is very likely we will fall as we are culled out.
Falling oil prices, world wide economic slowdown and Zion exploration shut down for 1+ years it seems on the rig merger news. Dead money so people are running into something else.
I don't need any more tax loss selling right now but if you do have gains to offset, seems prudent to sell Zion and buy back in 31 days if you still want to own this company.