JD, thanks for the advice. I know oil and gas stocks are volatile.
I just found this older back in Dec 2010 article and it also makes me feel like YPF is a good long term hold.
The hedge fund, Eton Park, has an option to buy more shares at $43 until 2012, so maybe the $43 level is the bottom? I did not check further to see if Eton Park has increased their ownership since the article was published. The article also likes the fact that Spain is selling off their stake.