Investment

I bought some citi stock at around $2.7.  Now it's all the way up to $4 in around a week.  Woot!  Now the question is whether Fannie Mae and Freddie Mac would also be good investments.  They were both valued at $60 at one time.  Now they're both down to dollar values.  Yet their functionality/monopoly remains.  Just because people overinvested in the housing market, does that mean in a cooler market, fannie/freddie are only worth 1/60th of their older value?  Anyway, this is certainly not my forte, but intuition tells me they might be good picks.  Let's see what happens a year or two down the line.