Is It Too Late to Buy Pfizer Stock?

It's no secret that the last year has been punishing.Are Pfizer's (PFE -0.04%) best days behind it? If the stock's critics are to be believed, the answer is an emphatic "yes, obviously," with issues like its recent stint of unprofitability and a beaten-down top line being the primary pieces of supporting evidence.But even the best companies can sometimes have a few quarters of difficulty, and investors should hesitate before counting this stock out. Let's analyze the arguments on each side and reach an acti ...