While Fools should generally take the opinion of Wall Street with a grain of salt, it's not a bad idea to take a look at particularly stock-shaking analyst upgrades and downgrades -- just in case their reasoning behind the call makes sense.

What: Shares of Rite Aid Corporation (NYSE:RAD) popped about 3% this morning after Goldman Sachs upgraded the drugstore operator from neutral to buy.

So what: Along with the upgrade, analyst Robert Jones boosted his price target to $8 (from $5), representing about 24% worth of upside to yesterday's close. So while contrarians might be turned off by the stock's strength during the past year, Jones' call suggests that the positive sentiment surrounding Rite Aid's turnaround story isn't fading anytime soon. 

Now what: According to Goldman, Rite Aid's risk-reward trade-off remains rather attractive. "Two key elements to the story are store remodels and balance sheet deleveraging, and the expanded agreement with [McKesson] should allow for the acceleration of one or both," said Jones. "Importantly, on its core outlook, we see stronger comp growth ahead, which should only be compounded by RAD's higher exposure to states that expanded Medicaid (65% of stores vs. 47% for [CVS Caremark] and 54% for [Walgreen]...)." When you couple Rite Aid's red-hot stock price with its still-hefty debt load and fragile competitive position, however, I'd wait for a much wider margin of safety before jumping in.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.