Analyst upgrades: NOC, GDNNY and MELI

MOST NOTEWORTHY: Northrop Grumman, Groupe Danone and MercadoLibre were today's noteworthy upgrades:

Oppenheimer upgraded shares of Northrop Grumman (NYSE: NOC) to Outperform from Perform after the Pentagon selected the company over Boeing (NYSE: BA) for the newly designated KC-45A Aerial Refueling Tanker with a potential value of $35B.
Citigroup upgraded shares of Groupe Danone (OTC: GDNNY) to Buy from Hold on valuation, as they believe the sell-off on commodity cost concerns is overdone.
MercadoLibre (NASDAQ: MELI) was raised to Outperform from Sector Perform at RBC Capital, as they believe MELI's long-term thesis is more compelling now vs. six months ago and notes favorable reaction to Mercado Pago v2.0.

OTHER UPGRADES:

Goldman upgraded Societe Generale (OTC: SCGLY) to Neutral from Sell.
Jefferies upgraded Exelon (NYSE: EXC) to Buy from Hold.
Deutsche Telekom (NYSE: DT) was raised to Neutral from Underweight at JP Morgan.

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