Analyst Upgrades

• Piper Jaffray upgraded UPS (UPS) to overweight from neutral with a $79 price target following the company's better-than-expected Q1 results.
• SunTrust believs Zions Bancorp's (ZION) tangible book value is around $20/share, making any future capital raise not as dilutive as the firm previously expected. The firm upgraded shares to buy from neutral and has a $26 target on the stock.
• FBR Capital upgraded J.B. Hunt (JBHT) to outperform from market perform following the company's better-than-expected Q1 results. The firm raised its target price for shares to $43 from $40.
• American Superconductor (AMSC) was upgraded to buy from hold at Deutsche Bank.
• BP (BP) was upgraded to outperform from neutral at Credit Suisse.
• Global Payments (GPN) was upgraded to outperform from market perform at Wells Fargo.

Analyst upgrades:

• Morgan Keegan upgraded Motorola (NYSE: MOT) to Outperform from Market Perform due to the increased visibility of Android-based launches, as well as the stock's valuation.
• OfficeMax (NYSE: OMX) was upgraded to Buy from Hold by Citigroup, which cited the company's stabilizing sales trend, accelerating share gains, and valuation.
• Kaufman Bros. upgraded iRobot (NASDAQ: IRBT) to Buy from Hold on valuation.
• Cancaccord upgraded Rio Tinto (NYSE: RTP) to Buy from Hold citing the turnaround in the aluminum business and its exposure to copper.
• Wells Fargo upgraded Smith & Nephew (NYSE: SNN) to Market Perform from Underperform.
• BT Group (NYSE: BT) was upgraded to Neutral from Reduce by Nomura.
• Societe Generale raised L'Oreal (OTC: LRLCY) to Buy from Sell.
• Franklin Resources (NYSE: BEN) was upgraded to Buy from Hold by Sandler O'Neill.