Top Analyst Upgrades & Downgrades (ADTN, AAPL, ARNA, T, BEAM, BBBY, BBY, BWLD, CVX, HEK, JPM, MYGN, PRA, RSH, RXN, RIMM, SLF, TXRH, VZ)

These are some of the top analyst upgrades, downgrades and initiations seen in Wall Street research calls this Friday.

Adtran Inc. (NASDAQ: ADTN) Reiterated Buy and $39 target at Argus.

Apple Inc. (NASDAQ: AAPL) Maintained Outperform but cut estimates at Credit Suisse (full details).

Arena Pharmaceuticals (NASDAQ: ARNA) Raised to Buy at Jefferies; Raised to Outperform at Leerink Swann.

AT&T, Inc. (NYSE: T) Raised to Outperform at Credit Suisse.

Beam Spirits Inc. (NYSE: BEAM) Maintained Hold at Argus.

Bed Bath & Beyond (NASDAQ: BBBY) Raised to Outperform at Credit Suisse.

Best Buy (NYSE: BBY) Cut to Neutral with $20 target at Credit Suisse.

Buffalo Wild Wings (NASDAQ: BWLD) Started as Outperform at Wells Fargo.

Chevron Corp. (NYSE: CVX) Reiterated Buy with $130 target at Argus.

Heckmann Corporation (NYSE: HEK) Started as Outperform with $5 target at Credit Suisse.

J.P. Morgan Chase & Co. (NYSE: JPM) Maintained Outperform but cut estimates at Credit Suisse; Cut to Hold at Stifel Nicolaus; Cut to Market Perform at FBR.

Myriad Genetics Inc. (NASDAQ: MYGN) Started as Neutral at BofA/ML.

ProAssurance Corp. (NYSE: PRA) named Bull of the Day at Zacks.

RadioShack Corp. (NYSE: RSH) named Bear of the Day at Zacks.

Rexnord Corporation (NYSE: RXN) Started as Neutral at Credit Suisse.

Research In Motion Limited (NASDAQ: RIMM) Maintained Neutral and cut estimates at Credit Suisse.

Sun Life Financial Inc. (NYSE: SLF) Raised to Outperform at Credit Suisse.

Texas Roadhouse (NASDAQ: TXRH) Started as Market Perform at Wells Fargo.

Verizon Communications, Inc. (NYSE: VZ) Raised to Outperform at Credit Suisse.

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JON C. OGG