These are some of today’s top analyst upgrades, downgrades and initiations seen in Wall Street research calls this Tuesday.

Achillion Pharmaceuticals Inc. (NASDAQ: ACHN) Started as Outperform with $11 target at Credit Suisse.

Apple  Inc. (NASDAQ: AAPL) Started as Strong Buy with $800 target at Raymond James (late Monday call).

Boston Scientific Corp. (NYSE: BSX) Reiterated Outperform with $7 target at Credit Suisse.

Celestica Inc. (NYSE: CLS) Cut to Hold at Deutsche Bank.

Citigroup Inc. (NYSE: C) Reiterated Outperform with $48 target at Credit Suisse.

Citi Trends, Inc. (NASDAQ: CTRN) named Bear of the Day at Zacks.

First Solar, Inc. (NASDAQ: FSLR) Cut to Hold at Goldman Sachs.

Hain Celestial Group (NASDAQ: HAIN) named Bull of the Day at Zacks.

Idenix Pharmaceuticals Inc. (NASDAQ: IDIX) Started as Neutral at Credit Suisse.

Infosys Ltd. (NASDAQ: INFY) Cut to Neutral at Goldman Sachs.

Newcastle Investment Corporation (NYSE: NCT) Started as Outperform at Keefe Bruyette & Woods.

SAP AG (NYSE: SAP) Raised to Buy at SocGen; Cut to Neutral at HSBC.

Teekay Tankers Ltd. (NYSE: TNK) Raised to Neutral with new $5.20 target at BofA/ML.

Tiffany & Co. (NYSE: TIF) Started as Neutral at Macquarie.

Valero Energy Corporation (NYSE: VLO) Reiterated Outperform with $37 target at Credit Suisse.

Vertex Pharmaceuticals Inc. (NASDAQ: VRTX) Started as Outperform with $43 target at Credit Suisse.

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