Analyst upgrades, downgrades and initiations: ARUN, MOS, POT, AGU, EGLE, DO, MON, SWCEY, TDC and ABC

Analyst upgrades:

Jefferies upgraded Aruba Networks (NASDAQ: ARUN) to Buy from Hold following the company's Q3 results to reflect improved visibility. The firm raised its target price to $6.50 from $3.
Citigroup upgraded Mosaic (NYSE: MOS) and Potash (NYSE: POT) to Buy from Hold and Agrium (NYSE: AGU) to Hold from Sell as it believes stronger grain fundamentals more than offset China contract risk. The firm raised its target on Mosaic to $72 from $48, on Potash to $145 from $83 and on Agrium to $55 from $36.
Fulton Financial (NASDAQ: FULT) Was upgraded to Market Perform from Underperform at Keefe Bruyette.
Rio Tinto (NYSE: RTP) was raised to Neutral from Sell at Goldman.
Noble Corp. (NYSE: NE) was upgraded at Deutsche Bank to Buy from Hold.

Analyst downgrades:

UBS downgraded Eagle Bulk Shipping (NASDAQ: EGLE) to Neutral from Buy based on valuation and the belief the dry bulk shipping market is in a protracted downcycle. The firm lowered its target to $7 from $5.
Deutsche Bank downgraded Diamond Offshore (NYSE: DO) to Hold from Buy as it prefers more oil levered names. The firm raised its target price to $101 from $81.
Citigroup downgraded Monsanto (NYSE: MON) to Hold from Buy to reflect glyphosate supply concerns and valuation.
JP Morgan downgraded Red Robin Gourmet (NASDAQ: RRGB) to Neutral from Overweight.
SunTrust (NYSE: STI) was downgraded to Underweight from Equal Weight at Morgan Stanley.
CommVault (NASDAQ: CVLT) was cut to Hold from Buy at KeyBanc.

Analyst initiations:

Jefferies believes Swiss Re's (OTC: SWCEY) high capital leverage to credit markets makes it a good stock for exposure to narrowing spreads via the equity space. The firm started shares with a Buy rating and $43 target.
Merriman initiated Teradata (NYSE: TDC) with a Neutral rating. The firm prefers waiting for a better entry point into Teradata shares due to valuation, increasing competition, and a lack of visibility.
Soleil views AmerisourceBergen (NYSE: ABC) as a "low risk way to play the rise of generic drugs. Shares were assumed with a Buy rating and $51 target.
Boston Scientific (NYSE: BSX) was initiated at Bernstein with an Outperform rating and $11 target.