Thursday's Analysts' Upgrades and Downgrades

Transocean (RIG Quote) downgraded at Jefferies: RIG downgraded to Hold rating from Buy at Jefferies. Price target lowered to $87 from $96. 2007 EPS estimates bumps down to $6.97 from $7.39.

Real Networks (RNWK Quote) downgraded at Oppenheimer: RNWK was downgraded from Neutral to Sell at Oppenheimer. Company is seeing sluggish music subscriber growth, and though games revenue continues to expand through acquisitions.

Schering-Plough (SGP Quote) downgraded at Prudential: SGP was downgraded from Overweight to Neutral at Prudential. $27 price target. Stock lacks significant near-term catalysts to drive the price higher over the next several quarters.

Wellcare Health (WCG Quote) downgraded at Wachovia: WCG was downgraded to Market Perform at Wachovia. Stock appears fully valued, trading at a premium to its historical average valuation. Company also faces potential political headwinds.

Zions Banc (ZION Quote) upgraded at Piper: ZION was upgraded from Market Perform to Outperform at Piper Jaffray. $95 price target. Credit quality is stable and the company trades at a discount to its peers. Also do not expect management to attempt any major acquisitions.

STOCK COMMENTS / EPS CHANGES

American Capital Strategies (ACAS Quote)target upped at Jefferies ACAS price target upped at Jefferies. New price target set at $55 from $46. Reiterates Buy rating.

Deere (DE Quote)numbers raised at UBS: DE numbers raised at UBS. Price target jumps to $127 from $119. 2007 EPS estimates lift to $6.60 from $6.30. Reiterates Buy rating.

Deere estimates raised at Goldman: 2007 estimates on DE increased to $6.65 from $6.35 at Goldman. Q1 results came in stronger than expected. See increased confidence that ag equipment operating leverage will be stronger the cycle and that weakness in construction equipment will be contained to 2007. Target price raised to $137 from $133 and reiterated Buy rating.