Analysts' Upgrades, Downgrades: Sirius

Change in Ratings

Altera(ALTR Quote) downgraded at Jefferies to underperform from hold. Price target lowered to $17 from $19. Maintains 2008 EPS estimates of $1.07.

Ansys(ANSS Quote) downgraded at Jefferies from hold to buy. 2008 EPS estimates raised to $1.60 from $1.57. Maintains $48 price target.

Comerica(CMA Quote) upgraded at Keefe, Bruyette and Woods to outperform with a $32 price target. NPL's and NCO's are expected to continue to rise and the conservative credit culture and strong capital will sustain the company's dividend.

Cintas(CTAS Quote) upgraded at Citigroup to hold from sell with a $27.50 price target. After a 20% decline in share value this year the stock is now approaching its fair value. Fourth quarter 2008 EPS lowered to 55 cents from 57 cents and fiscal year 2009-2010 estimates reduced by 5 cents each to reflect the impact of high energy costs, costs of international expansion and a recent faculty fire.

Community Health Systems(CYH Quote) upgraded at Citigroup to hold from sell with a $33 price target. The stock is trading just below its $33 price target and the risk/reward is now viewed as more limited. It is also believed that CYH will meet second-quarter 2008 estimates.

Fortune Brands(FO Quote) downgraded at Wachovia to market perform. Cost pressures from steel and particle board look to have offset cost saving initiatives deferring these potential benefits

Genzyme(GENZ Quote) initiated at UBS with a buy rating and $86 price target. Introduces 2008 EPS estimates of $3.48.

Interpublic Group(IPG Quote) downgraded at Deutsche to hold with a $10 price target. A slowing ad market could possibly delay the company's ability to get peer-level margins.

Cramer: What Merrill Upgrade Means for XM-SIRI