Marvel Entertainment ( MVL) downgraded at JP Morgan from Overweight to Neutral. See few catalysts until the company's own movies come out in mid-2008. Macrovision ( MVSN) upgraded to Buy rating from Hold at Jefferies. Price target jumps to $31 from $26 and 2007 EPS estimates rise to $1.33 from $1.28. Sappi Limited ( SPP) downgraded at Credit Suisse to Neutral from Outperform based on valuation. Believes stock is now fairly valued. Maintained $19 target price.