Tuesday's Upgrades and Downgrades

UPGRADES

Jo-Ann Stores JAS KeyBanc Capital Mkts Hold » Buy
Ventana Medical VMSI Caris & Company Average » Above Average
Cousins Prop CUZ Wachovia Mkt Perform » Outperform
Maxygen MAXY Stanford Research Hold » Buy
SL Green Rlty SLG KeyBanc Capital Mkts Hold » Buy
Ariba ARBA Cowen & Co Underperform » Outperform
Motorola MOT RBC Capital Mkts Sector Perform » Outperform
Susser SUSS JP Morgan Neutral » Overweight
EMC Corp EMC Citigroup Hold » Buy
Optium OPTM Jefferies & Co Hold » Buy


DOWNGRADES

Mattson MTSN CIBC Wrld Mkts Sector Perform » Sector Underperform
Cubic CUB BB&T Capital Mkts Hold » Underweight
Dime Community DCOM Stifel Nicolaus Hold » Sell
F5 Networks FFIV Nollenberger Capital Buy » Neutral
Foundry Ntwks FDRY Nollenberger Capital Buy » Neutral
Kyphon KYPH Piper Jaffray Outperform » Market Perform
LDK Solar LDK CIBC Wrld Mkts Sector Outperform » Sector Perform
Sirtris Pharma SIRT JP Morgan Overweight » Neutral
Rockwell Automation ROK JP Morgan Overweight » Neutral
Red Hat RHT Credit Suisse Outperform » Neutral
Reliance Steel RS UBS Buy » Neutral