Notable Analyst Rating Changes 5/13: SIRI, BOOM, MEDX Upgraded; NXTM, MNT, BE Downgraded May 13, 2008 09:39AM

StreetInsider.com Notable Analyst Rating Changes:

UPGRADES:
Merrill Lynch upgrades Sirius Satellite (Nasdaq: SIRI) from Sell to Neutral.

KeyBanc upgrades Dynamic Materials (NASDAQ: BOOM) from Hold to Buy with a $50 price target ...


Jefferies & Co Upgrades Medarex (MEDX) to Buy Jan 28, 2008 08:44AM

Jefferies & Co upgrades Medarex (Nasdaq: MEDX) from Hold to Buy ...