The investment bank, Credit Suisse First Boston (CSFB), has upgraded the Belgian-based brewing combine, Interbrew, from "underperform" to "neutral" and said the valuation was set to improve. News of the upgrade followed a fall in Interbrew's shares on Monday after it issued a lower profit forecast to certain analysts. CSFB said that most of the impact of that bad news was now already discounted in the share price and it was now targeting €24 for the shares.