class action        
[die] 起：告利益其而讼
class action, Class Action Suit
Litigation undertaken on behalf of shareholders against companies whose shares have declined in price, alleging misstatements or omissions in the prospectus or other material communicated to the public is called a class action. These lawsuits, now harder to mount due to Federal legislation, are spearheaded by a handful of law firms specializing in this area and are focused on recent IPOs and technology companies.