This is what I was referring to. Its been a while so my apologies if its aged out:
The Private Securities Litigation Reform Act of 1995, Pub. L. 104-67, 109 Stat. 737 (codified as amended in scattered sections of 15 U.S.C.) ("PSLRA") implemented several substantive changes in the United States, affecting certain cases brought under the federal securities laws, including changes related to pleading, discovery, liability, class representation, and awards fees and expenses.
The PSLRA was designed to limit frivolous securities lawsuits. Prior to the PSLRA, plaintiffs could proceed with minimal evidence of fraud and then use pretrial discovery to seek further proof. This set a very low barrier to initiate litigation, which encouraged the filing of weak or entirely frivolous suits. Defending against these suits could prove extremely costly, even when the charges were unfounded, so defendants often found it cheaper to settle than fight and win. Under the PSLRA, however, plaintiffs need more proof of fraud before they can initiate a suit. This makes it very difficult to file a frivolous suit, but it also makes it much harder to file legitimate ones, as plaintiffs are forced to present evidence of fraud before any pretrial discovery has taken place.[1]
The PSLRA imposes new rules on securities class action lawsuits. It allows judges to decide the most adequate plaintiff in class actions. It mandates full disclosure to investors of proposed settlements, including the amount of attorneys' fees. It bars bonus payments to favored plaintiffs and permits judges to scrutinize lawyer conflicts of interest.