Pump-and-Dump Worries Prompt Nasdaq to Tighten China Listing Rules

1. Nasdaq proposes stricter rules for small Chinese IPOs amid fraud concerns. 2. New rule mandates $25 million minimum IPO raise for China-based companies. 3. Many recent Chinese IPOs have surged and then collapsed. 4. Pressure on Nasdaq increases due to fraud patterns linked to these stocks. 5. SEC approval needed for proposed changes to listing standards.