Rocket Lab USA is trading 4.46% down at $64.52 after extending its recent retreat, as investors remain concerned about the approximately $8 billion Iridium acquisition, potential dilution, and refinancing complexity. - August 24 insider sell-to-cover transactions totaling approximately $5.49 million added negative sentiment. - Lingering Q2 earnings disappointment and Neutron development risks continued weighing on shares. - The stock is significantly underperforming a broadly flat market, indicating company-specific pressure.