Trade Surveillance & Communications Compliance software enables financial services firms to detect market abuse and meet regulatory obligations by monitoring trading activity and electronic communications. The category encompasses two primary functions: trade surveillance systems that analyze transaction patterns to identify manipulation tactics like spoofing, layering, wash trading, and insider trading, and communications compliance platforms that capture, archive, and supervise content across email, chat, voice, SMS, and collaboration tools. Solutions address requirements including SEC 17a-4, FINRA, MiFID II, and MAR. The category has evolved from rule-based detection and keyword filtering toward behavioral analytics, machine learning models that establish trader baselines, and natural language processing that understands context and sentiment in communications. Modern platforms increasingly unify trade and communications surveillance into single workflows with correlation capabilities across both data streams.