PostTradeRx is a powerful market data replay and analysis tool, allowing users to view the market and trade data for any exchange listed security for a given time span. This tool will help validate best execution for compliance. Brokers and traders can use the tool to reconstruct the events around their trade to determine whether there was a missed opportunity or an unforeseen event. Brokers can send clients a screen shot of the moment their particular trade occurred, confirming the quality of the execution and reducing the number of customer inquiries.