Expand All 4551. Requirements for Alternative Trading Systems to Record and Transmit Order and Execution Information for Security Futures 4554. Alternative Trading Systems — Recording and Reporting Requirements of Order and Execution Information for NMS Stocks Book traversal links for 4550. ATS Reporting ‹ 4540. Reporting Requirements for Clearing Firms Up 4551. Requirements for Alternative Trading Systems to Record and Transmit Order and Execution Information for Security Futures ›