Trade reporting is about providing a post-trade record to the regulator so the market has a complete and transparent picture of activity. Because regulators need to monitor for fairness and market integrity, every trade should be captured regardless of how or where it was executed. This means trades that occur on an exchange are reported through the exchange systems, trades negotiated off exchange (OTC or bilateral) are still reported to ensure visibility, and trades that happen off the visible order book (off-order-book) are recorded too so they don’t create hidden liquidity. The goal is to have a full set of data for price formation and surveillance, which is why all these categories must be reported.

Opening orders are used to participate in the price discovery at the market’s opening. They must be entered in the pre-opening phase and stay valid through the opening auction. If any part of such an order isn’t filled during the opening, that non-executed portion is removed after the opening. This setup ensures the opening price is determined by orders active specifically for the opening, and prevents unfilled opening-only orders from lingering into the regular trading session.

The key idea here is matching the state of every order across systems to ensure nothing is out of sync. An Order Reconciliation Report is specifically designed to capture the lifecycle details of each order—when it was entered, any changes, cancellations, partial or full fills—and to compare those details against the venue or counterparty confirmations. This makes it possible to spot discrepancies like an order showing as filled in one system but still active in another, or a cancellation that didn’t propagate everywhere. By providing a single view of order events, the ORR supports accuracy, auditability, and control over the order flow. Other options don’t fit as well because one refers to information available before trading (pre-trade transparency), another to the actual venue where orders are executed (Central Limit Order Book), and the remaining one would deal with reconciling trades rather than orders (trade reconciliation).

In trade reporting, you need to know which broker-dealer is responsible for the trade. The field that does this is the identifier of the member firm—the Member ID. It uniquely identifies the securities dealer in the system, so regulators know who must report the trade and who is responsible for the record. The other fields serve different purposes: the Trader ID points to the individual trader within a firm, not the firm itself; the Execution time records when the trade occurred; and the Trade type describes what kind of trade it was (buy, sell, etc.), not who the dealer is.