المدربTransaction reporting sends a regulator, for every transaction in reportable instruments, a report in a fixed field format — in the European Union the fields of RTS 22 — identifying the firm, the buyer and seller (by legal entity identifier, Book 2, chapter 28), the instrument (by ISIN), the time, quantity, price and venue; a correction is a cancellation of the report and a new one. Unlike the post-trade publication of Book 2’s trade reporting, it is not public: it feeds the regulator’s own surveillance.
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