As previously reported, the Consolidated Trade System (CT) experienced problems this morning between the opening and approximately 9:38am. The system did not publish sales in Tape A securities (NYSE-listed) from any exchange in the security symbol range 'A' through 'L'. The New York Stock Exchange has provided to the Consolidated Tape System all of its opening prints in the affected symbols, and the Consolidated Tape System has added these prints to the tape with an 'N' exchange modifier, and an 'OPD' trade modifier (indicating an out-of-sequence, opening trade).
Please note that different vendors will process trades marked with 'OPD' differently for VWAP calculations. For example, Bloomberg may include these trades in its VWAP calculation while Thomson Reuters will not. If you have any questions regarding various VWAP calculations or other treatment of 'OPD' trades, please contact your market data vendor.
Category: Operations
