What does code "C" refer to in the TWS Time and Sales?

A trade reported in TWS Time and Sales with code “C” has a same day settlement for cash ("Cash Sale"). Orders resting in an exchange's order book that have regular settlement (trade date plus 1 business day or T+1) are not entitled to trade with a price reported as code "C" to comply with reporting requirements.

For additional information, please visit the TWS Users' Guide.

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