Fractional End of Day Summary Message Fields

The Fractional End of Day Summary message is used to give a consolidated, high-level overview of a security for the day, based on an end of day summary message received from either the US CTA or UTP Securities Information Processor (SIP) feeds. The message will be sent after it is received from the source and the delay period has expired, currently 15 minutes. The system may send more than one Fractional End of Day Summary message after the end of a trading session due to multiple CTA/UTP end of day summary spins.

Table 1. Fractional End of Day Summary
FieldOffsetLengthValue/TypeDescription
Length01BinaryLength of this message including this field.
Message Type110xEA Fractional End of Day Summary message
Timestamp28Binary
  • The timestamp of the originating SIP summary message.
  • Encoded as the number of nanoseconds since midnight (effective 11/02/26, since epoch).
Symbol108AlphanumericSymbol right padded with spaces.
Data Source181Alphanumeric
  • C=CTA
  • U=UTP
Opening Price198Binary 8.4 PriceOpening Price. 0 if the system has not received an opening price for the security.
Closing Price278Binary 8.4 PriceClosing Price.
High Price358Binary 8.4 PriceHighest trade price of the day.
Low Price438Binary 8.4 PriceLowest trade price of the day.
National Cumulative Volume518Binary 12.6 Cumulative volume of shares traded as reported to the national consolidators (SIPs).
First Regular Hours Trade Price (effective 11/30/26) 598Binary 12.6 Represents the first eligible regular-hours SIP trade. Uses the applicable CTA or UTP market-center designation. Coexists with all existing Opening Price messages. Excludes trades with SIP sale condition C, B, H, I, M, N, Q, R, T, U, V, 7, or 8.
Total Length = 67 bytes
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