OpenBook Aggregated is a frequency based depth of book feed that contains aggregate limit-order volume at every bid and offer price. It is a snapshot feed with update frequency per symbol of one second. NYSE OpenBook Aggregated provides a more convenient option for display applications.
The Openbook Aggregated Feed is available for:
Current Production
OpenBook Aggregated Client Specification
Upcoming Q1-Q2
OpenBook Aggregated Client Specification [new]