BBO feed is a real-time data feed that provides Quotes (best bid/ask quotations) for all traded securities.This is a top of book feed that publishes updates for every event in real time.
The BBO Feed is available for:
Current Production - NYSE, NYSE American, NYSE Chicago and NYSE National
Pillar Publisher Client Spec
XDP BBO Client Spec 2.5a
Pillar Refresh/Retransmission Common Client Spec
XDP Common Client Spec v2.3d
Current Production - NYSE Arca (Legacy Publisher)
Legacy Publisher Client Spec
XDP BBO Client Spec v2.5a
Legacy Refresh/Retransmission Common Client Spec
XDP Common Client Spec v2.2c
Updated Halt Condition Codes - 11/23/2020 - all markets
Pillar Publisher Client Spec
XDP BBO Client Spec v2.5a
XDP Common Client Spec
XDP Common Client Spec v2.4