The gating factor for extended-hours equity trading is the consolidated tape's own operating window. The SEC has approved amendments to both the CTA Plan and the UTP Plan, clearing Securities Information Processors to extend their operating hours beginning in December. A December 6 production launch is on the calendar, with six industry testing rounds scheduled ahead of it.
Where SIPs sit in the data stack
Securities Information Processors handle the aggregation and distribution of trade and quote data across U.S. equity markets. The CTA Plan covers collection and redistribution of that data for exchange-listed securities. The UTP Plan covers Nasdaq-listed securities under a parallel framework. Together they define the operating rules for the consolidated tape.
When the SIPs operate, the tape is live. When they do not, the standardized, regulator-endorsed feed goes dark with them. That window has historically set the ceiling on when extended-hours trading can carry consolidated data. The SEC approval of the CTA and UTP Plan amendments directly extends that ceiling.
Six tests before the feed goes live
Six industry testing opportunities are planned before the December 6 production launch. The sequencing is deliberate: market participants need to validate connectivity and update internal systems before live markets depend on the extended feed. The July 7 announcement from New York identified six testing opportunities but did not specify their individual dates.
The December 6 marker
December 6 is the point at which the approved amendments move from regulatory text into live market infrastructure. Six testing rounds separate the July 7 announcement from that production date.