The DTCC subsidiary can now offer overnight trading activity via exchanges and ATS venues.
The National Securities Clearing Corp. (NSCC) is extending its clearing hours to 24×5 availability, according to officials at the Depository Trust & Clearing Corp. (DTCC), the post-trade market infrastructure provider for the financial services industry.
The new hours via the NSCC, which is a DTCC subsidiary, will be from Sundays at 8:00 PM ET to Fridays at 8:00 PM ET, to provide overnight trading activity from Alternative Trading Systems (ATS) and exchanges, officials say.
“ATSs have already been leveraging NSCC’s previously extended operating window, introduced in September 2024 with clearing beginning approximately 2.5 hours earlier than before, while exchanges are expected to follow with longer trading hours in late 2026, alongside planned extensions from Securities Information Processors (SIPs),” according to DTCC officials.
“The move to 24×5 trading reflects growing global demand for increased access to U.S. markets as investors seek greater flexibility to trade outside traditional hours. By supporting 24×5 trading activity, NSCC is helping to strengthen the safety, soundness, and efficiency of the U.S. equities marketplace while supporting greater global participation,” according to the announcement.
The milestone will enable “NSCC to apply its central counterparty guarantee immediately to transactions executed across extended trading hours and multiple time zones,” officials say.
“By increasing clearing hours to operate on a near-continuous basis, we are enhancing access to U.S. markets for investors around the world, while maintaining the robust risk management and resiliency capabilities that are critical to market stability,” says Brian Steele, managing director and president of Clearing & Securities Services at DTCC, in a prepared statement.
Officials at the DTCC report that they have been working closely with “clients, exchanges, alternative trading system providers and other industry partners to support readiness for this transition, including extensive testing, operational planning and client engagement to ensure a smooth and seamless implementation.”
DTCC officials add that they opened a testing environment in January 2026, “requiring all consumers of the UTC real-time messages to test the required changes. All firms completed testing successfully prior to the recent go-live.”
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