NSCC

CNS® Modernization: Extension of CNS Print Image Output
Availability and Adjustment to Member Testing Timeline

Wed, 15 Jul 2026 00:00:00 -0500

CNS® Modernization: Extension of CNS Print Image Output
Availability and Adjustment to Member Testing Timeline

Notice: a9795

Summary:

CNS® Modernization: Extension of CNS Print Image Output
Availability and Adjustment to Member Testing Timeline

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 10 Jul 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9793

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Cross-endorsed Net Credit and Net Debit Balances from Settlement Rollover

Thu, 09 Jul 2026 00:00:00 -0500

Cross-endorsed Net Credit and Net Debit Balances from Settlement Rollover

Notice: A9794

Summary:

DTCC wanted to share its approach for addressing cross-endorsed net credit and net debit balances that would have settled on June 29, 2026, had there not been a settlement rollover.

X9 Financial Public Key Infrastructure (PKI) Certificates

Wed, 08 Jul 2026 00:00:00 -0500

X9 Financial Public Key Infrastructure (PKI) Certificates

Notice: A9791

Summary:

X9 Financial Public Key Infrastructure (PKI) Certificates

ETF Modernization Changes and Timeline Update

Tue, 07 Jul 2026 00:00:00 -0500

ETF Modernization Changes and Timeline Update

Notice: a9792

Summary:

DTCC is leading a multi-year transformation to deliver innovative, modular systems that meet the evolving needs of today’s financial markets. This initiative enhances core capabilities, simplifies workflows, and supports seamless straight-through processing.

UNIVERSAL TRADE CAPTURE EXCHANGE LAUNCH FOR TEXAS STOCK EXCHANGE (TXSE)

Thu, 02 Jul 2026 00:00:00 -0500

UNIVERSAL TRADE CAPTURE EXCHANGE LAUNCH FOR TEXAS STOCK EXCHANGE (TXSE)

Notice: A9790

Summary:

The Texas Stock Exchange (TXSE) will launch on July 10, 2026, with NSCC providing clearing services for TXSE-executed trades.

CHANGES IN THE LIST OF PARTICIPANTS

Thu, 02 Jul 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9789

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Notice of Actions Taken Under NSCC Rule 60 – Market Disruption and Force Majeure and DTC Rule 38 - Market Disruption and Force Majeure

Tue, 30 Jun 2026 00:00:00 -0500

Notice of Actions Taken Under NSCC Rule 60 – Market Disruption and Force Majeure and DTC Rule 38 - Market Disruption and Force Majeure

Notice: a9788

Summary:

Notice of Actions Taken Under NSCC Rule 60 – Market Disruption and Force Majeure and DTC Rule 38 - Market Disruption and Force Majeure

Obligation Warehouse Updated Prod release

Fri, 26 Jun 2026 00:00:00 -0500

Obligation Warehouse Updated Prod release

Notice: A9786

Summary:

The new OBW Prod release will be July 1st

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 26 Jun 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9785

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Effective Date of Additional Risk Slices to Support 24x5 Trading

Mon, 22 Jun 2026 00:00:00 -0500

Effective Date of Additional Risk Slices to Support 24x5 Trading

Notice: a9784

Summary:

Effective Date of Additional Risk Slices to Support 24x5 Trading

CHANGES IN THE LIST OF PARTICIPANTS

Thu, 18 Jun 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9782

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Submission of Rule Filing SR-NSCC-2026-009 – Proposed Enhancements to NSCC’s Supplemental Liquidity Deposit Rules

Thu, 18 Jun 2026 00:00:00 -0500

Submission of Rule Filing SR-NSCC-2026-009 – Proposed Enhancements to NSCC’s Supplemental Liquidity Deposit Rules

Notice: a9783

Summary:

Submission of Rule Filing SR-NSCC-2026-009 – Proposed Enhancements to NSCC’s Supplemental Liquidity Deposit Rules

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 12 Jun 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9780

Summary:

OPERATIONS PARTNER/OFFICER; MANAGER P&S DEPARTMENT; CASHIER; ACATS PARTICIPANTS; FUND/SERV PARTICIPANTS; MUNICIPAL BOND COMPARISON PARTICIPANTS

NSCC CNS Transformation Impact on NSCC SFT Clearing Miscellaneous Activity Client Information

Thu, 11 Jun 2026 00:00:00 -0500

NSCC CNS Transformation Impact on NSCC SFT Clearing Miscellaneous Activity Client Information

Notice: A9779

Summary:

NSCC CNS Transformation Impact on NSCC SFT Clearing Miscellaneous Activity Client Information

ETF primary cycle PCF submission cutoff change from 8:00 PM ET to 10:00 PM ET

Thu, 11 Jun 2026 00:00:00 -0500

ETF primary cycle PCF submission cutoff change from 8:00 PM ET to 10:00 PM ET

Notice: A9781

Summary:

NSCC is providing notice of a change to the submission cutoff time for the primary cycle of the ETF Portfolio Composition File (“PCF”). Effective June 12, 2026, the primary cycle submission cutoff will change from 8:00 PM ET to 10:00 PM ET.

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 05 Jun 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9777

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Holiday Schedule: Independence Day 2026

Fri, 05 Jun 2026 00:00:00 -0500

Holiday Schedule: Independence Day 2026

Notice: a9778

Summary:

Holiday Important Notices are intended to provide clients notice of DTCC’s U.S. holiday observance and how it will impact Clearing and Settlement services, depending on exchange and bank closures.

ACATS FOR ALTERNATIVE INVESTMENTS

Tue, 02 Jun 2026 00:00:00 -0500

ACATS FOR ALTERNATIVE INVESTMENTS

Notice: A9774

Summary:

ACATS FOR ALTERNATIVE INVESTMENTS

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 29 May 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9776

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Submission of Rule Filing SR-NSCC-2026-008 – Enhance NSCC’s Clearing Fund Methodology

Tue, 26 May 2026 00:00:00 -0500

Submission of Rule Filing SR-NSCC-2026-008 – Enhance NSCC’s Clearing Fund Methodology

Notice: a9754

Summary:

Submission of Rule Filing SR-NSCC-2026-008 – Enhance NSCC’s Clearing Fund Methodology

Holiday Schedule: Juneteenth 2026

Fri, 22 May 2026 00:00:00 -0500

Holiday Schedule: Juneteenth 2026

Notice: a9773

Summary:

Holiday Important Notices are intended to provide clients notice of DTCC’s U.S. holiday observance and how it will impact Clearing and Settlement services, depending on exchange and bank closures.

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 22 May 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9772

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Enhanced Transmission Schedule for Networking Account Conversion/Update & Transfer/Acknowledgment Files

Wed, 20 May 2026 00:00:00 -0500

Enhanced Transmission Schedule for Networking Account Conversion/Update & Transfer/Acknowledgment Files

Notice: a9769

Summary:

Effective October 19, 2026, National Securities Clearing Corporation (NSCC) will expand the Transmission Schedule for Networking Account Conversion/Update & Transfer/Acknowledgment (“Conversion”) Files. The expanded Networking Conversion Files Transmission Schedule will support multiple intra-day processing cycles, providing clients with additional processing windows.

ACATS FOR INSURANCE REWRITE

Mon, 18 May 2026 00:00:00 -0500

ACATS FOR INSURANCE REWRITE

Notice: a9761

Summary:

This notice details the ACATS for Insurance enhancements to streamline the existing annuity transfer process.

ACATS For Insurance Rewrite

Mon, 18 May 2026 00:00:00 -0500

ACATS For Insurance Rewrite

Notice: a9767

Summary:

This NSCC notice details updates to ACATS for Insurance (aka ACATS/IPS) functionality aimed at streamlining the process. Starting November 2026, ACATS will discontinue support for Insurance Registration when transmitting annuities through its service.

CTS & UTC DTCC PORTAL - LEGACY APPLICATIONS

Fri, 15 May 2026 00:00:00 -0500

CTS & UTC DTCC PORTAL - LEGACY APPLICATIONS

Notice: A9771

Summary:

Legacy CTS and UTC web applications will be decommissioned effective May 29th, 2026

UNIVERSAL TRADE CAPTURE EXCHANGE TESTING FOR TEXAS STOCK EXCHANGE (TXSE)

Fri, 15 May 2026 00:00:00 -0500

UNIVERSAL TRADE CAPTURE EXCHANGE TESTING FOR TEXAS STOCK EXCHANGE (TXSE)

Notice: A9770

Summary:

As part of its launch preparation, Texas Stock Exchange will be conducting industry wide testing starting June 6, 2026. NSCC will be supporting this via UTC in the PSE env.

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 15 May 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9765

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

NSCC Information for the Confirmation of a Cybersecurity Program / Compliance to Rule File: SR-NSCC-2019-003

Fri, 15 May 2026 00:00:00 -0500

NSCC Information for the Confirmation of a Cybersecurity Program / Compliance to Rule File: SR-NSCC-2019-003

Notice: a9768

Summary:

DTCC Client Cyber Program Confirmation Form Requirement for NSCC Members

ETF Web Technology Platform Upgrade

Tue, 12 May 2026 00:00:00 -0500

ETF Web Technology Platform Upgrade

Notice: a9764

Summary:

DTCC is implementing a technology platform upgrade for the ETF Web application as part of its ongoing modernization efforts.
This upgrade transitions ETF Web from the legacy WebSphere Application Server (WAS) to a modern architecture leveraging Apache Tomcat and Java 17, with updated frameworks aligned to current industry standards.

I&RS 2026 SUMMER ENHANCEMENT RELEASE 1

Tue, 12 May 2026 00:00:00 -0500

I&RS 2026 SUMMER ENHANCEMENT RELEASE 1

Notice: a9762

Summary:

I&RS 2026 SUMMER ENHANCEMENT RELEASE 1

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 08 May 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9760

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

CNS Modernization: All CSV Reports Available on DTCC Learning

Mon, 04 May 2026 00:00:00 -0500

CNS Modernization: All CSV Reports Available on DTCC Learning

Notice: a9759

Summary:

CNS Modernization: All CSV Reports Available on DTCC Learning

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 01 May 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9757

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Submission of Rule Filing SR-NSCC-2026-007 – Facilitate the Exchange of a Mutual Fund Share to an Exchange-Traded Fund Share, Shorten the Settlement Time for Certain Networking Payments, and Clarify Certain Fees

Fri, 01 May 2026 00:00:00 -0500

Submission of Rule Filing SR-NSCC-2026-007 – Facilitate the Exchange of a Mutual Fund Share to an Exchange-Traded Fund Share, Shorten the Settlement Time for Certain Networking Payments, and Clarify Certain Fees

Notice: a9758

Summary:

Additional Clarifications for Fund/SERV Mutual Fund to ETF Share Class Exchange Automated Solution

Wed, 29 Apr 2026 00:00:00 -0500

Additional Clarifications for Fund/SERV Mutual Fund to ETF Share Class Exchange Automated Solution

Notice: a9756

Summary:

This notice supplements Important Notices a9680, a9692, and 9741 and provides additional guidance and clarification regarding the automated Mutual Fund to ETF Share Class Exchange solution and Fund/SERV record layouts.

Holiday Schedule - Memorial Day 2026

Mon, 27 Apr 2026 00:00:00 -0500

Holiday Schedule - Memorial Day 2026

Notice: a9755

Summary:

Holiday Important Notices are intended to provide clients notice of DTCC’s U.S. holiday observance and how it will impact Clearing and Settlement services, depending on exchange and bank closures.

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 24 Apr 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9753

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

Mutual Fund Profile Security Enhancements – Collective Investment Trust (CIT) and Trump Account Social Code

Thu, 23 Apr 2026 00:00:00 -0500

Mutual Fund Profile Security Enhancements – Collective Investment Trust (CIT) and Trump Account Social Code

Notice: a9749

Summary:

National Securities Clearing Corporation (NSCC) will implement enhancements to the Mutual Fund Profile Service II – Profile Security Database (Profile Security) to further support CIT Fund products and provide a standard method to identify Trump Accounts.

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 17 Apr 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9752

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

OBLIGATION WAREHOUSE Web Application Upgrade – Updated PSE Release

Wed, 15 Apr 2026 00:00:00 -0500

OBLIGATION WAREHOUSE Web Application Upgrade – Updated PSE Release

Notice: A9750

Summary:

The upgraded OW Web application will be released in the PSE (pre-production) environment on April 29th 2026. Clients can begin testing the new system on this date.

CNS Modernization Client Testing Plan to Begin July 13, 2026 Part II (CSV Reports Available on DTCC Learning)

Wed, 15 Apr 2026 00:00:00 -0500

CNS Modernization Client Testing Plan to Begin July 13, 2026 Part II (CSV Reports Available on DTCC Learning)

Notice: a9751

Summary:

CNS Modernization Client Testing Plan to Begin July 13, 2026 Part II (CSV Reports Available on DTCC Learning)

NSCC BEGINS COLLECTING FEES FOR NYSE

Tue, 14 Apr 2026 00:00:00 -0500

NSCC BEGINS COLLECTING FEES FOR NYSE

Notice: A9748

Summary:

Effective April 2026, National Securities Clearing Corporation (“NSCC”) will begin collecting fees through its consolidated settlement system for NYSE

CHANGES IN THE LIST OF PARTICIPANTS

Fri, 10 Apr 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9747

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

OBLIGATION WAREHOUSE Web Application Upgrade – Updated PSE Release

Tue, 07 Apr 2026 00:00:00 -0500

OBLIGATION WAREHOUSE Web Application Upgrade – Updated PSE Release

Notice: A9746

Summary:

As referenced in Important Notice A9723, NSCC is in the process of enhancing the Obligation Warehouse Web application by migrating it to an upgraded version utilizing a newer Angular framework. This enhancement aims to improve the application's overall appearance and user experience. Note the change to the proposed schedule:

The PSE Release for the upgraded application is now TBD.

ETF Options Clearing Connect Enhancement: SEC Rule Filing Approval and Go-Live date

Thu, 02 Apr 2026 00:00:00 -0500

ETF Options Clearing Connect Enhancement: SEC Rule Filing Approval and Go-Live date

Notice: A9745

Summary:

ETF Options Clearing Connect Enhancement: SEC Rule Filing Approval and Go-Live date

Submission of Rule Filing SR-NSCC-2026-006 – Amend the NSCC Rules to Describe NSCC’s Ability to Support Industry Efforts to Extend Trading Hours for the U.S. Equity Markets

Thu, 02 Apr 2026 00:00:00 -0500

Submission of Rule Filing SR-NSCC-2026-006 – Amend the NSCC Rules to Describe NSCC’s Ability to Support Industry Efforts to Extend Trading Hours for the U.S. Equity Markets

Notice: a9744

Summary:

Submission of Rule Filing SR-NSCC-2026-006 – Amend the NSCC Rules to Describe NSCC’s Ability to Support Industry Efforts to Extend Trading Hours for the U.S. Equity Markets

CHANGES IN THE LIST OF PARTICIPANTS

Thu, 02 Apr 2026 00:00:00 -0500

CHANGES IN THE LIST OF PARTICIPANTS

Notice: a9743

Summary:

Updates/changes impacting DTCC Participant(s)/Member(s) and/or Sponsored Member(s) noted here.

CNS Modernization Client Testing Plan to Begin July 13, 2026

Tue, 31 Mar 2026 00:00:00 -0500

CNS Modernization Client Testing Plan to Begin July 13, 2026

Notice: a9742

Summary:

CNS Modernization Client Testing Plan to Begin July 13, 2026

NSCC

CNS® Modernization: Extension of CNS Print Image OutputAvailability and Adjustment to Member Testing Timeline

CHANGES IN THE LIST OF PARTICIPANTS

Cross-endorsed Net Credit and Net Debit Balances from Settlement Rollover

X9 Financial Public Key Infrastructure (PKI) Certificates

ETF Modernization Changes and Timeline Update

UNIVERSAL TRADE CAPTURE EXCHANGE LAUNCH FOR TEXAS STOCK EXCHANGE (TXSE)

CHANGES IN THE LIST OF PARTICIPANTS

Notice of Actions Taken Under NSCC Rule 60 – Market Disruption and Force Majeure and DTC Rule 38 - Market Disruption and Force Majeure

Obligation Warehouse Updated Prod release

CHANGES IN THE LIST OF PARTICIPANTS

Effective Date of Additional Risk Slices to Support 24x5 Trading

CHANGES IN THE LIST OF PARTICIPANTS

Submission of Rule Filing SR-NSCC-2026-009 – Proposed Enhancements to NSCC’s Supplemental Liquidity Deposit Rules

CHANGES IN THE LIST OF PARTICIPANTS

NSCC CNS Transformation Impact on NSCC SFT Clearing Miscellaneous Activity Client Information

ETF primary cycle PCF submission cutoff change from 8:00 PM ET to 10:00 PM ET

CHANGES IN THE LIST OF PARTICIPANTS

Holiday Schedule: Independence Day 2026

ACATS FOR ALTERNATIVE INVESTMENTS

CHANGES IN THE LIST OF PARTICIPANTS

Submission of Rule Filing SR-NSCC-2026-008 – Enhance NSCC’s Clearing Fund Methodology

Holiday Schedule: Juneteenth 2026

CHANGES IN THE LIST OF PARTICIPANTS

Enhanced Transmission Schedule for Networking Account Conversion/Update & Transfer/Acknowledgment Files

ACATS FOR INSURANCE REWRITE

ACATS For Insurance Rewrite

CTS & UTC DTCC PORTAL - LEGACY APPLICATIONS

UNIVERSAL TRADE CAPTURE EXCHANGE TESTING FOR TEXAS STOCK EXCHANGE (TXSE)

CHANGES IN THE LIST OF PARTICIPANTS

NSCC Information for the Confirmation of a Cybersecurity Program / Compliance to Rule File: SR-NSCC-2019-003

ETF Web Technology Platform Upgrade

I&RS 2026 SUMMER ENHANCEMENT RELEASE 1

CHANGES IN THE LIST OF PARTICIPANTS

CNS Modernization: All CSV Reports Available on DTCC Learning

CHANGES IN THE LIST OF PARTICIPANTS

Submission of Rule Filing SR-NSCC-2026-007 – Facilitate the Exchange of a Mutual Fund Share to an Exchange-Traded Fund Share, Shorten the Settlement Time for Certain Networking Payments, and Clarify Certain Fees

Additional Clarifications for Fund/SERV Mutual Fund to ETF Share Class Exchange Automated Solution

Holiday Schedule - Memorial Day 2026

CHANGES IN THE LIST OF PARTICIPANTS

Mutual Fund Profile Security Enhancements – Collective Investment Trust (CIT) and Trump Account Social Code

CHANGES IN THE LIST OF PARTICIPANTS

OBLIGATION WAREHOUSE Web Application Upgrade – Updated PSE Release

CNS Modernization Client Testing Plan to Begin July 13, 2026 Part II (CSV Reports Available on DTCC Learning)

NSCC BEGINS COLLECTING FEES FOR NYSE

CHANGES IN THE LIST OF PARTICIPANTS

OBLIGATION WAREHOUSE Web Application Upgrade – Updated PSE Release

ETF Options Clearing Connect Enhancement: SEC Rule Filing Approval and Go-Live date

Submission of Rule Filing SR-NSCC-2026-006 – Amend the NSCC Rules to Describe NSCC’s Ability to Support Industry Efforts to Extend Trading Hours for the U.S. Equity Markets

CHANGES IN THE LIST OF PARTICIPANTS

CNS Modernization Client Testing Plan to Begin July 13, 2026

CNS® Modernization: Extension of CNS Print Image Output
Availability and Adjustment to Member Testing Timeline