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Latest Important Notices

Use below listing to find important notices posted starting on September 1st, 2020. To find important notices uploaded prior to September 1st, 2020, please check the “Important Notices Archive” located at the bottom of this page. 

    a9793

    Jul 10, 2026 CHANGES IN THE LIST OF PARTICIPANTS

    A9794

    Jul 09, 2026 Cross-endorsed Net Credit and Net Debit Balances from Settlement Rollover

    A9791

    Jul 08, 2026 X9 Financial Public Key Infrastructure (PKI) Certificates

    a9792

    Jul 07, 2026 ETF Modernization Changes and Timeline Update

    A9790

    Jul 02, 2026 UNIVERSAL TRADE CAPTURE EXCHANGE LAUNCH FOR TEXAS STOCK EXCHANGE (TXSE)

    a9789

    Jul 02, 2026 CHANGES IN THE LIST OF PARTICIPANTS

    a9788

    Jun 30, 2026 Notice of Actions Taken Under NSCC Rule 60 – Market Disruption and Force Majeure and DTC Rule 38 - Market Disruption and Force Majeure

    A9786

    Jun 26, 2026 Obligation Warehouse Updated Prod release

    a9785

    Jun 26, 2026 CHANGES IN THE LIST OF PARTICIPANTS

    a9784

    Jun 22, 2026 Effective Date of Additional Risk Slices to Support 24x5 Trading

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Important Notices Archive

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MBS898-20

Aug 31, 2020 Clearing, Pool Netting, and EPN Services – FNMA/UMBS – Inclusion of New Coupon

13049-20

Aug 31, 2020 Tax Relief Country: Ireland Security: Medtronic PLC CUSIP: G5960L103 Record Date: 9/25/2020 Payable Date: 10/16/2020 Relief at Source CA Web Cut-Off: 10/7/2020 8:00 PM ET Quick Refund CA Web Cut-Off: 10/26/2020 8:00 PM

a8893

Aug 31, 2020 New Features Now Available in NSCC Risk Client Portal

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