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Tuesday, February 11, 2025

Options Technical Update #2025 - 1
Update : Nasdaq ISE Introduces Electronic FLEX Options

Category:

  • Industry Announcement

Markets Impacted:

Contact Information:

As previously announced in OTU2024-16, ISE will support trading electronic FLEX Options through existing Order Entry Protocols, Trade Drops and Market Data Feeds. Electronic FLEX will be available via FLEX Auction, FLEX Price Improvement Mechanism, and FLEX Solicited Order Mechanism.

Update :The Simple Instrument Purge Notification (Message Type/Subtype: "NP" ) on SQF will be decommissioned and along with that the notification type "P" will be removed. Firms are expected to use Instrument Purge Notification (Message Type/ Subtype: "ND") and the corresponding notification type of "Z".

Technical Specifications and Frequently Asked Questions (FAQ)

The following Specification Documents and an FAQ are now available on Nasdaq Specs Hub. Please review all documents and follow up with Market Operations with any questions.

Nasdaq will send out an updated alert announcing an implementation date. Please contact Market Operations with any questions.

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