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Product LoginFriday, May 9, 2025
Options Technical Update #2025 - 7
Nasdaq ISE Migration To New Protocol Versions
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Markets Impacted:Contact Information:
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As previously announced in OTU2025-2, ISE introduced electronic Flex on Tuesday, April 22nd. Currently, it supports both older and newer versions of protocols in parallel. All firms are required to migrate to the newer versions of the following protocols by June 9th, 2025:
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.
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