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Frequently Asked Questions
 What are the Valid Width Quote requirements for NDX option classes?
Identification Number 1914

During the electronic opening cross, market makers are required to adhere to specific maximum bid/ask spreads that scale based on the option's premium price. A full, detailed table of these valid width quote requirements is available in Options Regulatory Alert #2026-18.

Publication Date*: 6/30/2026 Mailto Link Identification Number: 1914
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