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Frequently Asked Questions
 Which Market Makers are Required to Quote During the Opening Process?
Identification Number 1911

Only LMMs and PMMs are obligated to submit a Valid Width Quote to open a series on Phlx, ISE, GEMX and MRX during the Opening Process.  The Valid Width Quote of a Market Maker may open an option series, however Market Makers are not obligated to submit Valid Width Quotes during an Opening Process on Phlx, ISE, GEMX and MRX.

Please see PHLX/ISE/GEMX/MRX Options 3, Section 8 for more details.

Publication Date*: 6/30/2026 Mailto Link Identification Number: 1911
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