Nasdaq GEMX Ditches Mandatory Primary Market Makers
Published Date: 9/18/2026
Notice
Summary
Nasdaq GEMX is changing its rules so it doesn’t have to assign a Primary Market Maker (PMM) to every options class anymore. This gives the Exchange more flexibility to decide when and where to appoint PMMs based on market needs. Traders and market makers should watch for these changes starting immediately, but no direct cost changes are expected.
Analyzed Economic Effects
4 provisions identified: 4 benefits, 0 costs, 0 mixed.
PMM Appointments Now Optional
Nasdaq GEMX changed its rule so a Primary Market Maker (PMM) may be appointed — rather than must be appointed — to each options class. The change was filed on September 2, 2026 and gives the Exchange flexibility to decide, based on market conditions and applicant availability, whether to assign a PMM for a particular options class.
Current PMMs Keep Rights and Duties
Members currently appointed as PMMs will retain their PMM appointments and will continue to have the same obligations and entitlements under GEMX rules. The rule change does not alter the substantive obligations or privileges of an appointed PMM, including intra-day quoting obligations.
CMMs Continue To Provide Liquidity
The Exchange confirms Competitive Market Makers (CMMs) will continue to provide liquidity under existing rules; CMMs are required to two-sided quote in 60% of series for classes to which they are appointed. Where no PMM is appointed, quoting and liquidity provision will proceed under the CMM framework.
Aligns With Phlx; Aims To Compete
The amendment aligns GEMX's PMM framework with Phlx, which permits but does not require a Lead Market Maker, and the Exchange says the flexibility may allow GEMX to compete more effectively for order flow. The Exchange argues this administrative flexibility does not reduce PMM obligations and could improve GEMX's ability to manage appointments by class.
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