Market Maker Obligations on Exchanges

Registered market makers accept continuous two-sided quoting requirements in exchange for fee benefits and formal auction rights.

A registered market maker on a United States exchange accepts specific, enforceable quoting obligations in exchange for benefits the exchange grants only to firms holding that status. The core obligation is continuous two-sided quoting, meaning a firm must maintain both a bid and an offer within a defined distance of the national best bid and offer for a minimum share of the trading day, rather than quoting only when convenient.

Affirmative obligations require a designated market maker to provide continuous, two-sided quotes meeting minimum size and maximum spread requirements for a specified percentage of the trading day, and to maintain a fair and orderly market during volatile conditions rather than withdrawing liquidity exactly when it is most needed.

Negative obligations restrict behavior that would undermine that fairness, including certain manipulative quoting patterns and, on some exchanges, additional constraints during specific market conditions. Together these obligations are what separate a registered market maker from a proprietary trading firm that simply chooses to post competitive quotes without any formal commitment to keep doing so.

Compliance with these obligations is monitored continuously by the exchange, and a market maker falling short of the required quoting percentage over a review period can face penalties or, in more serious cases, loss of its registered status for that security. This monitoring is what makes the obligation a genuine commitment rather than a guideline a firm can quietly ignore.

In exchange for accepting these obligations, registered market makers typically receive preferential fee schedules, including enhanced rebates for adding liquidity, and a formal role in exchange auctions. On venues that use a designated market maker structure, such as the NYSE's DMM program, the designated firm also receives allocation rights and specific responsibilities during the opening and closing auctions.