Page Metadata
U.S. Options

Nasdaq MRX

Delivers competitive Priority Customer rebates and a full suite of auction and crossing orders.

Nasdaq MRX

Nasdaq MRX (MRX) is a customer priority, pro rata allocation exchange and offers customer priority with Market Makers, preferenced orders and pro rata allocations. 

MRX follows a classic or traditional fee model where customers receive marketing fees/rebates and non-customers pay fees.


  • Price Improvement: Only available on MRX, the Member Volume Program (MVP) provides aggressive Priority Customer rebates which are retroactive to the first contract traded.
  • Routing Strategies: Orders can be marked with the option of Flash and Route, Flash and Do Not Route (DNR), and do not Flash do not Route.
  • Full Suite of Auction and Crossing Orders: MRX offers price improvement mechanism (PIM), facilitation, solicitation, and Qualified Contingent Cross (QCC) order type.
  • Market Maker Appointments: There is no charge for market maker appointments.


MRX lists all of the industry’s most active options classes. Nasdaq’s options exchanges unique market structure and technology fosters deep and liquid markets with competitive prices.

Risk Management

Comprehensive risk management features are built into MRX’s trading technology and include the following protections.

Market Wide Speed Bump
  • Inactivates quotes and prevents any quotes from being activated.
  • Triggered based on a value, which is defined as the number of curtailment events within a specified time period across the entire market.
  • Value defined by the Market Maker and implemented by Market Operations.
  • Threshold established and calculated for MRX independently.
  • Quote reactivation and re-entry into the market requires contacting Market Operations.
Price Limit CheckCore Functionality: Simple Orders entered through the exchange BBO by the greater of $1.00 or 1% during the regular market trading state are rejected.
Cancel on Disconnect (FIX and DTI connections)Cancels all orders open in the market on disconnect.
Vertical Spread CheckCore Functionality:
  • Vertical spreads entered with a negative limit price will be rejected.
  • Vertical spreads are prevented from legging in to regular quotes if the net trade would result in a negative price.
Spread Trade Through LimitCore Functionality: A spread will not trade through the NBBO by more than $0.05 per leg of the complex strategy.


Through our primary data center, firms can access all eleven of Nasdaq's U.S. Markets via Direct Connection or Co-Location. Nasdaq also offers customers the ability to connect to our markets from key financial data centers outside our Carteret facility through our Point of Presence Service.

Trading Protocols:

  • Specialized Quote Interface (SQF):Market makers provide liquidity using SQF, which allows Market Makers to supply up to 200 quotes in one message.
  • Financial Information eXchange (FIX):Is a vendor-neutral standard message protocol used for submitting orders to MRX.
  • OUCH to Trade Options (OTTO):This proprietary protocol, based on OUCH technology, provides customers with a fast and efficient protocol allowing subscribers to efficiently enter options orders into and receive executions from Nasdaq.
  • Clearing Trade Interface (CTI):The Options Clearing Trade Interface is a product that disseminates clearing trades, trade corrections, trade cancels and optional administrative messages.

If you have questions, contact Nasdaq Subscriber Services or call +1 212 231 5180.

Market Data

Gain direct access to the full options data feed suite via multiple exchange venues—based on time, complexity, and uniformity. Through trader sentiment tools and aggregated trading activity indicators, market participants can analyze options trade and volume data, and create and test trading models and strategies.

If you have questions, please contact Nasdaq Market Data Sales.

News & Alerts

Subscribe to receive Nasdaq Alerts

TradeTalks Newsletter

Recent Posts{{catTitle ? " in " + catTitle : ""}}
{{post.Date | date:'MMM d yyyy'}}
Scroll up