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Monday, January 07, 2019

Options Technical Update #2019 - 1
Nasdaq GEMX and MRX Update System Settings

Category:

  • System Impact

Markets Impacted:

Contact Information:

Resources:

On Tuesday, January 22, 2019, Nasdaq GEMX (GEMX) will update the system settings related to the Market Order Spread Potection. Nasdaq MRX (MRX) will update the same system settings on Monday, January 28. 2019.

Currently, simple market orders are rejected if the bid/ask differential of the NBBO and internal BBO are wider than a configurable amount, currently set to $5.00 for all symbols. As of Tuesday, January 22nd on GEMX and Monday, January 28th on MRX, all symbols will have the threshold configured to $5.00, with the following exceptions:

Market Order Spread Protection Bid/Ask Differential Allowance of $20.00:

AMZN

CMG

ICPT

NOC

SIVB

AZO

CSGP

ISRG

NTES

TDG

BLK

EQIX

LMT

ORLY

TLRY

CHE

GOOG

MED

REGN

TSLA

CHTR

GOOGL

MELI

ROP


Market Order Spread Protection Bid/Ask Differential Allowance of $22.00:

BKNG

 

MKL

 

NDX

 


Please note that any future changes made to the quote width requirements will also apply to these bid/ask differential allowances. Market order spread protection settings can be found on the system settings pages for each market.

For questions, please contact Market Operations at +1 215 496 1571 or optionshelpdesk@nasdaq.com.


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