Electronic Trading (CME Globex)

Change to E-mini S&P Options User Defined Spreads Market Data Channel

To: CME Globex and Market Data Customers

From: Global Market Solutions & Services (GMSS)

# 20240816

Notice Date: 16 August 2024

Effective Date: 22 September 2024

Effective Sunday, September 22 (trade date Monday, September 23), E-mini S&P options User Defined Spreads (UDS) (tag 1151-SecurityGroup=1V) will move from Market Data Platform (MDP) 3 Channel 311 to 323 to better load balance across the MDP 3 channels.

E-mini S&P options outrights will remain on channel 311.

Changes to Emini S&P Option User Defined Spreads Market Data Channel
PRODUCT ILINK: TAG 55-SYMBOL
MDP 3.0 TAG 1151 - SECURITY GROUP
CURRENT
MARKET DATA CHANNEL
New
MARKET DATA CHANNEL
E-mini S&P Options User Defined Spreads 1V 311 323

To facilitate this change, customers are asked to cancel all Good ‘Till Cancel (GTC) and Good ‘Till Date (GTD) orders on E-mini S&P options UDS after the close on Friday, September 20. After 16:00 CT on Friday, September 20, all remaining GT orders for these User Defined Spreads will be canceled or deleted by the CME Global Command Center (GCC).

GT orders on the E-mini S&P 500 option outrights are not affected by this change.

This change will be made available for customer testing in New Release on Monday, August 26.

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