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Trade Hours & Calendar

MIAX Options

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Hours of Operation

TIME (US EST ZONE) DESCRIPTION
5:00 AM - 6:59 AM
Start of System Hours
  • Dissemination of Start of Session message and multicast heartbeats over all market data feeds
  • Dissemination of symbol reference data over all market data feeds and retransmission services
7:00 AM
MIAX Express Interface (MEI) Startup
  • Firms can connect to the MIAX Express Interface (MEI) and download products.
7:30 AM
Firm Interface Startup Time
  • Firms can connect to the FIX Gateway and conduct pre-market order activity. All order activity during this time period WILL affect the live book.
  • Firms can send messages over MEI. All MEI activity during this period, prior to the Live Quote Window (LQW), will be acknowledged for connectivity verification purposes, but WILL NOT affect the live quote state.
9:15 AM
Live Quote Window (LQW)
  • Start of Quoting. Quotes entered during LQW WILL be used in Opening process.
  • Note, the LQW for SPIKES Settlement Options on SPIKES Settlement Day is 8:30 AM. Therefore, on SPIKES Settlement Day the start of quoting for SPIKES Settlement Options; i.e. only SPY Options in the expiration used to calculate the SPIKES Settlement, will be one hour prior to the Open.
9:30 AM - 4:00 PM
Trading Session for Equity Options (ends at 1:00 pm on early closing days)
  • MIAX stops accepting Orders and Quotes at the end of the Trading Session
9:30 AM - 4:15 PM
Trading Session for select ETF and Index Options (ends at 1:15 pm on early closing days)
  • MIAX stops accepting Orders and Quotes at the end of the Trading Session
4:25 PM
End of Order Cancel Acceptance
  • MIAX will stop accepting cancels for orders (ends at 1:25 pm on early closing days)
4:25 PM - 5:00 PM
Dissemination of Nothing Done Messages (1:25 pm to 2:00 pm on early closing days)
  • Final trade corrections and clearing adjustments

Calendar

HOLIDAY 2022 2023
New Years Day
-
Monday, January 2nd
(New Year's holiday observed)
Martin Luther King Jr. Day
Monday, January 17th
Monday, January 16th
Washington's Birthday
Monday, February 21st
Monday, February 20th
Good Friday
Friday, April 15th
Friday, April 7th
Memorial Day
Monday, May 30th
Monday, May 29th
Juneteenth National Independence Day
Monday, June 20th
(Juneteenth holiday observed)
Monday, June 19th
Independence Day
Monday, July 4th
Monday, July 3rd**
Tuesday, July 4th
Labor Day
Monday, September 5th
Monday, September 4th
Thanksgiving Day
Thursday, November 24th
Friday, November 25th*
Thursday, November 23rd
Friday, November 24th**
Christmas
Monday, December 26th
(Christmas holiday observed)
Monday, December 25th

* 2022: Each market will close early at 1:00 p.m. (1:15 p.m. for eligible options) on Friday, November 25, 2022. All times are Eastern Time.

** 2023: Each market will close early at 1:00 p.m. (1:15 p.m. for eligible options) on Monday, July 3, 2023 and Friday, November 24, 2023. All times are Eastern Time.

Have any questions or concerns? Feel free to Contact Us.

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