Equities Trading Hours
Orders may be executed on IEX or routed away from IEX during the Pre-Market, Regular Market, and Post-Market Sessions, collectively known as "System Hours." All times are in Eastern Time (“ET”).
Session | Start Time | End Time |
Begin Order Entry Acceptance | 8:00 a.m. | |
Pre-Market Session | 8:00 a.m. | 9:30 a.m. |
Regular Market Session | 9:30 a.m. | 4:00 p.m. |
Post-Market Session | 4:00 p.m. | 5:00 p.m. |
Options Trading Hours
Session | Start Time | End Time |
System Startup Completion Upon startup, heartbeats followed by the Sequence Number Reset, Underlying Ref Data and Symbol Mapping messages are published on multicast feeds. Retrasmission and snapshot services are available. | Between 6:00 a.m. and 7:00 a.m. | |
Business Open Logical session connectivity is available. | 7:30 a.m. | |
Begin Order Entry Acceptance Orders and quotes eligible for entry prior to Continuous Trading may be submitted for participation in the Opening Process and will be reflected on IEX Options DEEP. | 8:00 a.m. | |
Begin Opening Process Following the Opening Trigger (22.160(a)(4)), IEX Options will initiate the Opening Process. Upon completion of the Opening Process, the applicable symbol will transition to Continuous Trading. | 9:30 a.m.* | |
Regular Market Session (i.e. Continuous Trading Session) Trading and acceptance of orders and quotes conclude at 4:00 p.m. ET, except for eligible Late Close symbols, for which trading and acceptance of orders and quotes conclude at 4:15 p.m. ET. The list of Late Close symbols subject to extended trading eligibility are listed in the IEX Options System Settings Specification. | 9:30 a.m.* | 4:00 p.m. / 4:15 p.m.** |
System Close Any active sessions are disconnected and market data publication ends. | 5:15 p.m. |
*Timing depends on the applicable Opening Trigger.
**Market Session ends at either 4:00 p.m. or 4:15 p.m. depending on the symbol. The list of symbols with a late close are listed in the IEX Options System Settings Specification: https://www.iex.io/documents/iex-options-system-settings-specification
Market Holidays
Holiday | 2026 | 2027 | 2028 |
New Year’s Day | Thu, Jan 1 | Fri, Jan 1 | ----* |
Dr. Martin Luther King Jr. Day | Mon, Jan 19 | Mon, Jan 18 | Mon, Jan 17 |
Presidents Day | Mon, Feb 16 | Mon, Feb 15 | Mon, Feb 21 |
Good Friday | Fri, Apr 3 | Fri, Mar 26 | Fri, Apr 14 |
Memorial Day | Mon, May 25 | Mon, May 31 | Mon, May 29 |
Juneteenth National Independence Day | Fri, Jun 19 | Fri, Jun 18 (Juneteenth National Independence Day observed) | Mon, Jun 19 |
Day before Independence Day | ---- | ---- | Mon, July 3** |
Day before Independence Day | Fri, July 3 (Independence Day Observed) | Mon, July 5 (Independence Day Observed) | Tue, July 4 |
Labor Day | Mon, Sep 7 | Mon, Sep 6 | Mon, Sep 4 |
Thanksgiving Day | Thu, Nov 26 | Thu, Nov 25 | Thu, Nov 23 |
Day after Thanksgiving Day | Fri, Nov 27** | Fri, Nov 26** | Fri, Nov 24** |
Day before Christmas | Thu, Dec 24** | ---- | ---- |
Christmas | Fri, Dec 25 | Fri, Dec 24 (Christmas Day observed) | Mon, Dec 25 |
* Because New Year's Day falls on Sat, Jan 1, 2028, no holiday is observed.
** Market closes at 1:00 p.m. ET