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A new standard for performance.

IEX is designed to provide superior execution quality, raising the bar for trading in U.S. equities.

30 Day Average on IEX

Daily Matched Shares

Daily Notional Value

Order types

IEX offers a range of order types that are designed to help Members achieve high-quality performance when trading on the Exchange.

The IEX Signal

The IEX Signal is designed to identify when the quote is unstable and helps IEX protect resting orders.

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 and end times
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.


Holiday 2021 2022 2023
New Years Day Fri Jan 1 - Mon Jan 2 (observed)
Martin Luther King Jr. Day Mon Jan 18 Mon Jan 17 Mon Jan 16
Presidents Day Mon Feb 15 Mon Feb 21 Mon Feb 22
Good Friday Fri Apr 2 Fri Apr 15 Fri Apr 7
Memorial Day Mon May 31 Mon May 30 Mon May 29
Day before Independence Day - - Mon Jul 3*
Independence Day Mon July 5 (observed) Mon Jul 4 Tue Jul 4
Labor Day Mon Sep 6 Mon Sep 5 Mon Sep 4
Thanksgiving Day Thu Nov 25 Thu Nov 24 Thu Nov 23
Day after Thanksgiving Day Fri Nov 26* Fri Nov 25* Fri Nov 24*
Day before Christmas Fri Dec 24 - -
Christmas - Mon Dec 26 (observed) Mon Dec 25

*Market closes at 1:00 p.m. ET.

Securities eligible for trading

Pursuant to IEX Rule 11.120, Investors Exchange shall designate securities for trading. Any class of securities listed or admitted to unlisted trading privileges on the Exchange shall be eligible to become designated for trading on the Exchange in accordance with the Rules of Chapters 14 and 16.

All securities designated for trading are eligible for odd-lot, round-lot and mixed-lot executions, unless otherwise indicated by the Exchange or limited pursuant to IEX Rules.

See a list of eligible symbols ›

Technology partners

Our Technology Partners include Order Management Systems (OMS), Execution Management Systems (EMS), Datacenter Operators, Network Connectivity Providers, Algorithm and Smart Order Routing Providers, and other software systems providers who connect IEX with our certified Members and other venues.

Within IEX, we have decades of experience collaborating with top-of-class systems providers. Together, we look forward to maintaining a high standard of technological and operational excellence.

Connected service bureaus

Bloomberg SSEOMS
Convergex Realtick
FlexTrade Systems
Pico Quantitative Trading
Pragma Securities
Raptor OMEX Trading Systems
SS&C Technologies
Succession Systems
Sungard BRASS
Takion Technologies


The following broker-dealers are approved members of Investors Exchange.

Abel Noser LLC
ABN Amro Clearing Chicago LLC
Allen & Company, LLC
Alpha Trading L.P.
Apex Clearing Corporation
Archipelago Securities, LLC
ATM Execution LLC
AXOS Clearing LLC
Banyan Securities, LLC
Barclays Capital Inc.
Bay Crest Partners LLC
BB&T Securities LLC
Bluefin Trading LLC
BMO Capital Markets Corp
BofA Securities
C&C Trading, LLC
Canaccord Genuity Inc.
Cantor Fitzgerald & Co
Capital Institutional Services, Inc.
CBOE Trading Inc.
CF Global Trading, LLC
Citadel Securities, LLC
Citigroup Global Markets Inc.
Clear Street Markets, LLC
Clearpool Execution Services, LLC
CLSA Americas, LLC
Coda Markets, Inc.
Cornerstone Macro, LLC
Cowen and Company, LLC
Craig-Hallum Capital Group LLC
Credit Suisse Securities USA
Critical Trading, LLC
Cutler Group, LP
D.A. Davidson & Co.
Daiwa Capital Markets America Inc.
Dash Financial LLC
Davenport & Company, LLC
DeMatteo Monness LLC
Deutsche Bank Securities Inc.
Dowling & Partners Securities, LLC
DRW Securities, LLC
E*TRADE Securities LLC
Electronic Transaction Clearing, Inc.
Evercore Group LLC
First Analysis Securities Corporation
FIS Brokerage & Securities Services LLC
Flow Traders U.S. LLC
G1 Execution Services
Global Execution Brokers
Goldman, Sachs and Company
Gordon, Haskett Capital Corp.
Great Pacific Securities
Great Point Capital, LLC
GTS Securities, LLC
Guggenheim Securities
Guzman & Company
Hardcastle Trading USA LLC
Hilltop Securities Inc.
HRT Financial LLC
HSBC Securities (USA) Inc.
IEX Services LLC
IMC Chicago LLC
Industrial and Commercial Bank of China Financial Services
Instinet, LLC
Interactive Brokers LLC
INTL FCStone Financial Inc.
Invesco Capital Markets, Inc.
ITG Inc.
J. P. Morgan Securities LLC
Jane Street Capital, LLC
Jane Street Execution Services, LLC
Jefferies LLC
JMP Securities LLC
JNK Securities Corporation
Johnson Rice & Company, LLC
Jump Trading LLC
Keefe, Bruyette & Woods, Inc.
KeyBanc Capital Markets Inc.
Latour Trading LLC
Leerink Partners
Lek Securities Corp
Lime Brokerage, LLC
Macquarie Capital (USA) Inc.
Maxim Group, LLC
Meridian Equity Partners
Merrill Lynch Professional Clearing Corp.
Merrill Lynch, Pierce, Fenner & Smith Incorporated
Mirae Asset Securities (USA), Inc.
Mizuho Securities USA Inc.
MKM Partners LLC
Morgan Stanley & Co., LLC
NASDAQ Execution Services, LLC
National Financial Services LLC
Needham & Company, LLC
Northland Securities Inc.
Old Mission Capital LLC
Olivetree Financial, LLC
O'Neil Securities
Penserra Securities LLC
Pershing LLC
Pictet Overseas Inc.
Piper Sandler & Co
Quantlab Brokerage LLC
Raymond James & Associates Inc
RBC Capital Markets LLC
Redburn (USA) LLC
Robert W. Baird & Co., Inc.
Robotti & Company LLC
Rosenblatt Securities Inc.
Russell Investments Implementation Services, LLC
Sanford C. Bernstein & Co., LLC
Scotia Capital (USA) Inc.
Seaport Global Securities LLC
SG Americas Securities, LLC
Sidoti & Company, LLC
SMBC Nikko Securities America, Inc.
SpeedRoute LLC
Stephens Inc.
Stifel Nicolaus & Co., Inc.
Stuart Frankel & Co. Inc.
Sturdivant & Co., Inc.
Sun Trading LLC
Susquehanna Financial Group, LLLP
Susquehanna Securities
Telsey Advisory Group, LLC
Themis Trading LLC
TJM Investments LLC
TradeStation Securities, Inc.
TRC Markets LLC
Two Sigma Securities, LLC
UBS Securities LLC
USCA Securities, LLC
Velox Clearing LLC
Virtu Americas LLC
Wall Street Access
Wedbush Securities
Wells Fargo Securities, LLC
Wolverine Execution Services, LLC
XR Securities LLC