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
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Daily Matched Shares
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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. |
Holidays
| 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.
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 |
| DAS |
| Fidessa |
| FlexTrade Systems |
| InfoReach |
| LiquidityBook |
| Mixit |
| Pico Quantitative Trading |
| Pragma Securities |
| qSpark |
| Raptor OMEX Trading Systems |
| Rithmic |
| SS&C Technologies |
| Succession Systems |
| Sungard BRASS |
| Takion Technologies |
| TRAFiX |
Members
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 |
| BTIG LLC |
| 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 |