Time Warp in Trading: IEX Delays Data by Minutes, Not Milliseconds
Published Date: 2/3/2025
Notice
Summary
Investors Exchange (IEX) is changing how it defines “real-time” and “delayed” market data. Instead of calling data delayed after just 15 milliseconds, they’ll wait 15 minutes before labeling it delayed. This change starts February 1, 2025, giving data users time to adjust their subscriptions and possibly save money or get data that fits their needs better.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
IEX shifts real-time cutoff to 15 minutes
If you receive market data from the Investors Exchange (IEX), IEX changed the cutoff that separates “Real‑Time” data from “Delayed” data from 15 milliseconds to 15 minutes. This change takes effect February 1, 2025 and is intended to give Data Subscribers time to update their market data subscriptions and possibly save money or get data that fits their needs better.
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