Seeking Alpha sources ticker quotes from IEX, our data vendor. We have two levels of service agreement with our vendor:
- Real-Time Quotes:
- Quotes for tickers that trade on the IEX exchange are delivered in real time., These are usually frequently traded securities. Ex. AAPL, MSFT etc.
- The system allows a 15-minute grace period for real-time quotes. If the time difference between two quotes is less than 15 minutes, the quote is labeled “Real-Time”.
2. Delayed Quotes:
- Quotes for thinly traded securities are delivered in delayed form, i.e. stocks for which no trade has happened on the IEX exchange in the last 15 minutes.
- In such cases, the most recent quote from another exchange is displayed with a “Delayed” label.
Both the Real-Time and Delayed labels are displayed on the symbol page.
Also, aftermarket quotes are delayed by 15 minutes.
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