About the Pre-Market Trading Page
Pre-Market trading activity is shown on the site from 8:00 - 9:30 AM (actual trading starts at 8:00 AM EST) every trading day. Extended trading data from The Nasdaq Stock Market is shown on a 15 minute delayed basis.
Pre-Market trading is only shown if the stock if it is a component of the Nasdaq-100 Index.

Data Definitions
Pre-Market Timethe time of the pre-market trade Eastern Standard Time. Pre-Market Pricethe trade price of the pre-market trade. Pre-Market Share Volumethe number of shares traded in each recorded premarket trade. Why Investors Care
Investors find that pre-market Nasdaq-100 trading provides a leading indicator for regular hours trading. Investors may use the data to judge the strength of buying in the stock at the time of regular market open. They may also use information gathered for the pre-market activity to judge the opening price of the stock and how long that price will generally be supported by the market.

Data Provider
Data is provided by The NASDAQ OMX Group, Inc.

Update Schedule
Every trading day during pre-market trading hours on a 15 minute delay.

Pre-Market Trading | Premarket Stock Quotes - NASDAQ.com