A period of electronic trading that takes place prior to the start of the regular trading session. Compare to After-Hours Trading.
Related information about pre-market:
- Premarket Stock Trading - CNNMoney
 Coverage of premarket trading, including futures information for the S&P 500,   Nasdaq Composite and Dow Jones Industrial Average.
 
- Pre-Market Trading | Premarket Stock Quotes - NASDAQ.com
 Pre-Market Stock Quotes - NASDAQ offers premarket quotes and pre market   activity data before the stock market opens for US and world markets.
 
- Pre-Market Most Active Stocks - NASDAQ.com
 Premarket Most Active Stocks - Includes Ten Most Active Share Volume, Ten   Most Advanced, Ten Most Declined for NASDAQ stocks.
 
- AAPL Pre-Market Trading - NASDAQ.com
 Apple Inc. (AAPL) Pre-Market Trading - View free premarket stock trades at   NASDAQ.com.
 
- Pre-Market Data, Stock Market Quotes, Fair Value, Futures, Volatility ...
 Dow, NASDAQ, S&P 500 Futures and Fair Value data calculated before the US   Stock Market opens.
 
- Pre-Market Outlook | Benzinga
 A market obsessed with daily fiscal cliff headlines is as volatile as ever. One   positive headline is followed by a negative one. The market didn't like comments   by ...
 
- Extended hours trading - Wikipedia, the free encyclopedia
 Pre-market trading occurs from 7:00 to 9:30 a.m. ET. National Association of   Securities Dealers (NASD) members who voluntarily enter quotations during the ...
 
- Pre-Market Definition | Investopedia
 A period of trading activity that occurs before the regular market session. The pre-  market trading session typically occurs between 8:00 - 9:30 A.M. EST each ...