Extended - hours trading - Wikipedia Extended - hours trading Not to be confused with Late trading. Extended - hours trading is stock trading that happens either before or after the normal trading hours of a stock exchange, i.e., pre-market trading or after - hours trading. After - hours trading is known as the buying and selling of securities when the major markets are closed. Since 1985, the regular trading hours for major exchanges in the United States, such as the New York Stock Exchange and the Nasdaq Stock Market, have been from 9 : 30 a.m. to 4 : 00 p.m. Eastern Time ( ET ). Pre-market trading occurs from 4 : 00 a.m. to 9 : 30 a.m. ET, although the majority of the volume and liquidity come to the pre-market at 8 : 00AM ET. After - hours trading on a day with a normal session occurs from 4 : 00 p.m. to 8 : 00 p.m. ET. Market makers and specialists generally do not participate in after hours trading, which can limit liquidity. Example chart of extended hours trading, via Google Finance Trading outside regular hours is not a new phenomenon but used to be limited to high - net - worth investors and institutional investors like mutual funds. The emergence of private trading systems, known as electronic communication networks ( ECNs ), has allowed individual investors to participate in after - hours trading. Financial Industry Regulatory Authority ( FINRA ) members who voluntarily enter quotations during the after - hours session are required to comply with all applicable limit order protection and display rules ( e.g., the Manning Rule and the U.S. Securities and Exchange Commission order handling rules ). See also List of market opening times List of stock exchanges References Jump up ^ Sulthan,. A ( 2017 ). Stock Market Dictionary ( 1 ed. ). Sulthan Academy. p. 229. ISBN 1522022864. Jump up ^ `` About Us : History ''. NYSE. Retrieved 2007 - 04 - 11. Jump up ^ `` Pre-Market Trading ''. Investors Underground. Retrieved 11 November 2016. ^ Jump up to : `` Nasdaq Trading Schedule ''. NASDAQ. Retrieved 2011 - 08 - 02. Jump up ^ `` After Hours Trading ''. Investors Underground. Retrieved 11 November 2016. Jump up ^ `` SEC.gov ''. United States Securities and Exchange Commission. Jump up ^ Barclay, Michael J. ( 2003 ). `` Price Discovery and Trading After Hours ''. University of California, Berkeley. External links `` Trade After - Hours ''. Invest FAQ. 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This economics - related article is a stub. You can help Wikipedia by expanding it. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Extended-hours_trading&oldid=809461471 '' Categories : Share trading Economics and finance stubs Hidden categories : Wikipedia articles incorporating text from public domain works of the United States Government All stub articles Talk About Wikipedia Italiano Edit links This page was last edited on 9 November 2017, at 07 : 08. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: when does after hours trading start and end
Answer: 4:00 p.m. to 8:00 p.m. ET