when does after hours trading start and end
Extended-hours trading After-hours trading is known as the buying and selling of securities when the major markets are closed. [1] 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).[2] 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.[3][4] After-hours trading on a day with a normal session occurs from 4:00 p.m. to 8:00 p.m. ET.[4] Market makers and specialists generally do not participate in after hours trading, which can limit liquidity.[5]
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New York Stock Exchange The New York Stock Exchange (sometimes referred to as "the Big Board") provides a means for buyers and sellers to trade shares of stock in companies registered for public trading. The NYSE is open for trading Monday through Friday from 9:30 am – 4:00 pm ET, with the exception of holidays declared by the Exchange in advance.
Economics Theory and observation set out the conditions such that market prices of outputs and productive inputs select an allocation of factor inputs by comparative advantage, so that (relatively) low-cost inputs go to producing low-cost outputs. In the process, aggregate output may increase as a by-product or by design.[37] Such specialization of production creates opportunities for gains from trade whereby resource owners benefit from trade in the sale of one type of output for other, more highly valued goods. A measure of gains from trade is the increased income levels that trade may facilitate.[38]