in·​tra·​day | \ ˈin-trə-ˌdā How to pronounce intraday (audio) , -(ˌ)trä-\

Definition of intraday

: occurring in the course of a single day the market showed wide intraday fluctuations

Examples of intraday in a Sentence

Recent Examples on the Web

Use intraday highs and lows and the index was down 21.6%, for a new bear market. James Mackintosh, WSJ, "Calling Bull on the Longest Bull Market," 22 Aug. 2018 That compares with an intraday gain of 1.3 percent in March 9, 2006, when North Korea launched two short-range missiles. Luzi-ann Javier,, "Gold Less Prone to Turmoil as ETF Cash Eases Price Swings," 8 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'intraday.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of intraday

1950, in the meaning defined above

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Last Updated

12 Sep 2019

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The first known use of intraday was in 1950

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Financial Definition of intraday

What It Is

Intraday is another way of saying "within a day" and is generally used to describe the high and low price of a stock or option during a given trading day or session.

How It Works

Let's assume that during the course of one normal trading day, shares of Stock A open at $5, peak during the day at $7, fall to $4.50 and close at $6 per share. The intraday high for Stock A is $7 and the intraday low is $4.50.

All of the major exchanges supply intraday price charts which enable traders to track price movements of stocks and options in real time. For most exchanges, intraday is between the hours of 9:30 AM EST and 4:00 PM EST.

Why It Matters

Intraday price movements and charts are used by short-term traders to determine the correct time to enter or exit a trade. Based upon this analysis, they implement trading strategies and capitalize on short-term price fluctuations.

Intraday strategies are also used to trade options. Option prices don’t change as quickly as underlying stock prices, so traders use intraday prices to identify periods when the option is mispriced relative to the stock.

Intraday is closely linked with day trading, the practice of buying and selling financial instruments within the same trading day. Many day traders are bankers or investment firm employees. However, since the advent of electronic trading, day trading has become increasingly popular with at-home traders.

Source: Investing Answers


in·​tra·​day | \ ˌin-trə-ˈdā How to pronounce intraday (audio) \

Legal Definition of intraday

: occurring in the course of a single day the intraday financing practices of Government securities dealersFederal Register

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to wander slowly or to speak indistinctly

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