After Hours Trading

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After Hours Trading

The practice of trading a security after an exchange has closed. After-hours trading occurs over-the-counter, but both listed and unlisted securities may be traded. After-hours trading is often less liquid than regular trading because participation by market makers is voluntary, whereas market makers are required to serve as a counterparty for a security during trading hours. The price of a security in after-hours trading may influence is price on the next trading day. The practice is less commonly called extended-hours trading.
References in periodicals archive ?
Actually, that was even higher than where the stock was quoted in after-hours dealing Friday night, after the federal court released its findings.
But IBM soared in after-hours dealings, gaining more than $17 to trade at $189.