round lot

Round Lot

The normal unit of trading for a security, which is generally 100 shares of stock.

Notes:

Anything less than 100 shares is considered an odd lot.

See also: Board Lot, Bunching, Odd lot

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Round lot

A trading order typically of 100 shares of a stock or some multiple of 100. Related: odd lot.

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round lot

The standard unit of trading in a particular type of security. For stocks, a round lot is 100 shares or a multiple thereof, although a few inactive issues trade in units of 10 shares. For corporate, municipal, and government bonds, a round lot is usually considered to be $100,000 of principal amount of securities per trade. Customers involved in securities transactions in lots other than round lots are often penalized somewhat because the trades require more broker and dealer effort. Also called even lot, lot, normal trading unit. Compare odd lot.