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definitions

odd lot

noun

a quantity or amount less than the conventional unit of trading.
Stock Exchange. (in a transaction) a quantity of stock less than the established 100-share unit for active issues or the 10-share unit for designated inactive issues.

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Compare round lot.

Origin of odd lot

First recorded in 1895–1900
Also called broken lot.
Related formsodd-lot, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for broken lot

odd lot

noun

a batch of merchandise that contains less than or more than the usual number of units
stock exchange a number of securities less than the standard trading unit of 100
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012