05/10/2021
What Is a Board Lot?
A board lot is a standardized number of shares defined by a stock exchange as a trading unit. In most cases, this means 100 shares.A board lot is what the exchange determines to be a round lot. The purpose of a board lot is to minimize trading "odd lots" and to facilitate easier trading. It's more difficult for a broker to find a buyer for, say, 17 shares, if everybody agrees to trade in 100 share lots. With the advent of efficient online trading and fractional shares, however, odd lot trading is less of an issue than it has been in the past.