Do Not Increase (DNI) Instructions on a good-till-cancelled buy-limit or stop order that tell a broker not to increase the number of shares bought or sold in the event of a stock dividend or stock split. Investopedia Says: This is telling a broker not to increase the shares of your order when the number of shares you own increases. Related Terms: Do Not Reduce (DNI) Good Till Cancelled (GTC) Limit Order Stock Dividend Stock Split Stop Order |