End of Day Order means a trade order to buy or sell but closes at the end of the trading day. It is also known as an "EOD" order. This type of order is used when you want to ensure that your trade is executed, but don't want to be concerned with what happens during the rest of the day.For example, if you place an end of day buy order for 100 shares of Company ABC, your trade will be executed as long as there are still shares available at the end of the trading day. If there are not enough shares left by market close, then your order will not be filled and you will need to submit a new one for next trading day.