Upstox first validates after-market orders and then sends them to the Exchange for execution. Order placement depends on the margin availability in your Upstox account.

1. At the time of placing the order.

When you place an AMO, the system checks if you have sufficient margin in your account.

• If sufficient margin is available, the order is accepted and kept pending until the market opens.
• If not, you’ll need to add funds before placing the order.

2. Before triggering the order to the exchange.

When the market opens, the system rechecks your margin before sending the order to the exchange.

• In case of market orders, the required margin is calculated using the Last Traded Price (LTP). If LTP is unavailable, the previous day’s closing price is considered.
• The order is sent to the exchange only if sufficient margin is available; otherwise, it is rejected.

Please note - The order execution happens at the exchange level without any broker’s intervention.

Related articles:

• What is an After-Market Order (AMO), and how to place an AMO on Upstox?