After Market Order (AMO): Full Form, Meaning, Timing and Execution

An after market order allows an investor or trader to submit an order outside regular market hours. The broker queues the instruction and sends it to the exchange during the next eligible order-entry window.

An AMO can be convenient for someone who cannot access the market during regular hours. It does not reserve a price or guarantee that the order will be executed after the market opens.

What is an after market order in the share market?

For readers asking what is an after market order, it is an instruction to buy or sell an eligible security outside the regular trading session. The order is placed through a broker’s platform and stored until the next eligible exchange session.

An AMO does not execute while the market is closed. Once submitted to the exchange, it becomes subject to the same price, margin, liquidity, and order-matching conditions as other exchange orders.

AMO is a broker-provided facility rather than a separate exchange session. Its timings, supported securities, and available order instructions can therefore vary between trading platforms.

MO timings in the stock market

There is no single AMO placement window applicable to every broker. Each broker sets its timings according to its operating process, maintenance schedule, exchange segment, and supported securities.

For NSE equity trading, the regular pre-open session begins at 9:00 AM and closes at 9:08 AM. The normal market operates from 9:15 AM to 3:30 PM. Depending on the security, order type and broker process, an eligible AMO may be sent during the pre-open session or when normal trading begins.

AMO windows for equities, derivatives, currencies, and commodities can differ. Brokers may also temporarily suspend order placement, modification, or cancellation during overnight maintenance.

Investors should refer to the current timing displayed on their broker’s official platform rather than relying on a general market-wide schedule.

Source: NSE market timings.

How does an after market order work?

The process generally involves five stages:

Order submission

The investor selects an eligible security, transaction type, quantity, and price instruction during the broker’s permitted AMO window.

Broker validation

The broker checks whether the security, segment and selected order type are eligible. Preliminary checks may also cover available funds, margin, holdings, and permitted price ranges.

Order queuing

The broker stores the instruction until the next eligible exchange order-entry period. At this stage, the order has not reached the exchange and no trade has occurred.

Exchange submission

The broker forwards the order according to its operating process. This may happen during the pre-open session or after normal trading begins.

Matching and confirmation

The exchange attempts to match the instruction with a compatible counter-order. The AMO may be fully executed, partly executed, remain pending, be cancelled or be rejected.

Types of after market orders

Available AMO instructions depend on the broker and segment. The two most common forms are:

Market AMO

A market AMO seeks execution at the best available price when the order reaches the exchange. It prioritises execution but provides no control over the final price.

If the security opens significantly above or below its previous closing price, the trade may occur at an unexpected level. Some brokers restrict market AMOs for illiquid securities or particular contracts.

Limit AMO

A limit AMO specifies the highest price an investor is prepared to pay or the lowest price at which the investor is willing to sell.

The instruction provides price control, but execution is not assured. If the market does not reach the specified price, the order may remain pending until it expires or is cancelled.

Specialised AMO instructions

Support for stop-loss, bracket, cover, iceberg, and other specialised orders varies among brokers. Certain instructions may not be accepted as AMOs or may be released only after normal trading begins.

The broker’s current order rules should be checked before selecting a specialised instruction.

AMO vs other order facilities

These facilities differ mainly in when the instruction is placed, sent to the exchange, and considered for execution:

Order facility	Placement	Exchange submission	Execution
After Market Order	During the broker’s permitted after-hours window	During the next eligible market session	Depends on price, liquidity and matching
Regular order	During market hours	Generally submitted during the live session	Depends on order type and available counter-orders
Pre-open order	During the exchange’s pre-open period	Entered during the pre-open session	May execute at the discovered equilibrium price
GTT instruction	Set in advance through a broker offering the facility	Sent as an order after the trigger condition is met	Triggering does not assure execution

An AMO describes when an instruction is submitted to the broker. Market and limit orders describe how the instruction should be executed. An AMO can therefore be either a market order or a limit order where the broker supports it.

Benefits of using an AMO

The practical features of an AMO can provide the following benefits:

After-hours convenience

Investors who cannot monitor the market during regular trading hours can prepare and submit an order later.

Time to review disclosures

Financial results, exchange filings and other developments released after market hours can be reviewed before an instruction is submitted.

Advance price planning

A limit price and quantity can be considered without the pressure of a moving live-market price.

Weekend and holiday access

Some brokers accept AMOs on weekends and market holidays, subject to maintenance schedules. These instructions are queued for the next eligible trading session.

The benefit is convenience, not price priority or assured execution.

Risks of using AMO

The time between submitting an AMO and its exchange execution introduces several risks:

Overnight price gaps

Company announcements, global-market movements and economic developments can cause a security to open far from its previous closing price.

Market-order price uncertainty

A market AMO may execute at a price materially different from the previous closing price, particularly when the opening market is volatile or liquidity is limited.

Non-execution of limit orders

A limit AMO executes only at the specified price or a more favourable price. It can remain unexecuted if the market does not reach that level.

Limited opening liquidity

Some securities have wider bid-ask spreads or limited trading activity near the opening, affecting both price and quantity.

Changed information

New information may emerge after the AMO is placed. If the broker’s modification window has closed, the instruction may already be awaiting submission to the exchange.

Operational delays

Broker maintenance, connectivity issues or exchange restrictions can prevent an order from being submitted as expected.

Why AMO orders may get rejected

Common rejection reasons include:

Insufficient funds or margin

The trading account may not have the required available funds or margin when the broker processes the order.

Insufficient or unauthorised holdings

A sell order may fail if the necessary securities are unavailable or the required depository authorisation has not been completed.

Price outside the permitted range

The limit price may fall outside the range permitted by the exchange or broker.

Ineligible security or segment

The broker may not support AMOs for a particular security, contract, product or market segment.

Incorrect quantity

The quantity may not comply with the applicable lot size, freeze quantity or other exchange conditions.

Trading restrictions

A security may be subject to surveillance, a call auction, a derivative ban or another trading restriction.

Expired contract

An instruction involving an expired or unavailable derivative contract will not be accepted.

Maintenance window

The platform may temporarily stop accepting, modifying or cancelling AMOs during system maintenance.

How to use an AMO carefully

Before placing an AMO:

• Review company announcements and other material developments.
• Check the security’s liquidity and usual bid-ask spread.
• Consider a limit order if controlling the purchase or sale price is the priority.
• Confirm that sufficient funds, margin or securities are available.
• Verify that the instrument and order type are eligible for AMO placement.
• Check the broker’s placement, modification and cancellation timings.
• Do not rely only on the previous closing price because the next session may open at a different level.
• Review the order status after the market opens.

If the reason for placing the order or the underlying information changes, modify or cancel the AMO before the broker’s deadline.

Example of an after market order

Roshan, an architect from Pune, reviews a company’s exchange disclosure after the equity market closes. The share ended the session at ₹500, but he does not want to pay more than ₹510.

Roshan places a limit AMO to purchase 20 shares at ₹510. His broker queues the instruction and sends it to the exchange during the next eligible session.

• If sellers are available at ₹510 or below, the order may be executed fully or partly.
• If the share opens above ₹510 and does not fall to that price, the order remains unexecuted.
• If Roshan had placed a market AMO, the trade could have occurred at the best available price, including a price above ₹510.

Placing the order after reviewing the disclosure does not mean Roshan knows how the market will respond. The limit price only defines the maximum price he is willing to pay.

The figures shown are for illustrative purpose only

Who may use an AMO?

An AMO may be useful for investors who cannot access the market during regular trading hours, review portfolios after work or want to prepare an order for the next session.

It may be less suitable when the investor needs to observe live price movement, market depth and liquidity before deciding. Intraday users should also check whether their broker supports the required product and how opening volatility could affect the position.

Conclusion

An after market order enables an investor to submit an instruction outside regular trading hours. The broker queues it and sends it to the exchange during the next eligible session.

Submission does not guarantee execution or a particular price. Overnight gaps, limited liquidity, insufficient funds and broker restrictions can affect the outcome. Investors should select the order instruction carefully, review broker-specific rules and confirm the order status after the market opens.

FAQs

What is the full form of AMO?

The AMO full form is After Market Order. It refers to an order submitted to a broker outside normal market hours and queued for the next eligible exchange session.

What time can I place an AMO in India?

AMO placement timings vary by broker and market segment. The latest window, including any maintenance period, should be checked on the broker’s official platform.

When does an AMO get executed?

An AMO becomes eligible for execution after the broker submits it to the exchange during the next permitted session. This may happen during the pre-open session or when normal trading begins, depending on the security and broker process.

Does an AMO execute at the exact price entered?

A limit AMO can execute at the specified price or a more favourable price, but execution is not assured. A market AMO executes at the best available price, which may differ from the price visible when it was submitted.

Can I place an AMO at market price?

Some brokers permit market AMOs for eligible securities, while others restrict them for certain instruments. Market AMOs carry opening-price risk because the execution price is not fixed.

Can I cancel or modify an AMO?

An AMO can generally be modified or cancelled while it remains queued and the broker’s modification window is open. Once submitted to the exchange, the applicable broker and exchange rules determine whether changes remain possible.

What happens if an AMO is not executed?

An unexecuted day-valid AMO generally expires at the end of the applicable trading session. Its precise treatment depends on the order validity and broker rules.

Can I buy shares after 3:30 PM in India?

You may submit an AMO after the equity market closes if your broker provides the facility. The trade will not execute while the market is closed and becomes eligible for execution during the next session.

Is an AMO the same as a pre-open order?

No. An AMO is submitted during a broker’s after-hours window, while a pre-open order is entered during the exchange’s designated pre-open session. A broker may forward an eligible AMO into the pre-open session.

What is the difference between an AMO and a GTT instruction?

An AMO is generally queued for the next eligible session. A GTT instruction remains with the broker until its trigger condition is met or it expires under the broker’s terms.

Is an AMO suitable for intraday trading?

Broker support for intraday AMOs varies. Where permitted, opening-price gaps and volatility can make the entry price uncertain, so the order should be monitored after the market opens.

Are there additional charges for placing an AMO?

A separate AMO fee may not apply, but brokerage and normal transaction charges can apply when the order executes. Charges should be checked in the broker’s latest tariff.

Which exchanges allow AMO orders?

An AMO is a broker-side facility rather than a separate exchange order type. Brokers may offer it for securities and contracts traded on NSE, BSE or other supported exchanges, subject to their platform rules.

What does “AMO request received” mean?

“AMO request received” generally means the broker has accepted and queued the instruction. It does not confirm that the exchange has accepted the order or that a trade has been executed.