Zerodha AMO: After-Market Orders Explained

Zerodha AMO (After Market Order) lets you place buy or sell orders outside regular trading hours. For NSE and BSE equity, AMOs can be placed between 4:00 PM and 8:58 AM the next morning. Orders are queued by Zerodha overnight and sent to the exchange at 9:00 AM, where they execute in the pre-open session and the regular market open.

If you have a 9-to-6 job, the market is open exactly when you can't watch it. That's the problem AMO is built to solve — you place your order on your couch the previous night, and Zerodha handles the rest at 9 AM the next morning.

The mechanics are simple. The pitfalls are not. This article covers the timings, the order types you can and can't use, the sell-restriction trap that catches first-time AMO users, the difference between AMO and GTT, and the one habit you should not build with this feature.

What an AMO Actually Is

An After Market Order is not a special order type that the exchange knows about. The exchange — NSE or BSE — only accepts orders between 9:00 AM and 3:30 PM. Everything else is your broker's logic.

When you place an AMO on Kite at 11 PM, the order doesn't go anywhere. It sits on Zerodha's servers along with thousands of other AMOs from other Zerodha clients. There it waits until the market opens. At 9:00 AM the next trading day, Zerodha takes that overnight queue and fires every order into the exchange's pre-open session in one batch.

From the exchange's point of view, your AMO arrives at 9 AM. From your point of view, it was placed last night while you were watching Netflix. Both are correct. The trick is the holding tank in between.

This also means an AMO is technically not a new product type. You can place a CNC AMO (delivery), an MIS AMO (intraday), or an NRML AMO (overnight F&O). AMO is just a flag on the order saying "hold this and send it at 9 AM."

Zerodha AMO Timings for Every Segment

The window depends on the segment. Equity, F&O, currency, and commodity all have different rules — and they have changed over the years. Here are the current windows as documented on Zerodha's support portal.

What Happens at 9:00 AM

The most useful way to understand AMO is to follow a single order through its life. You placed a Buy AMO for 50 shares of Reliance at ₹1,290 last night at 10:43 PM. Here is what that order does between 4 PM yesterday and the bell at 9:15 AM.

• 4:00 PM · Yesterday

  The AMO window opens

  Equity AMO acceptance begins on Zerodha at 4 PM. The previous day's market closed at 3:30 PM. Between 3:30 and 4:00 PM, the broker is still settling and reconciling the trading day — you can't place AMOs during that 30-minute gap.

• 10:43 PM · Order placed

  Your order joins the queue

  You place the Buy AMO at ₹1,290. It is validated for margin, security availability, and order rules — and then parked on Zerodha's servers. You'll see it in the Orders tab marked as AMO PENDING. You can modify or cancel it anytime until the morning cut-off.

• 1:00 AM — 5:30 AM

  Scheduled maintenance

  Order placement, modification, and cancellation are all locked during this window. Your existing AMO sits where it is. You can't touch it. After 5:30 AM, everything resumes normally.

• 9:00 AM · Today

  Zerodha fires the batch into the exchange

  At exactly 9:00 AM, the pre-open session begins. Zerodha pushes every pending equity AMO — including yours — to the exchange. Your order is now a live, normal order in the NSE order book. The pre-open phase runs from 9:00 to 9:08 AM, during which all orders are collected.

• 9:08 AM · Match

  Equilibrium price discovery

  The exchange runs an auction over the collected orders and determines a single opening price for each stock. If Reliance opens at ₹1,287, your ₹1,290 limit Buy matches and fills at ₹1,287 — you got a better price than your limit. If it opens at ₹1,294, your order doesn't fill at the open and waits.

• 9:15 AM · Normal session

  Unfilled AMOs become regular orders

  Whatever didn't execute in pre-open is carried into the regular market as a normal pending limit order. It will fill any time during the day if your price is hit, and gets cancelled at 3:30 PM if it isn't. F&O and SL/SL-M AMOs join the book at this point, since they skip pre-open entirely.

The two execution points to remember: 9:00 AM for market and limit orders in equity, and 9:15 AM for F&O, SL, SL-M, IOC, and disclosed-quantity orders. Same AMO feature, different doors into the order book.

What You Can — And Can't — Place as an AMO

Most of the order types you use during the day are AMO-eligible. A few important ones are not. Here is the cleaned-up list.

The Sell AMO Restriction Most Beginners Hit

Here is the AMO trap that catches more first-time users than anything else.

If you bought a stock today (CNC) and try to place an AMO to sell it tonight, Zerodha rejects it. The rejection isn't because something is wrong with your order — it's because of how share-selling authorisation works in India.

For every CNC sell, you have to authorise the broker to debit shares from your demat account. This is done either through a one-time mandate called DDPI (Demat Debit and Pledge Instruction), or for every single sell, through a CDSL TPIN with an OTP. The TPIN system is only available after 5:00 PM for AMOs, and it only accepts authorisation for stocks that have actually been delivered to your demat account — which happens on T+1 morning.

The practical rules, if you have not submitted DDPI:

This is the single most common AMO frustration we see in our community. The order gets rejected with a vague error, the user assumes the feature is broken, and they give up. It's not broken — it's a regulatory mandate around how the depository handles share authorisation. DDPI fixes it permanently.

How to Place an AMO on Zerodha Kite

The Kite interface is the same on web and mobile. The AMO option appears as a tab in the order ticket whenever you're outside market hours.

1. Open the stock in your Kite watchlist and tap Buy or Sell.
2. In the order ticket, look for the Regular / AMO toggle near the top. Switch to AMO. (If you're placing the order between 3:30 and 4:00 PM, the AMO option won't appear — that's the equity reconciliation gap.)
3. Pick the product type: CNC (delivery), MIS (intraday), or NRML (overnight F&O / currency).
4. Pick the order type: Market or Limit. If you want a stop-loss, choose SL or SL-M (these fire at 9:15 AM, not 9:00 AM).
5. Enter quantity and price. For Limit AMOs, the price has to be within the broker's price band — usually within a percentage of the previous close.
6. Submit. The order will sit in your Orders tab marked AMO PENDING until 9:00 AM, when it changes to OPEN.
7. To modify or cancel: open the order from the Orders tab any time before the cut-off. Modifications keep the same order ID; cancellations free the blocked margin immediately.

One quirk worth knowing: if you place a regular Limit order during the market closed hours through Kite baskets or the trade-from-charts feature on TradingView / ChartIQ, Zerodha auto-converts it to an AMO. You don't have to click anything. The system reads the timestamp and flips the order type.

AMO vs GTT — Which One Do You Need?

This is the most asked question on the AMO topic, and the answer is genuinely "depends on what you're trying to do." Here are the two side by side.

Use an AMO when: you've decided exactly what to buy or sell at the next open, and you need to place the order before the market reopens.

Use a GTT when: you want to set a price-conditional order that may take days or weeks to trigger, and you don't want to keep replacing it every morning.

One is for a planned execution tomorrow. The other is for a conditional execution sometime in the future. Many beginners use AMOs for the second job, which doesn't fit — the AMO will get cancelled at 3:30 PM if your price doesn't hit, and you'll have to re-enter it every single evening.

When AMO Helps — And When It Hurts

The intended use of AMO is genuinely useful. You're a working professional. The market is open from 9:15 to 3:30. You can't sit in front of a screen. You decided over the weekend that you want to start a position in Larsen & Toubro on Monday. Sunday night, you place an AMO. Monday morning, it executes. You don't need to be at your desk.

The unintended use is where it gets dangerous.

At midnight, you scroll through Twitter. Someone tweets about a Fed announcement that's about to crash Indian markets. You panic. You place a Sell AMO on your entire portfolio. By 8 AM, the news turns out to be nothing. By 9:15 AM, the market opens flat, your AMOs have all triggered, and you've sold a six-month position into the spread.

Or the inverse: a stock you've been watching is up 8% in the US market after-hours. You're convinced it'll continue. You place an aggressive Market AMO. The Indian open is the gap, you fill at the worst price of the day, and the stock fades for the next four hours.

If you use AMO for the planned use case — "I've decided what to do tomorrow, let me queue it tonight" — it's one of the most useful features Zerodha offers a working professional. If you use it as a way to act on midnight impulses, it amplifies every bad habit a screen-restricted trader has.