The US regular session starts at 7:00 PM. Ends at 1:30 AM IST during daylight saving. For Indian investors that is the time they use to trade.. That is not the only time. US stocks can also be traded in the pre-market and after-hours sessions, which extend the trading day beyond the hours.
These sessions exist for a reason. Earnings are shared before. After the market opens. Economic data comes out when the market is closed. Global events happen any time of the day. The extended sessions allow the market to adjust prices to this information without waiting for the opening bell.
For investors the sessions also come with specific risks. The liquidity is lower the spreads are bigger. The price can change quickly.
what the extended sessions are
Pre-market trading takes place from 4:00 AM to 9:30 AM Eastern Time. In IST that is 1:30 PM to 7:00 PM during daylight saving (March to November) and 2:30 PM to 8:00 PM during time (November to March).
After-hours trading happens from 4:00 PM to 8:00 PM ET. In IST that is 1:30 AM to 5:30 AM during daylight saving and 2:30 AM to 6:30 AM during time.
The regular session happens in between from 7:00 PM to 1:30 AM IST during daylight saving.
why these sessions exist
The extended sessions have an use. Earnings, economic data and regulatory updates often happen outside market hours. Without the sessions the market would have to take in all this information at once which could lead to a big jump in prices.
The extended sessions allow the market to take in the news gradually. A company that announces news after the close can see its stock go up in after-hours trading. A company that announces news can see its stock drop. When the regular session starts the price has already changed.
For investors the sessions also offer a practical advantage. An investor who cannot stay up until 1:30 AM IST can trade during the -market session, which happens from 1:30 PM to 7:00 PM IST. The trade happens before the regular session begins.
the liquidity problem
The main issue with the sessions is liquidity. Fewer people are active outside the session.
During the session a large-cap stock like Apple trades millions of shares every hour. The spread between bid and ask is usually one to two cents. A market order for 100 shares fills quickly. At a price very close to the last trade.
In the pre-market or after-hours the volume drops. The spread increases. The order book becomes thinner. A market order for 100 shares can fill at a price that’s very different from the last trade. For liquid stocks the difference can be significant.
This is not an issue. It is the common problem retail investors face when trading outside normal hours.
the price volatility
The extended sessions can also be more volatile than the session. With volume a single large order can push the price. A news item can cause a move that would be absorbed more smoothly during regular hours.
An investor who places a market order during after-hours may see the trade fill at a price that’s very different from the quote on the screen. The difference can be bigger than any brokerage or forex cost.
A limit order can help here. It may not execute if the price moves too fast.
when extended hours make sense
Extended hours trading is useful in cases.
Reacting to news. If a company reports earnings after the close an investor who wants to respond can do so in after-hours trading. The price may have already changed,. The investor can still trade.
Entering a position before the session. An investor who wants to buy at the opening can place an order during pre-market. The trade happens before the regular session begins.
Exiting a position after a move. If a stock moves a lot after the close an investor can sell during after-hours to lock in the gain or limit the loss.
Investors in time zones. For investors the pre-market session runs from 1:30 PM to 7:00 PM IST. That is a time for anyone who does not want to trade at midnight.
when to avoid hours
For most retail investors extended hours are not a regular time to trade.
Selling a position. A large market order during hours can push the price against the seller. The regular session has liquidity.
Trading small-cap stocks. The spread on a small-cap stock outside hours can be very wide. The cost of execution may be too high.
Using market orders without a limit. A market order during hours can fill at a price far from the last trade. A limit order is safer.
Reacting to short-term news. The extended sessions often react to news that may not hold the morning. Selling in panic during after-hours may not be the decision.
the order type matters outside regular hours
The type of order becomes more important during the extended sessions.
A market order during pre-market or after-hours can fill at a price that’s very different from what was expected. The lack of liquidity means the order can affect the price.
A limit order sets the price. The trade will not go through if the price is worse. The downside is that the order may not execute if the price moves fast.
For retail investors trading outside regular hours a limit order is the safer choice.
what retail investors should take from this
The sessions give Indian investors more options. The pre-market session from 1:30 PM to 7:00 PM IST is a time to trade, especially for those who do not want to stay up until 1:30 AM.
The sessions come with real risks. The liquidity is lower the spreads are bigger. The prices are more volatile. A trade that looks like a deal on the screen can fill at a very different price.
For investors the regular session is the better choice. The extended sessions are a tool for situations, not a daily window.
Frequently Asked Questions
1. What are the US pre-market and after-hours sessions in IST?
Pre-market takes place from 1:30 PM to 7:00 PM IST during daylight saving and from 2:30 PM to 8:00 PM during time. After-hours takes place from 1:30 AM to 5:30 AM IST during daylight saving and from 2:30 AM to 6:30 AM during time.
2. Why is trading during hours more risky?
Liquidity is much lower. The spread between bid and ask is bigger volume is smaller. Prices can change more quickly on small trades. A market order during hours can fill at a price that is very different from the last trade.
3. Can I place a market order during hours?
Yes,. It is not a good idea. A market order during pre-market or after-hours can fill at a price that’s far from what was expected. A limit order is safer because it limits the price paid.
4. When should I use extended hours trading?
Extended hours are useful when reacting to news or earnings entering a position before the regular session opens or exiting a position after a move. For trading the regular session is better.
5. Do extended hours trading costs differ from hours?
The brokerage fee may be the same. The effective cost is higher because of wider spreads. The difference between the bid and the ask can be much larger outside hours and that difference is a cost, to the investor.
