How to Prepare for the Trading Day in Indian Markets

Why a Fixed Pre-Open Routine Beats Improvising

Most losing trading days are decided before 9:15 am, not during market hours. A trader who opens the chart at 9:14, sees a green candle and buys is reacting to noise. A trader who has already written down where they will buy, where they will exit and how much they are willing to lose is executing a plan. The difference between these two traders is almost entirely the one hour of preparation before the open.

The Indian market gives you a generous runway. The pre-open session runs from 9:00 am to 9:15 am, with order entry from 9:00 to 9:08, order matching and price discovery from 9:08 to 9:12, and a buffer until the normal session starts at 9:15 am. Before that, GIFT Nifty has been trading and the overnight US close is already known. This means by 9:00 am you can already estimate the gap and have your levels ready. The routine below turns that hour into a repeatable checklist instead of a scramble.

Treat preparation as a non-negotiable habit. The goal is not to predict the day perfectly. The goal is to walk into the open with defined risk, a short watchlist and clear invalidation points, so that when price moves you already know what you will do.

Your 60-Minute Pre-Open Checklist (8:15 am to 9:15 am IST)

Here is the exact sequence. Do these steps in order. Each one feeds the next, so by the time the market opens you are not gathering information, you are executing.

• 8:15 am: Check the GIFT Nifty level versus yesterday's Nifty futures close to estimate the gap up or gap down in points.
• 8:20 am: Scan the overnight US close (Dow, S&P 500, Nasdaq) and the morning Asian markets (Nikkei, Hang Seng) for direction.
• 8:30 am: Read the morning news. Check for RBI announcements, results of large-weight stocks (Reliance, HDFC Bank, TCS, Infosys), SEBI circulars, crude oil and USDINR moves.
• 8:45 am: Open the Nifty and Bank Nifty charts. Mark yesterday's high, low and close, today's pivot, and the nearest round-number strikes.
• 9:00 am: Watch the pre-open session. Note the indicative open and which heavyweight stocks are leading or dragging.
• 9:10 am: Write your plan in one or two lines. Bias, the level you will act on, your stop in points, and your maximum loss in rupees.
• 9:15 am: At the open, do nothing for the first few minutes. Let the opening volatility settle, then act only if price reaches your pre-marked level.

Step 1: Read GIFT Nifty to Estimate the Gap

GIFT Nifty is the offshore version of the Nifty 50 futures contract, traded on the NSE International Exchange (NSE IX) located in GIFT City, Gandhinagar. It took over from the old SGX Nifty in July 2023, when the contract was shifted from Singapore to India. It trades in two sessions covering nearly 21 hours a day, so it is live during your morning preparation and is the most reliable single signal for where Nifty will open.

To use it, compare the current GIFT Nifty level with the previous day's Nifty futures closing level. Suppose Nifty futures closed yesterday near 23,450 and GIFT Nifty is trading at 23,520 at 8:15 am. That is roughly a 70 point premium, suggesting a gap-up open of around 60 to 70 points. A gap-up changes everything about your plan: chasing a long into a gap-up open is how many traders buy the high of the day. Knowing the gap in advance lets you decide whether you want to fade it or wait for a pullback. These levels are illustrative.

Step 2: Mark Your Levels Before the Bell

Levels are the backbone of a trading plan. Without them you have no reference for whether price is cheap, expensive, breaking out or failing. The minimum set of levels to mark every morning is yesterday's high, yesterday's low, yesterday's close, the daily pivot, and the nearest psychological round numbers (for Nifty that means the levels ending in 00 such as 23,400 and 23,500).

The classic floor-trader pivot is simple to compute. Pivot equals (High plus Low plus Close) divided by 3. Using yesterday's Nifty high of 23,500, low of 23,380 and close of 23,450, the pivot is (23,500 plus 23,380 plus 23,450) divided by 3, which is 70,330 divided by 3, equal to about 23,443. Above the pivot the day leans bullish, below it leans bearish. The first resistance and support around it give you targets and invalidation points. Write these numbers on your chart so you are trading levels, not feelings.

A Fully Worked Pre-Open Routine for One Nifty Day

Let us walk through one realistic morning end to end. All numbers are illustrative and chosen to show the method, not to predict any real session.

8:15 am. Nifty futures closed yesterday at 23,450. GIFT Nifty is at 23,520, a 70 point premium, so a gap-up of roughly 60 to 70 points is likely. 8:20 am. The Dow and S&P 500 closed up about 0.6% overnight and the Nikkei is up 0.4% this morning, confirming a positive global tone. 8:30 am. No RBI event today, no large-cap results, crude is flat and USDINR is steady, so there is no single news catalyst to fear. 8:45 am. You mark the levels from the table above: pivot 23,443, yesterday's high 23,500, the round number 23,500 sitting just above the likely open.

9:10 am. The pre-open session prints an indicative open near 23,515, just below the 23,500 round-number resistance, wait, the open is at 23,515 which is just above 23,500, so the round number now acts as support. Your one-line plan reads: Bias mildly bullish above 23,500. Plan: if Nifty holds above 23,500 for the first 15 minutes, buy a slightly in-the-money call on a pullback toward 23,500. Stop if Nifty closes a 15-minute candle back below 23,470. Max loss for the day: Rs 3,000.

9:30 am. Nifty pulls back to 23,505 and holds. You buy one lot of the 23,500 call (CE). Nifty is the index, so one options lot is 65 units. Assume you pay a premium of Rs 120 per unit. Your cost is 120 times 65, which is Rs 7,800 as premium outlay. By 11:00 am Nifty has moved up to 23,580 and your call premium is now Rs 165. You exit. Your gross gain is (165 minus 120) times 65, which is 45 times 65, equal to Rs 2,925 before costs.

Now the costs, because they matter on a trade this size. STT on options is charged at 0.15% of the premium on the sell side, so 0.15% of (165 times 75 = Rs 12,375) is about Rs 18. Discount-broker brokerage is roughly Rs 20 per order, so Rs 40 for buy and sell combined. Exchange transaction charges, SEBI fees, stamp duty and 18% GST on (brokerage plus exchange charges) add up to roughly another Rs 30 to Rs 40. Total costs land near Rs 90 to Rs 100. Your net profit is approximately 3,375 minus 100, which is about Rs 3,275. The point of this example is the process: you knew your level, your stop and your maximum loss before the bell, and the costs were budgeted, not a surprise.

Position Sizing: Decide Your Rupee Risk First

The single biggest preparation step traders skip is deciding how much they can lose before they decide what to buy. Professionals work backwards from risk. If your capital is Rs 2,00,000 and you risk a maximum of 1% per trade, your stop-loss in rupees is Rs 2,000. Everything else, the strike, the number of lots, the stop in points, is derived from that single number.

On Nifty options, one lot is 65 units, so every 1 rupee of premium movement is Rs 65 per lot, and a 20 point premium move is Rs 1,300 per lot. On Bank Nifty, one lot is 30 units, on FinNifty it is 60 units, and on Sensex options it is 20 units. Because Bank Nifty premiums swing far more violently than Nifty, the same number of lots carries very different risk. Match the instrument and lot count to your rupee stop, never the other way round.

Know the Expiry Calendar Before You Trade

Expiry day behaviour is completely different from a normal day, so your preparation must include checking whether today is an expiry. As of 2025, index weekly options expiries were consolidated by SEBI so that each exchange has one weekly expiry day. Nifty weekly options expire on Tuesday and Sensex weekly options expire on Thursday on the current schedule. Always confirm the current expiry day on the NSE or BSE website, because the rules have changed more than once and exchanges adjust them.

On expiry day, theta (time decay) accelerates brutally. An at-the-money weekly option can lose most of its value within hours as expiry approaches, which is why buying options on expiry afternoon is a low-probability bet for most retail traders. Monthly contracts expire on the last weekly expiry day of the month. Knowing where you sit in the expiry cycle tells you whether time decay is your friend (if you are an option seller) or your enemy (if you are a buyer holding into the close).

• Confirm today's expiry status before the open. Expiry days behave very differently from regular days.
• On expiry day, time decay is fastest, so option buyers face a strong headwind in the afternoon.
• Avoid holding cheap out-of-the-money options into the last hour of expiry hoping for a lottery move.
• Monthly expiry coincides with the last weekly expiry of the month and often sees higher volume and volatility.

Budget for Costs and Taxes in Your Plan

Costs are part of preparation because they decide whether a strategy is even viable. For a scalper taking 20 trades a day, brokerage and STT can quietly turn a winning method into a losing one. Know your real costs per round trip: brokerage (often a flat Rs 15 to Rs 20 per executed order at discount brokers), STT (0.15% of premium on sold options, and 0.05% on the sell side of futures), exchange transaction charges, SEBI turnover fees, stamp duty on the buy side, and 18% GST charged on brokerage plus exchange charges.

Tax treatment also shapes your year. Profit from F&O trading is treated as business income in India and is taxed at your applicable slab rate, not at a flat capital gains rate. Short-term capital gains on equity delivery (held one year or less) are taxed at 20%, and long-term capital gains above Rs 1.25 lakh in a financial year are taxed at 12.5%. Because F&O is business income, you can set off trading losses and claim genuine business expenses, but you must keep clean records and may need a tax audit if turnover crosses the prescribed limits. This is general information, not tax advice. Confirm your position with a qualified chartered accountant.

Set Up Your Trading Environment and Mental State

Preparation is not only data. A stable internet connection, a charged backup (mobile hotspot), your broker app already logged in, and your watchlist loaded all remove friction at the worst possible moment, when price is moving and seconds count. Keep your order window, chart and option chain arranged so you are not hunting for buttons during a fast move. Test that your stop-loss order type actually works on your broker before you rely on it in a live trade.

Mental preparation matters just as much. Decide in advance how many losing trades will end your day. A common rule is to stop after two consecutive losses or after hitting your daily maximum loss in rupees. Revenge trading, doubling size to win back a loss, is the fastest way to turn a small bad day into a large one. Write your daily max loss at the top of your trading journal every morning and honour it without exception.

Journal the Plan, Then Review It After the Close

The loop is only complete when you write the plan down before the open and review it after the close. Before 9:15 am, log your bias, your levels, the trade you intend to take, your stop and your maximum loss. This single line forces clarity and gives you something to grade against later. A plan that lives only in your head is too easy to bend in the heat of the moment.

After the close, compare what you did with what you planned. Did you take the trade at your level or did you chase? Did you honour your stop? Did you respect your daily max loss? Over a few weeks, this review reveals your real edge and your real leaks far better than any indicator. A trading journal that records your pre-open plan and your actual execution is the highest-return preparation tool you have, because it turns each day into data you can learn from.

Common Pre-Open Mistakes to Avoid

• Trading the first minute blindly. The 9:15 am open is volatile and spreads are wide. Let the opening range form first.
• Ignoring the gap. Buying into a large gap-up without a plan often means buying the high of the day.
• Sizing by gut, not by rupee risk. Always work backwards from the maximum you can afford to lose.
• Forgetting it is expiry day. Time decay on expiry afternoon destroys option buyers who hold on hoping.
• Skipping costs. On small scalps, brokerage, STT and GST can quietly turn winners into losers.
• No written plan. If your bias, level, stop and max loss are not written before the bell, you will improvise and lose.

Sources and Further Reading

For authoritative data and current contract specifications, refer to Zerodha Varsity, NSE India and SEBI Investor Education. Expiry days, lot sizes, STT rates and tax slabs change from time to time, so always confirm the current rules on the official source before you trade. Pair this routine with a disciplined risk management habit and your own trading plan.

Sources and Further Reading

For authoritative data and further reading on this topic, refer to Zerodha Varsity, NSE India and SEBI Investor Education. Always confirm current rules, rates and contract specifications on the official source before you trade.