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How to Select the Right Strike Price for NIFTY Options
Updated August 2026 · By PaperBull Editorial Team
Quick answer: Pick your strike based on Delta and how much time you have. High conviction with time to spare → ATM or slightly ITM. Moderate conviction → OTM with Delta 0.25-0.35. Anything cheaper than that is closer to a lottery ticket than a trade.
Jump to: ITM vs ATM vs OTM · Delta & strike selection · Timeframe · The OTM lottery trap · FAQ
One of the questions new options traders ask most: "Should I buy an ATM option or an OTM option?" The honest answer depends on a few factors most beginner guides skip over. Strike selection is one of the most important decisions in options trading — it shapes your probability of profit, your maximum loss, and how the option behaves as the market moves.
The Three Categories of Strikes
In The Money (ITM)
CE: Strike below current price
PE: Strike above current price
- Higher premium
- High Delta (0.6–0.9)
- Less Theta decay
- More responsive to price
At The Money (ATM)
Strike closest to current market price
- Maximum time value
- Delta ~0.5
- Highest absolute Theta
- Most actively traded
Out of The Money (OTM)
CE: Strike above current price
PE: Strike below current price
- Cheapest premium
- Low Delta (0.1–0.4)
- High % Theta decay
- Needs big move to profit
Delta: The Most Important Guide for Strike Selection
Delta tells you roughly how much the option premium moves for a 1-point move in NIFTY. An ATM NIFTY option has Delta around 0.5 — so a 100-point NIFTY move shifts the premium by about 50 points. For the full picture on Delta and the other Greeks, see Option Greeks Explained.
More practically, Delta doubles as an approximate probability the option expires in the money. Delta 0.5 means roughly a 50% chance of being profitable at expiry; Delta 0.2 means roughly 20%.
Strike selection based on your conviction:
- High conviction trade: buy ATM or slightly ITM. Higher probability of profit, higher capital required.
- Moderate conviction: buy OTM with Delta 0.25–0.35. Lower cost, decent probability if your view is right.
- Lottery ticket / very aggressive: deep OTM (Delta below 0.15). Very cheap, almost certainly expires worthless, but a large payoff if the move is big enough.
How Timeframe Affects Strike Choice
| Holding Period | Recommended Strike | Reasoning |
|---|---|---|
| Intraday (same day) | ATM or slightly OTM | Quick moves, premium is cheap intraday, no overnight Theta risk |
| 1–3 days | ATM or ITM | Theta decay is heavy; don't overpay for OTM that might not move enough |
| 3–7 days (weekly expiry) | 1 strike OTM to ATM | Balanced risk-reward for moderate expected moves |
| 2–4 weeks (next expiry) | ATM to 1-2 strikes OTM | More time gives OTM options a real chance to work |
| 1–3 months | OTM to ATM | More time reduces Theta impact; OTM can offer better returns if you're right |
The OTM Lottery Trap
Far-OTM options are tempting because they're cheap — say a NIFTY 25,500 CE for ₹5 when NIFTY is at 24,500. At the current NIFTY lot size of 65, that's just ₹325 at risk. If NIFTY somehow hits 25,500, that premium could be worth ₹1,000+ per share — a 200x return on a small stake.
The catch: NIFTY needs to move roughly 1,000 points (about 4%) before expiry for that to happen. It occurs occasionally, but it's a low-probability bet dressed up as a cheap trade. Most of the time these options expire at zero. Chasing this repeatedly is how a lot of retail traders slowly bleed capital — winning big rarely, losing small often.
A steadier approach with similar capital: 1 ATM option at ₹150 (₹9,750 per lot at the current 65 lot size) with Delta around 0.5 gives you a genuine shot at profiting from a normal-sized move, instead of needing an outsized one.
Test Different Strike Selections on PaperBull
PaperBull shows live Delta, Theta, and the other Greeks right in the option chain. Practise picking strikes for different scenarios and see exactly how each performs — with virtual capital.
Start Paper Trading Free →Frequently Asked Questions
Should beginners buy ATM or OTM options?
ATM, generally. It has a genuine ~50% probability of expiring in the money and the clearest relationship between the underlying's move and your P&L. OTM options are cheaper but need a bigger move, and most of the time they simply expire worthless.
What Delta should I look for when picking a strike?
For a high-conviction trade, ATM or slightly ITM (Delta 0.5-0.7). For a moderate view, OTM with Delta around 0.25-0.35. Anything below Delta 0.15 is closer to a lottery ticket than a trade — cheap, but very unlikely to pay off.
Does the 'OTM lottery ticket' trade ever work?
Occasionally, yes — that's what keeps people doing it. But most far-OTM options expire worthless, and the occasional big win rarely makes up for the steady bleed of small losses. It's a low-probability bet, not a strategy.
How does time to expiry change strike selection?
The less time you have, the closer to ATM/ITM you generally want to be — Theta decay is brutal on OTM strikes in the final days. With weeks to expiry, OTM strikes get more room to actually work in your favour.
What's a safe strike distance for intraday NIFTY options?
ATM or one strike OTM is the common choice for intraday — cheap enough to size reasonably, close enough that a normal intraday move actually moves the premium. Far OTM strikes rarely move enough intraday to matter.
Can I test strike selection without risking real money?
Yes — paper trade it. PaperBull shows live Delta and the full option chain, so you can try ATM vs OTM on the same move and see the actual difference in your P&L before ever using real capital.