Expiry sessions concentrate opportunity and ruin in the same hours. A structural approach beats an emotional one.
Key takeaways
- Gamma risk peaks on expiry day, so position size should be at its smallest, not largest.
- Define the maximum rupee loss for the session before the open.
- Hedge the far wing instead of averaging into the losing leg.
Weekly expiry compresses a week of decay into a few hours, which is exactly why it attracts sellers — and exactly why it is the most dangerous session of the week. The same gamma that makes premium melt makes an adverse move accelerate.
The first structural rule is size. Whatever your normal unit is, expiry deserves less, not more. Traders routinely do the opposite because the probability of profit looks high.
The second is a pre-committed loss cap in rupees for the session, written before the open. Not a percentage, not a feeling — a number. When it is hit, the terminal closes.
The third is hedge, never average. Buying the far wing caps the tail at a known cost. Adding to the losing leg converts a bounded problem into an unbounded one, and it is the single most common cause of account-ending days in our data.
Traders who follow these three rules do not win every expiry. They simply remain in business long enough for their edge to show up.
Related guides
F&O
Nifty versus Bank Nifty: how the two indices actually behave
Composition, volatility, expiry behaviour and what each index demands from a trader's risk model.
F&O
Options for Indian traders: the fundamentals that actually matter
Strikes, premium, expiry, intrinsic and time value — the concepts that determine whether an option position makes sense.
F&O
Prop funding for options sellers: what to check first
Margin treatment, hedging requirements, expiry-day rules and event restrictions matter more than the profit target.
F&O
Option greeks without the maths: what delta, theta and vega do to your P&L
A practical translation of the greeks into rupees, aimed at traders who want to size positions correctly.
Your edge deserves
real capital
Start today from ₹1,499, trade Equity, F&O, Currency or MCX your way, and get paid in rupees on exactly the terms you were shown on day one.
Trade · Prove · Get Funded — evaluation fee refunded with your first INR payout.