What is Weekly Expiry? A Simple Guide for Indian Traders
A weekly expiry is an options contract that expires every week instead of once a month. Indian exchanges offer weekly options on major indices, giving traders cheaper, shorter-dated contracts. They are popular for short-term trades but carry fast time decay.
Weekly expiry options have become some of the most traded contracts in India. They let traders take short, cheap positions on the market each week.
Their low cost is appealing, but their fast decay makes them risky. We will cover the idea, an example, and the practical takeaways. You can trade weekly index options on Stockk.
Key Takeaways
- A weekly expiry contract expires every week.
- Weekly options are cheaper than monthly ones.
- They carry very fast time decay.
- They suit short-term, event-driven trades.
- Rapid decay makes them risky for buyers.
Why are weekly expiries so popular?
Weekly options have lower premiums because they carry less time value. This suits traders who want low-cost, short-term exposure or who want to trade around a specific event that week. Weekly index options now account for a large share of daily derivatives turnover in India.
Suppose you expect NIFTY to move sharply this week around a major event. A weekly option lets you take that view at a low cost, since shorter-dated options cost less premium than monthly ones.
What are the risks of weekly options?
The short duration means time decay is rapid and unforgiving. An out-of-money weekly option can lose value within hours, and premiums swing violently near expiry. The very feature that makes them cheap also makes them high-risk for buyers.
Weekly vs monthly at a glance
| Feature | Weekly | Monthly |
|---|---|---|
| Expiry | Every week | Once a month |
| Premium | Lower | Higher |
| Time decay | Very fast | Slower |
| Well suited to | Short-term and event-driven trades | Positional views and hedging |
How fast does a weekly option decay?
The decay is not even across the week. It is slow at the start and brutal near the end. An out-of-money weekly option can hold value early in the week and then lose most of it in the last day or two.
| Day of the week | Time decay pressure |
|---|---|
| Start of the week | Mild |
| Mid-week | Rising |
| Day before expiry | Strong |
| Expiry day | Extreme |
Tips for trading weekly options
- Respect the fast decay; do not hold cheap out-of-money options hoping for a late move
- Use weekly options for clear, short-term views, not vague bets
- Keep position sizes small, since premiums can move violently near expiry
Ready to put this into practice? Stockk lets you trade futures and options, with Indira Securities as your SEBI-registered broker. A demat account is free to open, and the Knowledge Center has more guides like this one.
Futures and Options are leveraged products and carry a high risk of loss that can be more than the money you put in. This article is only for learning and is not a recommendation to trade in derivatives.
Frequently Asked Questions
How do weekly options differ from monthly ones?
Weekly options expire each week and carry less time value, so they are cheaper but decay faster. Monthly options last longer and cost more. The choice depends on your trade horizon.
Why are weekly options cheaper?
Shorter time to expiry means less time value in the premium, which lowers the upfront cost. But it also means faster decay that can erode value quickly.
Are weekly expiries good for beginners?
Their rapid time decay and volatility make them risky for newcomers, who often underestimate how fast premiums fade. Starting with monthly contracts is gentler.
Which instruments have weekly expiries in India?
Major indices have weekly option contracts, with availability set by the exchanges and revised from time to time. Stock options are usually monthly, so always confirm the current list.
Do weekly expiries increase trading volume?
Yes, weekly contracts have drawn large volumes due to their low cost and frequent opportunities.
Investments in securities market are subject to market risks. This article is for educational purposes only and does not constitute investment advice.
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