Weekly vs Monthly Contracts: Which Should You Trade?

Weekly contracts expire every week and exist only on index options, while monthly contracts expire once a month and cover both index and stock derivatives. Weekly options cost less but lose time value very quickly, so they suit short-term trades rather than positional views.

The choice between a weekly and a monthly contract is not only about cost. It also decides which instruments are available to you and how fast your premium erodes.

This comparison covers what trades where, when each expires, and how the decay difference plays out in practice.

Key Takeaways

• Weekly expiry is available only on index options.
• Stock futures and stock options are monthly only.
• Weekly options are cheaper but decay far faster.
• Monthly contracts suit views that need weeks.
• Expiry days are set by the exchange and change from time to time.

Which instruments have weekly expiry?

This is the first thing to check, because the choice may not exist. Weekly contracts are offered on index options only, and SEBI has narrowed this to a single benchmark index per exchange. Everything in the stock derivatives segment, both futures and options, trades on the monthly cycle alone.

When do they expire?

Under the current schedule, weekly index options expire on Tuesday each week, and monthly contracts expire on the last Tuesday of the month. If that day is a trading holiday, expiry moves to the previous trading session.

Expiry days have been revised more than once in recent years, and exchanges continue to adjust them. Confirm the current schedule on the exchange website before planning a trade around a specific date.

How the cost and decay compare

A weekly option has only days of time value in it, so it is cheaper to buy. That same short life means the remaining value drains quickly, and the drain accelerates in the final sessions. A monthly option costs more upfront but loses value gently until its own last weeks.

Choosing between them

Match the contract to how long your view needs. An event landing this week fits a weekly option, where the low cost is an advantage and decay has little time to bite. A view that needs a month to develop belongs in a monthly contract, because a weekly option can expire worthless while the view is still perfectly valid.

Buyers feel this difference most sharply. A weekly option can lose the bulk of its value in a session or two near expiry even when the underlying barely moves, which is why many beginners start with monthly contracts.

When you are ready to trade futures and options, Stockk has you covered. Create a demat account in minutes and lean on the Knowledge Center as you build confidence.

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.

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