New Auction-Based Closing System Faces First Monthly Expiry Test
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Indian traders face the first monthly derivatives expiry under the new auction-based closing system, with single-stock options adding settlement risks amid thin auction volumes and regulatory scrutiny.
Indian traders face their first monthly derivatives expiry under the new auction-based closing price system on Tuesday, putting the mechanism through its biggest test since its launch on 3 August.
The monthly expiry will cover a wider set of derivatives positions than the weekly expiries held so far. It will also include physically settled single-stock options, where the auction-generated closing prices will determine the final value of contracts.
The system aims to bring India closer to the closing-price process used in major global markets. Its early weeks, however, have been marked by sharp price moves, lower auction volumes and concerns over possible manipulation.
Traders Face Higher Expiry Risk
Single-stock options could add to the risks during Tuesday's expiry. A sharp move in a stock during the closing auction can change an option that is due to expire worthless into one that is in the money. Since these contracts are physically settled, traders may then have to deliver shares or provide funds to meet their obligations.
The Securities and Exchange Board of India (SEBI) has previously flagged this risk. The regulator has extended derivatives trading beyond the auction session. This gives traders additional time to adjust their positions after the closing price becomes clearer and they understand their delivery obligations.
The monthly expiry therefore offers a broader test of how traders manage positions under the new closing-price mechanism.
Auction Volumes Remain Thin
The new system has operated through regular trading sessions and a weekly expiry since 3 August. Its adoption has been uneven. Several proprietary trading firms and high-frequency traders have stayed away from the auction, resulting in thinner volumes during the closing window.
Arbitrageurs have also lost some trading opportunities. The time available to trade stocks and their related derivatives at the same time during the final part of the session has narrowed under the new system.
The changes have affected a segment of traders that previously relied on late-session price differences between the cash and derivatives markets.
SEBI Action Adds To Scrutiny
The closing mechanism has also come under regulatory scrutiny. Last week, SEBI barred two firms from the market over alleged manipulation of prices during the auction. One of the entities was a unit of JPMorgan Chase & Co.
The action comes as traders prepare for the first monthly expiry under the new process. Unlike the weekly expiries conducted since the system was introduced, Tuesday's expiry will involve a larger range of derivatives positions. The inclusion of physically settled single-stock options means that movements in individual shares during the auction can directly affect delivery requirements.
The extended derivatives trading window gives investors more time to respond after auction-based closing prices emerge, while the monthly expiry will provide a wider test of the mechanism's impact on trading and settlement.
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This article is for informational purposes only and should not be considered investment advice from Kotak Neo. For compliance T&C and disclaimers, Visit www.kotakneo.com/disclaimer
Vishwa has spent 10+ years across fintech and FMCG doing what most people miss, connecting the dots, catching trends before they trend, and finding the angle nobody else thought to ask about.
At Kotak Neo, she drives content strategy for neoshorts, Kotak News Desk, and Investing Guide, turning market noise into something worth reading.
When she's not decoding markets, she trades charts for canvases, chasing art, painting, and architecture across cities she's yet to explore.
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