Indian capital markets experienced a notable dip as Securities and Exchange Board of India (SEBI) weighed regulatory changes to control excessive speculation in the derivatives segment. Stocks like BSE, Angel One, and CDSL witnessed a decline following the possibility of curbs on weekly options expiries and higher transaction costs on short-term trading.
The Securities and Exchange Board of India (SEBI), headquartered in Mumbai, Maharashtra, is India’s primary capital markets regulator. It oversees and regulates the securities market to protect investor interests and ensure market transparency and stability.
On August 5, key stocks within India’s capital markets segment reacted negatively to growing anticipation that SEBI may propose significant restrictions on weekly options expiries to reduce speculative activity. The developments follow internal regulatory reviews aimed at enhancing the quality and balance of India’s derivatives ecosystem.
Among the affected counters, shares of BSE Ltd recorded the steepest decline, falling by nearly 3% to ₹2,411. Stocks of Angel One Ltd, a prominent digital brokerage firm, slipped by 0.5% to ₹919.55, while Central Depository Services (India) Ltd (CDSL) and Motilal Oswal Financial Services saw close to 1% intraday dips.
Proposed changes reportedly under consideration include shifting from weekly to monthly or bi-monthly expiries, raising margin requirements for options trading, and lowering them for cash transactions. Additionally, SEBI may explore altering the Securities Transaction Tax (STT) structure to reduce speculative volumes in the F&O segment and simultaneously promote delivery-based investing. However, any decision on STT changes is expected only in the next Union Budget.
In its recent regulatory discussions, SEBI acknowledged the significant imbalance between derivatives and cash markets—highlighting that on expiry days, the notional turnover in index options often surpasses cash market volumes by over 350 times. This disparity, the regulator suggests, may distort price discovery and overall market health.
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Internally, SEBI has also noted a sharp rise in short-tenure derivatives trading, which contributes disproportionately to market volatility. A review of FY25 trading patterns shows that the total net loss of individual traders widened 41% year-on-year to ₹1.05 lakh crore, even as the participation pool increased from FY23 levels.
The regulator’s internal study indicates that despite newer safeguard measures, 91% of F&O participants continued to report net losses, suggesting the need for further structural reform in investor onboarding, risk limits, and product design.
To address these challenges, SEBI is expected to initiate a stakeholder consultation process by releasing a discussion paper. This paper will outline potential approaches to minimize speculative risk while ensuring robust market participation. Following stakeholder feedback, final proposals will be presented to SEBI’s board for approval.
If implemented, the changes could significantly impact business volumes for brokerage houses and exchanges, especially those reliant on high-frequency derivatives trading. While volatility and speculative spikes may reduce, a potential decline in option volumes may lead to short-term revenue compression for capital market intermediaries.
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