On June 5, 2026, RBI Governor Sanjay Malhotra confirmed that stricter lending norms for proprietary trading would proceed from July 1, 2026. This announcement triggered immediate market reaction, with BSE Limited shares falling up to 5% and Multi Commodity Exchange of India declining 3.5-3.82%. The Nifty Capital Markets index closed 1.4% lower, reflecting sector-wide concerns about reduced liquidity and earnings pressure.
The RBI's amended Commercial Banks – Credit Facilities Directions, 2026, introduces three fundamental changes: 100% collateralization for all credit to capital market intermediaries (up from 50%), a minimum 40% haircut on equity collateral (previously 0-20% at bank discretion), and a complete prohibition on bank lending for proprietary trading activities. Bank guarantees now require 50% collateral with minimum 25% cash backing, compared to just 1-2% cash cost previously.
Proprietary trading desks account for roughly 50% of equity options turnover by value, with high-frequency trading firms constituting half of this activity.
Industry estimates suggest derivative trading volumes could decline by up to 20% as these firms face significantly higher capital costs. For BSE, which earns revenue primarily from transaction fees, this translates directly to earnings pressure. Analysts estimate up to 10% potential earnings pressure on exchanges. Options trading represents a major revenue contributor for BSE, and reduced proprietary activity may lead to lower F&O turnover.
The causal mechanism behind BSE's 5% decline on June 5 is straightforward: the Governor's statement dashed market expectations of another extension or relaxation, forcing investors to reassess earnings visibility under the new regime. BSE emerged as one of the biggest losers because its earnings are more directly dependent on trading volumes compared to diversified financial services peers.
Proprietary traders and HFT firms function as de facto market makers, continuously providing buy and sell quotes and absorbing order flow. The reduction in their activity creates several risks. The Association of NSE Members of India (ANMI) has explicitly flagged concerns that raising collateral requirements from 50% to 100% may restrict banking finance access, potentially widening bid-ask spreads and increasing transaction costs for investors.
ANMI cited South Korea's 2011 changes in the KOSPI 200 options market, where higher trading costs and deposit requirements reportedly led to a decline in liquidity.
Foreign Portfolio Investors, who rely on tight spreads for efficient execution, may find India less attractive for global allocations.
Angel One Limited faces significant margin compression pressure. With an MTF book of approximately ₹6,100 crore—where around 50% was previously sourced from banks—the company must shift to higher-cost NBFC or capital market funding. This transition could add ₹122-244 crore in annual interest costs, compressing net profit margins from the current 21.8% to approximately 18-20%.
The transition from 50% to 100% collateral requirements creates capital inefficiency. Cash previously used for business expansion must now remain locked with banks. For a firm maintaining ₹1,200 crore in bank guarantees, the cash requirement jumps from ₹12-24 crore to ₹300 crore minimum. This represents an additional ₹276-288 crore in locked capital, which at 15% ROE translates to ₹41-43 crore in foregone annual returns.
End-traders can expect 21-47% higher borrowing costs and 30-40% reduction in leverage. Angel One currently charges 14.99% per annum on MTF borrowing; this could rise to 18-22% post-implementation. A client borrowing ₹10 lakh for 30 days would see interest costs increase from ₹12,330 to ₹15,000-18,150.
The closure of the loophole allowing short-term working capital loans to be diverted for trading represents a structural disruption. Industry estimates suggest profit margins for proprietary trading firms could be compressed by up to 50%. Smaller firms lacking large balance sheets or alternate credit access face business models rendered obsolete, with 30-40% potentially exiting the market.
The leverage transformation is dramatic.
This represents a 92-96% reduction in capital efficiency.
For a typical mid-sized proprietary trading firm with a ₹100 crore trading book, capital requirements increase from ₹1-2 crore to ₹25-50 crore—a 1,150-2,400% jump. Annual cost of funds rises from ₹0.8-2 crore to ₹3.5-9 crore, compressing net profit margins from 86-93% to 40-77%.
Market participants are pursuing several adaptation strategies. Brokers are restructuring funding mixes, reducing bank funding from 60-70% to 0-10% while increasing NBFC funding from 10-20% to 40-50%. Business model diversification is accelerating, with brokers expanding distribution income, wealth management, and fee-based services to reduce dependence on MTF interest income.
Proprietary trading firms are optimizing capital structures, increasing internal equity from 20-30% to 40-50%, and exploring private equity and strategic partnerships. Trading strategies are being adjusted for lower leverage, with high-frequency trading shifting from 50:1-100:1 leverage to 2:1-4:1.
Offshore migration presents another option. Singapore's GIFT Connect—a cross-border trading arrangement with NSE International Exchange—offers leverage of 10:1-20:1 compared to India's 2:1-4:1. Large global firms and HFT specialists have high migration probability (70-90%), with migration timelines of 3-12 months. However, setup costs of ₹5-10 crore and 18-36 month payback periods present barriers.
The RBI's policy aligns with broader regulatory measures including increased Securities Transaction Tax (STT) on futures (raised to 0.05% from 0.02%) and options (raised to 0.15% from 0.10%) in Union Budget 2026. This represents a coordinated multi-regulator approach to curb excessive speculation and reduce systemic risk.
Previous regulatory efforts proceeded incrementally. SEBI increased trading fees, reduced available derivative contracts, and the Finance Ministry raised STT. While these measures succeeded in reducing the number of contracts traded, they failed to reduce total capital deployed. Sophisticated participants adapted by concentrating on higher-notional, higher-margin strategies. The 2026 comprehensive approach addresses this gap by combining leverage restrictions with cost increases.
The framework finds clear precedents in post-2008 financial crisis reforms. The US Volcker Rule prohibits proprietary trading by deposit-taking institutions. The UK's ring-fencing regime structurally separates core retail banking from investment banking. India's measures are narrower in scope but follow identical logic—insulating the banking system from capital market volatility.
The transition will unfold in phases. Immediate impact (July-September 2026) includes 10-15% decline in trading volumes, 25-50% increase in margin requirements, and 300-700 bps increase in funding costs. Medium-term adjustment (October 2026-March 2027) will see market consolidation through M&A activity, business model shifts from proprietary to agency trading, and volume stabilization at new equilibrium.
Long-term equilibrium (FY28 onwards) should feature a more concentrated market structure dominated by well-capitalized firms, lower but sustainable liquidity levels, compressed but stable profit margins, and innovation focus on operational efficiency rather than leverage.
India's global options hub status faces risk.
However, the long-term outcome should be a more stable and resilient capital market ecosystem with reduced systemic risk.
The firms that will thrive are those with strong balance sheets and access to alternative funding, superior technology and risk management capabilities, diversified business models beyond pure proprietary trading, and efficient capital allocation strategies optimized for the new regime. While the transition will be painful, particularly for smaller and mid-sized firms, the coordinated regulatory approach addresses structural vulnerabilities that previous fragmented measures failed to resolve.
