Market Brief: RBI Tightens Capital Market Funding The Reserve Bank of India has introduced a comprehensive overhaul of lending norms for capital market intermediaries, effective **April 1, 2026**. This regulatory shift aims to fortify the banking system by mandating **100% secured funding** for stockbrokers, effectively ending the era of flexible, partially unsecured bank guarantees. Impact on Bourses and Intermediaries Market reaction was immediate following the **February 13** announcement. Shares of major exchanges and brokerages faced a sharp sell-off on **February 16, 2026**: * **BSE** shares plummeted **10%** to **Rs 2,726.30** * **MCX** dropped by **7%** * **Angel One** fell **6%** * **Groww** declined **4%** Analysts at Jefferies estimate that these norms could slash **BSE's** earnings by approximately **10%**, primarily due to an expected drop of **10–12%** in options turnover as trading costs surge. Stricter Collateral Requirements The new framework significantly increases the capital burden for market participants. Key changes to bank guarantees and margin funding include: * A minimum of **50% collateral** is now required for bank guarantees. * At least **25%** of that collateral must be maintained in **cash**. * Equity shares used as collateral will face a mandatory **40% haircut**. * Banks are now prohibited from funding **proprietary trading** activities. Shift in Market Liquidity Proprietary traders, who account for nearly **50%** of equity options premium turnover, are the most affected. Combined with the recent doubling of **Securities Transaction Tax (STT)** on derivatives, these participants face a high-cost environment that may lead to reduced volumes and wider bid-ask spreads. While retail-focused discount brokers like **Groww** are expected to see a limited direct impact due to self-funded margin books, they face a "second-order" risk. If proprietary desks scale back, the resulting drop in overall market liquidity could increase execution costs for all investors. Sector Outlook Brokers are now forced to pivot toward costlier funding avenues, such as **Commercial Paper** and **Non-Convertible Debentures**, as the bank channel becomes less viable for routine operations. Conversely, the RBI has slightly liberalized other areas, allowing banks to fund up to **75%** of corporate acquisitions for companies with a net worth exceeding **Rs 500 crore**, provided they maintain a debt-to-equity ratio within **3:1**. The transition period is tight, giving intermediaries only until the start of the new fiscal year to restructure their funding models. This move signals a clear regulatory preference for stability and systemic safety over high-leverage trading growth.