The Securities and Exchange Board of India (SEBI) has issued a new circular tightening the stress-testing framework for small-cap and mid-cap mutual fund schemes. Effective from April 1, 2026, all Asset Management Companies (AMCs) must publish monthly stress-test results showing estimated portfolio liquidation timelines under both normal and stressed market conditions, along with impact cost data for their top 20 holdings.
What the New Rules Require
Under the revised framework, AMCs must disclose how many days it would take to liquidate 25 percent and 50 percent of a small-cap or mid-cap scheme's portfolio, assuming daily trading volumes at their 30-day and 90-day averages. Previously, stress testing was an internal risk-management exercise; SEBI is now making the results public and standardised so that investors can compare liquidity risk across schemes.
Additionally, fund houses must report the impact cost of selling their holdings. Impact cost measures the price slippage that would occur when a large order is placed. For a small-cap stock with thin trading volumes, impact cost can be substantial. SEBI expects this disclosure to highlight concentration risk in schemes that hold oversized positions in illiquid counters.
Why SEBI Acted Now
The regulator's move comes after small-cap mutual fund AUM surged from Rs 1.5 lakh crore in March 2024 to roughly Rs 3.2 lakh crore by February 2026. This rapid growth raised concerns that a sudden wave of redemptions could force fund managers to sell illiquid holdings at steep discounts, harming remaining unit holders. SEBI's earlier round of stress-testing guidelines in March 2024 had mixed implementation, with some AMCs providing only superficial disclosures. The new circular mandates a standardised template and third-party verification of the methodology.
SEBI Chairperson's recent statement at the FICCI capital markets conference underscored the regulatory intent: the focus is not to discourage small-cap investing but to ensure that investors enter these schemes with realistic expectations about liquidity constraints.
Impact on the Small-Cap Category
The immediate market response has been measured. Several AMCs, including Nippon India, SBI, and HDFC, have proactively restricted fresh lump-sum investments in their small-cap funds above Rs 2 lakh per PAN per day. Others have gated SIP top-ups. These restrictions, while inconvenient for investors seeking to deploy fresh capital, are prudent risk-management steps that protect existing investors from dilution in an overheated segment.
Fund managers at leading AMCs have noted that the stress-testing norms will naturally incentivise them to maintain higher cash and large-cap buffers in small-cap schemes, which could marginally reduce returns during bull phases but significantly improve resilience during downturns. Early estimates suggest that the average small-cap fund may need to hold 8 to 12 percent in large-cap stocks or cash equivalents to meet comfortable liquidation timelines.
What Investors Should Consider
If you hold small-cap mutual funds, there is no immediate cause for alarm. SEBI's regulations are preventive, not reactive. However, you should review your allocation. Financial planners generally recommend capping small-cap exposure at 10 to 15 percent of your total equity portfolio. If your small-cap funds have rallied and now constitute a larger share, consider rebalancing toward mid-cap or flexi-cap categories.
For new investors considering small-cap funds, the SIP route remains the most sensible entry strategy. Lump-sum investments in small-cap schemes carry elevated timing risk given their higher volatility. Use our SIP Calculator to plan a disciplined entry or the Lumpsum Calculator to understand how a one-time investment might perform across different return scenarios. The key is to invest with a minimum five-to-seven-year horizon and the discipline to stay the course through inevitable periods of underperformance.
Source
SEBI Circular SEBI/HO/IMD/IMD-PoD-1/P/CIR/2026/32, March 2026