Consider a scenario in your back-office risk desk where a high-net-worth client intends to take a substantial position in a small-cap stock that has recently seen erratic trading volumes. As you pull up the security master in your system, you notice the scrip is categorized as Group III, or an illiquid security.
If you treat this stock with the same risk parameters as a Nifty 50 constituent, you are setting your firm up for a significant collateral shortfall should the market turn against the client.
The Value at Risk (VaR) margin for illiquid securities is not set at the standard 5% or 7% levels; rather, it is significantly higher, often reaching 20% or more, precisely because the inability to exit the position quickly in a liquidity crunch creates a massive risk for the Clearing Corporation.
In the Indian market, Group III securities are those that do not meet the minimum liquidity criteria set by the exchanges. When you process a trade for such a scrip, your risk management system must automatically apply a higher margin to buffer against the ‘impact cost’ of liquidation.
If you fail to account for this higher margin, the client might receive an incorrect margin call notification or, worse, their trading limit might be erroneously inflated, allowing them to take on exposure that the firm cannot sustain if the settlement fails. Your role as an operations professional is to ensure that the risk monitoring software correctly pulls the enhanced VaR rates mandated by the exchange for these specific groups.
Think of the VaR margin as the market’s way of charging a premium for the risk of getting stuck with an asset that no one wants to buy during a downturn. By enforcing higher margins for illiquid stocks, you are effectively compelling the client to back their trades with more robust, liquid collateral. This is a critical line of defense for the broker.
If an error occurs here, the firm might face a liquidity crunch on the pay-in day, potentially forcing the firm to settle the trade from its own pocket before the auction settlement process kicks in. Always verify the current exchange circulars on security classification before confirming a large order, as these lists are dynamic and updated regularly to reflect changing market participation.
Nuance
Check Your Understanding
If a security is categorized as Group III by the exchange, what is the primary operational objective of applying a higher VaR margin on that security?
A client places a buy order for 5,000 shares of a security classified under Group III. The exchange-mandated VaR for this stock is 25%. If the total trade value is INR 10,00,000, how much minimum VaR margin must the broker collect to comply with standard risk regulations?
This is a companion read for Section 4.1 — RISK MANAGEMENT from PASS Securities Operations and Risk Management Examination by Akhilesh Gururani, available on Amazon Kindle.
Copyright © 2026 `Akhilesh Gururani. All rights reserved.