Risk Management

Clearing houses act as the central counter‑party (CCP) for every trade in the equity derivatives market. By standing between the buyer and the seller, they assume the risk that one side may default. This concentration of risk makes robust risk‑management practices mandatory under SEBI regulations.

Effective risk management protects the financial system by preventing a single default from cascading into a market‑wide crisis. It also safeguards investors’ funds, as the clearing house guarantees settlement even if a participant fails to deliver cash or securities.

For the NISM exam, questions often focus on how margins, the default fund and position limits together limit exposure. Remember that the clearing corporation’s primary objective is to ensure “no‑loss” settlement for all members.

The margin system collects collateral from members before a trade is executed. There are three main types: Initial Margin (IM) to cover potential future exposure, Variation Margin (VM) for daily mark‑to‑market gains or losses, and Additional Margin (AM) when market volatility spikes.

Initial Margin is usually calculated using a risk‑based model such as SPAN or a simple exposure formula. The goal is to hold enough collateral to survive a predefined stress scenario, often a 5‑day market move of 10‑15%.

Variation Margin is settled each trading day based on the change in the contract's market value. Failure to meet a VM call triggers an immediate liquidation of positions, protecting the CCP from further loss.

The default fund is a pooled resource contributed by all clearing members. Its purpose is to cover losses that exceed the defaulting member’s margin and collateral. SEBI mandates that the default fund be at least 5% of the total gross exposure of the clearing house.

When a member defaults, the CCP first uses that member’s margin, then taps the default fund. If the loss still exceeds the fund, the CCP may invoke a guarantee from the exchange or the government, but such scenarios are extremely rare.

Exam questions may ask you to identify the hierarchy of loss‑absorption: Member’s Margin → Default Fund → Guarantee. Remember the order; mixing it up leads to loss of marks.

Position limits restrict the maximum open interest a member can hold in a single contract or across a group of related contracts. These limits prevent concentration risk, where a member’s failure could jeopardise the clearing house.

SEBI requires clearing houses to set both per‑member limits and aggregate market limits. Limits are reviewed periodically and can be tightened during periods of market stress.

For the exam, remember that position limits are a proactive tool, whereas margins are reactive. Both work together to keep the system resilient.

Clearing houses continuously monitor real‑time exposure, margin adequacy and liquidity of members. Automated systems flag breaches of margin thresholds and trigger margin calls instantly.

Stress testing involves applying extreme but plausible market scenarios (e.g., 15% index fall in one day) to the entire portfolio. The results determine whether the default fund and margins are sufficient.

Regular reporting to SEBI, including daily position statements and monthly risk‑management summaries, is mandatory. Exam questions may ask which reports are submitted and the frequency of stress tests.

SEBI’s Circular on Risk Management for Clearing Corporations (2022) outlines the minimum capital, default fund sizing and stress‑testing requirements. The exchange’s own rulebook adds operational guidelines, such as daily settlement cycles and member‑wise reporting.

Non‑compliance can lead to penalties, suspension of clearing privileges, or even revocation of membership. Therefore, clearing members must maintain accurate records, submit timely margin, and adhere to position‑limit notifications.

In the exam, you may be asked to identify which body issues the default‑fund requirement (SEBI) versus which entity defines the margin methodology (the exchange). Keep this distinction clear.