What is mutual fund stress testing? SEBI rules

Mutual fund stress testing estimates how long a scheme would take to sell down part of its portfolio if a lot of investors asked for their money at once. In India, SEBI directed asset management companies, through AMFI, to publish these results for mid cap and small cap equity schemes every month, starting 15 March 2024. The headline outputs are two numbers: the days needed to liquidate 25 percent and 50 percent of the portfolio under stressed conditions. This guide explains what mutual fund stress testing measures, what the methodology excludes, and the metrics published alongside it. It is not investment advice.

What the stress test measures

The test asks a liquidity question, not a performance one. It does not estimate how far a scheme might fall. It estimates how long the manager would need to get out, which is a different risk and one that rarely appears anywhere else in fund disclosure.

The calculation works on a pro rata basis, meaning the scheme is assumed to sell down across its holdings rather than dumping its most liquid names first. Two figures are published, for liquidating 25 percent and 50 percent of the portfolio.

The methodology excludes the least liquid 20 percent of the portfolio, so the published figure describes the more liquid 80 percent. That exclusion matters when reading the number: it is not the time to exit everything, and the tail that was set aside is by definition the part that would be hardest to sell.

What is published alongside

The stress test does not travel alone. Three further metrics are disclosed with it each month, and they are what make the liquidation figure interpretable:

Read together the four give a monthly, comparable, cross-industry picture of the same two fund categories. Because every AMC publishes on the same date using the same method, this is one of the few Indian fund disclosures where a like-for-like comparison across houses is straightforward.

How to read it, and what it is not

Three cautions:

• Bigger is not automatically worse. Liquidation time scales with size. A large scheme in the same category will generally show longer days than a small one holding similar names, so the figure is most informative read against the scheme's own history and against peers of comparable size.
• It is a model, not an observation. The days figure is an estimate under assumed stressed conditions. No scheme has been observed liquidating half its portfolio to test it.
• The excluded tail is real. The least liquid 20 percent is removed from the calculation, not from the fund.

The disclosure sits alongside the other risk-facing documents a scheme publishes: the riskometer, which puts the scheme on a labelled risk scale, the monthly factsheet, and the scheme information document. The stress test is the one that speaks specifically to liquidity, which is why it was introduced for the two categories where liquidity is thinnest. For the underlying holdings behind these numbers, see how to find which mutual funds are buying a stock and how to check mutual fund portfolio overlap. Flock reads disclosure filings and keeps each one dated and linked to its source. What any of it means for your money is your call to make.