Glossary · Funds & Asset Management

Net Asset Value

The per-unit value of a mutual fund, calculated by dividing the total value of the fund's assets minus liabilities by the number of outstanding units.

Written by BSL Research Desk · Reviewed by BSL Research (SECP-licensed securities brokerage) · Updated 13 Jul 2026 · Also known as NAV

01What is Net Asset Value?

The definition — and what it means in practice.

Net Asset Value (NAV) is the per-unit value of a mutual fund. It is calculated by taking the fund’s total assets (such as shares, bonds and cash), subtracting its liabilities (such as fees payable and other expenses), and dividing the result by the number of units outstanding. NAV is usually expressed as a rupee amount per unit and changes as the value of the fund’s holdings and liabilities change.

NAV matters because it is the reference price used to track a mutual fund’s performance and to price investors’ transactions in units. If the fund’s portfolio rises in value, NAV generally rises; if it falls, NAV generally falls. Comparing NAV movement over time (and after fees) helps you understand what the fund is delivering, separate from how many units you happen to own.

In plain English

If a fund has assets of Rs 1,000, liabilities of Rs 100 and 90 units, its NAV is (1,000−100)÷90 = Rs 10 per unit.

Formula

NAV = (Total Assets − Total Liabilities) ÷ Units Outstanding

Use the fund’s valued assets and liabilities for the same valuation point; units outstanding are the total fund units currently issued.

  • NAV is a per-unit number, not the fund’s total size.
  • NAV changes with the market value of holdings and with liabilities/expenses.
  • Transactions in open-end funds are typically priced off the applicable NAV.
  • A higher NAV does not automatically mean a “better” fund; performance depends on NAV growth and costs.

02How net asset value works on the PSX

The Pakistan-specific rules, conventions, and numbers.

For many Pakistan investors, NAV is encountered through mutual funds and index funds that may hold Pakistan Stock Exchange (PSX) listed shares, government securities, or a mix of assets. Even if a fund invests heavily in PSX equities, you generally do not buy and sell the underlying shares yourself; your investment is in fund units priced using NAV.

NAV helps a PSX-focused investor compare a fund’s results with equity market benchmarks without needing to track every portfolio holding. When PSX share prices move, the value of a fund’s equity holdings changes, which can flow through to the fund’s assets and therefore its NAV. Looking at NAV over time is the practical way to observe how a fund’s PSX exposure has translated into unit value.

03Common misconceptions

Where investors most often get this wrong.

Myth

A low NAV means the fund is cheaper and therefore a better buy.

Reality

NAV is per unit. A lower NAV may simply mean the fund started at a lower base or has more units outstanding; what matters is performance, risk and costs.

Myth

NAV is the same thing as a share price on the PSX.

Reality

NAV is calculated from a fund’s assets minus liabilities divided by units outstanding. A listed share price is set by trading in the market order book.

Myth

NAV only changes when the fund sells something.

Reality

NAV can change whenever the market value of the fund’s holdings changes or when liabilities and expenses accrue, even without any trading activity.

04Using net asset value on BSL

Where this term shows up across the platform — with live data.

  • Learn core terms around funds on our glossary.
  • Compare PSX shares a fund might hold using stocks.
  • Filter and review listed companies by sector with sectors.
  • Track broad market context via the KSE-100 index.

05Frequently asked questions

What investors ask about net asset value on the PSX.

Frequently Asked Questions

NAV is calculated as the fund’s total assets minus total liabilities, divided by the number of units outstanding. It results in a rupee value per unit that reflects the valued portfolio and the fund’s expenses and other payables.

06Related terms

Keep building the picture.

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