Definition
An open-end fund issues new units whenever investors buy and cancels units when they redeem. A closed-end fund issues a fixed number of shares once, and investors then trade those shares with each other on an exchange.
For an open-end fund, the price you pay or receive is based on the fund's net asset value (NAV) per unit. NAV is the market value of the portfolio minus liabilities, divided by the units in issue. For a closed-end fund, the price is set by supply and demand on the exchange, so it can sit above NAV (a premium) or below it (a discount).
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Worked example (hypothetical)
Take a closed-end fund whose NAV per share is N and whose exchange price is P.
- Premium or discount = (P − N) ÷ N
- If P is below N, the fund trades at a discount. A buyer gets a claim on the portfolio for less than its stated value, but nothing forces the gap to close.
- If P is above N, the buyer pays more than the portfolio is worth per share.
Now take an open-end fund holding the same portfolio. An investor who redeems receives roughly N per unit, adjusted for any sales load (an entry or exit charge) the offering document allows. The fund sells assets to pay out the investor, and the number of units in issue falls.
Both funds can lose value when the portfolio falls. A fund structure does not protect capital.
Where you see the terms
- Fund fact sheets and offering documents state the structure, the NAV, how often it is published, and any loads or redemption rules. When you look at mutual funds in Pakistan, check this document for each fund.
- Exchange data shows closed-end fund shares like any listed stock, with a bid, an ask and a volume. Some data providers also show the premium or discount.
- News uses "redemptions" or "outflows" for open-end funds and "discount widening" for closed-end funds.
In Pakistan, the supervisor for listed securities is the Securities and Exchange Commission of Pakistan (SECP), with trading in listed securities and commodities only via SECP-licensed securities and futures brokers.
Precise points and edge cases
- Liquidity source. An open-end fund gets its liquidity from the fund itself. A closed-end fund's liquidity depends on buyers and sellers on the exchange.
- Redemption pressure. Heavy redemptions can force an open-end fund to sell assets at weak prices. The effect is similar to a bank run. Fund rules may allow redemptions to be suspended or gated.
- No forced selling in closed-end funds. The manager can hold illiquid assets because shareholders cannot redeem. The cost of this is a discount that can last a long time.
- ETFs. An exchange-traded fund is technically open-end, because units are created and cancelled. It also trades on an exchange, and arbitrage by large dealers usually keeps its price close to NAV. See exchange-traded product.
- Conversion. A closed-end fund can be converted to open-end, or wound up, if holders approve under its rules. The discount usually narrows when this is announced.
- Pricing time. Open-end orders are usually filled at the next NAV calculated after the order, not at the last published NAV.
Related terms
- Exchange-traded product and Exchange-traded note (ETN)
- Asset class and Book value
- Custodian, the bank that holds the fund's assets
- Free float and Delisting
- Annualized return, used in fund performance tables
- Saving, Investing, Loans and the full Trading glossary
Frequent questions
What is the open-end fund meaning in simple words?
It is a fund that creates units when you buy and cancels them when you sell back to the fund, at a price based on NAV.
Can a closed-end fund be bought from the fund manager?
Usually not after the initial offer. You buy its shares on the exchange from another investor through a broker.
Why does a closed-end fund trade at a discount?
Common reasons are fees, low demand, illiquid holdings, or doubts about the manager. The discount can persist or widen.
Is an open-end vs closed-end fund safer?
Neither structure is safer by design. Both carry market risk. The difference is how you get in and out and what sets the price you get.
