What it means
Funds need a legal body, and Britain's standard one is corporate: an OEIC pools investors' money inside a company whose only business is holding the portfolio, with shares that investors buy and sell back to the fund itself. Open-ended is the operative word, because the fund issues new shares when money arrives and cancels them on redemption, so the share count breathes with demand and the price never strays far from asset value.
The structure answers the closed-end problem, since investment trusts trade at premiums and discounts to asset value while the OEIC's create-and-cancel mechanism abolishes the gap by design. Single pricing defines the dealing.
One price, computed from the portfolio's net asset value, governs both buying and selling each day, with the dilution adjustments disclosed in the documents. Entry costs, exit costs and the dilution levy all work through the one quoted figure, which keeps comparison shopping simpler than the dual-priced world.
The FCA Handbook writes the definition, as the Financial Conduct Authority's glossary entry for OEIC sets the regulatory meaning inside the rulebook that governs how these funds are run and sold. An authorised corporate director (ACD) runs it, so day-to-day management sits with a regulated ACD rather than a board of investor representatives, a governance model regulators supervise directly.
Unit trusts are the sibling form, with the same open-ended mechanics but trust law instead of company law, and the industry has spent years converting the older unit trusts into OEICs. Global readers meet cousins everywhere, because the American mutual fund and the European UCITS share the same open-ended mechanics and the OEIC is simply Britain's corporate-shaped version.
For a business owner holding company cash or personal savings in British funds, the label tells you the mechanics. Your money enters and leaves at asset value daily, without a market price to second-guess.
For investors, the practical checks are three. Confirm the fund is authorised, read the dealing and dilution terms, and check the ACD's record, because the structure is standard while the management is not.
In practice
Real-world examples.
Example
A saver redeems 10,000 shares and receives the day's single price of $2.00, or $20,000, with no market discount to negotiate. The price is the net asset value per share. The proceeds follow at the settlement date in the fund's documents.
Example
A fund converts from unit trust to OEIC form and tells unitholders that the dealing mechanics stay the same. Holders still buy and sell at net asset value, but the vehicle is now a company run by an authorised corporate director. Unitholders notice no change in how they trade.
Example
An ACD suspends dealing after a liquidity crisis, and the rulebook's safeguards become real for investors. Redemptions pause until the portfolio can be valued and sold in an orderly way. The provision exists for extreme conditions, not everyday use.
Formula
Calculation
Share price = fund net asset value / shares in issue, struck daily.
Worked example. A $400 million portfolio with 200 million shares prices at $400,000,000 / 200,000,000 = $2.00 for both entry and exit that day, before any disclosed dilution levy. An investor who puts in $1,000,000 receives $1,000,000 / $2.00 = 500,000 newly created shares. The fund now holds $401,000,000 with 200,500,000 shares, so the price is still $401,000,000 / 200,500,000 = $2.00. If that investor later redeems 250,000 shares at the same price, those shares are cancelled and the investor receives 250,000 x $2.00 = $500,000.Case study
Seen in the real world.
In this illustrative fictional case, Wen, finance director of a charity, moves reserves from a closed-end trust trading at a 6% discount into an OEIC. The trust's portfolio was worth $500,000, but selling the holding at the discounted market price would bring in only $500,000 x 0.94 = $470,000, a $30,000 shortfall. Board nerves about selling into the discount vanish once the new holding redeems at net asset value on the first try. The finance committee adds a liquidity line to its investment policy naming the structure it prefers, and the discount never troubles the charity again.
Watch out
Common mistakes.
- Assuming all funds price like shares, when OEICs deal at net asset value directly with the fund and no market premium or discount appears.
- Ignoring dilution adjustments, when large flows shift transaction costs onto remaining investors unless a dilution levy or swing price moves them to those joining and leaving.
- Forgetting the dealing is daily, not instant, when orders strike at the next valuation point, and extreme conditions can suspend redemptions entirely.
Questions
People also ask.
What is an OEIC?
A British open-ended investment company: a fund structured as a company that creates and cancels shares to meet investor demand, keeping the price aligned with net asset value.
How is it regulated?
Under the Financial Conduct Authority's rulebook. The FCA Handbook glossary defines the OEIC, and an authorised corporate director manages the fund under direct supervision.
How does it differ from an investment trust?
A trust issues a fixed share count that trades on the market, drifting to premiums and discounts. The OEIC creates and cancels shares and deals at asset value daily, so there is no gap.
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