Skip to main content

All About OEIC

6 min read•Updated on 7th Oct, 2026•by Team Angel One
An Open-Ended Investment Company (OEIC) is a pooled investment vehicle mainly used in the UK.
Share

An Open-Ended Investment Company, or OEIC, works much like a mutual fund in India. Money from multiple investors is pooled and invested according to a defined strategy.

The key difference is its corporate structure. An OEIC is set up as a company with variable capital, so the number of shares in issue can rise or fall depending on investor demand.

Here is how it allows investors to buy shares in a professionally managed fund.

Key Takeaways

  • OEICs are mainly associated with the UK and operate as pooled investment funds with a corporate structure.
  • Investors buy shares in the OEIC rather than directly owning each stock, bond, or other asset held by the fund.
  • The fund can issue new shares when investors put money in and cancel shares when investors redeem their holdings.
  • OEIC share prices are generally based on the value of the fund's underlying assets, making Net Asset Value (NAV) an important measure.
  • Charges, investment strategy, market risk, and fund performance should all be considered before investing.

What is an Open-Ended Investment Company?

An Open-Ended Investment Company is a collective investment scheme structured as a company. It pools money from multiple investors and uses that capital to invest in assets such as shares, government securities, debt, and other investments, depending on the fund's objective.

The term open-ended refers to the fund's ability to increase or reduce its capital. When new investors put money into the fund, new shares can be issued.

When existing investors redeem their holdings, shares can be cancelled. This means the size of the fund can change over time rather than remaining fixed.

OEICs are primarily associated with the UK. They were introduced as a corporate alternative to traditional unit trusts and have become an important part of the UK's retail investment market.

How Does an OEIC Work?

  • Investors put money into the OEIC: Money from different investors is pooled into the fund.
  • The fund issues shares: New shares can be created for investors entering the fund.
  • The fund invests the pooled money: A professional fund manager manages the portfolio according to the OEIC's investment strategy.
  • The value of the investments changes: The value of the OEIC rises or falls depending on the performance of the assets it holds.
  • Investors can redeem their shares: When investors exit, their shares can be surrendered to the fund and cancelled.

The important point is that investors do not control the individual assets inside the fund. Instead, they hold shares in the OEIC and receive an economic interest in the fund. The OEIC itself owns the underlying assets.

Why is an OEIC Called Open-Ended?

An OEIC is called open-ended because its share capital is not fixed.

Imagine an OEIC initially has 1 million shares. If investors put additional money into the fund, the OEIC can issue more shares. Its total number of shares may therefore rise to 1.2 million.

The opposite happens when investors redeem their holdings. Shares are cancelled, reducing the number of shares in circulation.

This is different from a closed-ended investment company, which generally issues a fixed amount of capital and allows investors to trade existing shares with other investors. In an open-ended structure, shares can be issued or redeemed by the fund itself.

How is an OEIC Share Price Calculated?

The value of an OEIC share is linked to the fund's Net Asset Value, or NAV.

A simple way to understand NAV is:

NAV per share = (Total value of fund assets − Fund liabilities) ÷ Number of shares

For example:

  • Total fund assets = £100 million
  • Fund liabilities = £5 million
  • Shares in issue = 9.5 million

Therefore:

NAV per share = (£100 million − £5 million) ÷ 9.5 million

NAV per share = £10

The NAV changes as the market value of the assets held by the OEIC changes. It can also change when the fund issues or cancels shares.

Unlike a traditional listed company, where a share price can move based on supply and demand between buyers and sellers, an open-ended fund's dealing price is tied closely to the value of its underlying portfolio.

What can an OEIC Invest In?

An OEIC's portfolio depends on its investment objective and strategy. Some funds may focus heavily on equities, while others may invest in bonds, government securities, or a combination of asset classes.

A fund can also focus on companies of different sizes, such as:

  • Large-cap companies
  • Mid-cap companies
  • Small-cap companies
  • A combination of different market segments

This pooled structure gives investors exposure to several investments through a single fund. It can provide diversification without requiring an investor to purchase every underlying security separately.

What are the Main Benefits of Investing in an OEIC?

Benefit   What it means 
Diversification  Money can be spread across multiple securities and asset classes. 
Professional management   Fund managers make portfolio decisions based on the fund's stated strategy. 
Flexible investment size  Investors can participate without having to purchase every underlying asset directly. 
Open-ended structure   New shares can be issued and existing shares can be redeemed. 
Different strategies  Investors can choose funds based on their investment objectives and risk preferences. 

What are the Costs of Investing in an OEIC?

Investing in an OEIC is not free. Investors may have to bear management and other fund-related expenses. The exact charges vary between funds and should be checked in the relevant fund documents.

Active funds generally require more management than passive funds and can therefore have higher management costs. Some OEICs may also have entry charges, while exit charges depend on the particular fund.

The effect of charges can be significant over a long investment period because expenses reduce the amount of money that remains invested. For example:

  • Investment = £10,000
  • Annual fund expenses = 1%
  • Approximate first-year expense = £10,000 × 1%
  • Expense = £100

The actual amount can vary as the value of the investment changes, but the example shows why charges matter when comparing funds.

How is an OEIC Different from a Unit Trust?

Both OEICs and unit trusts are open-ended collective investment schemes, but their legal structures differ.

Factor   OEIC  Unit Trust 
Structure  Company with variable capital   Trust 
Investor holding   Shares  Units 
Capital  Can increase or decrease  Can increase or decrease 
Management   Managed through an authorised corporate structure  Managed through a trust structure 
Pricing  Generally based on NAV   Can involve separate bid and offer prices 

OEICs were designed in part to provide a corporate alternative to unit trusts. UK government documents describe them as a corporate form of authorised investment fund, with many similarities to authorised unit trusts.

Who Manages and Safeguards an OEIC?

An OEIC has different parties performing different functions. The Authorised Corporate Director (ACD) is responsible for operating the scheme and managing the fund's investments.

A separate depositary or trustee structure is responsible for safeguarding the fund's assets. Investors are the shareholders in the OEIC.

This separation of responsibilities is important because investors do not manage the underlying portfolio themselves. The fund operates within the regulatory framework applicable to authorised investment funds.

In the UK, OEICs are subject to Financial Conduct Authority regulation, while the Open-Ended Investment Companies Regulations 2001 form part of the legal framework governing these structures.

What are the Risks of Investing in an OEIC?

An OEIC does not guarantee returns. The value of the investment depends on the assets held by the fund. Key risks include:

  • Market risk: A fall in the value of shares, bonds, or other assets can reduce the fund's NAV.
  • Strategy risk: A fund focused on one sector, geography, or asset class can be affected heavily by developments in that area.
  • Currency risk: Funds investing in overseas assets can be affected by exchange-rate movements.
  • Cost risk: Management and other charges can reduce long-term returns.
  • Liquidity risk: Underlying assets may not always be equally easy to sell during stressed market conditions.

Diversification can spread risk, but it cannot remove market risk completely.

Can Investors Outside the UK Invest in an OEIC?

OEICs are primarily UK-based investment vehicles, and access depends on the individual fund and the investor's circumstances. Some funds may accept applications from overseas investors, while others may have restrictions or require additional documentation.

For an investor in India, an OEIC should not be treated as simply another domestic mutual fund. Eligibility, foreign investment rules, taxation, currency conversion, and fund-specific conditions can all affect whether an investment is possible and suitable.

What Should Investors Check Before Investing in an OEIC?

Before investing, investors should examine:

  • Investment objective: Understand what the fund is designed to achieve.
  • Portfolio: Check the types of securities and sectors held.
  • Risk level: Consider how much the portfolio can fluctuate.
  • Charges: Review management fees and other expenses.
  • Past performance: Use historical returns as information, not as a guarantee of future results.
  • Fund manager: Understand who manages the portfolio and how the strategy is implemented.
  • Redemption terms: Check how and when shares can be redeemed.
  • Regulatory status: Confirm that the fund is appropriately authorised and regulated.

Conclusion

An Open-Ended Investment Company combines the pooled-investment model of a fund with a corporate structure. Investors buy shares in the OEIC, while professional managers invest the pooled capital according to the fund's strategy. Its open-ended nature allows the fund to issue new shares when investors enter and cancel shares when they exit. This makes the capital flexible and allows the fund to grow or shrink with investor demand.

For investors, the main attractions are diversification, professional management, and access to a broad portfolio through a single investment. However, costs, market risk, fund strategy, and eligibility should be assessed before committing money.

FAQs

An OEIC can generate returns through increases in the value of its underlying investments and, depending on the fund, income generated by those investments. The investor's overall return depends on the performance of the fund after applicable costs.

Not exactly. An OEIC and a mutual fund are both pooled investment structures, but an OEIC is organised as a company with variable capital. The term mutual fund is broader and can cover different legal structures.

Yes. If the market value of the investments held by the OEIC falls, the fund's NAV can decline. Investors can therefore receive less than the amount originally invested.

Its share capital can change. New shares can be issued when investors enter, while shares can be cancelled when investors redeem their holdings.

The corporate structure should not be confused with an ordinary listed company. OEIC shares are generally dealt through the fund rather than traded like ordinary company shares between investors on an exchange.

The Authorised Corporate Director, or ACD, operates the OEIC and is responsible for managing the fund's investment activities within its stated objectives.

An OEIC is an open-ended fund structure in which investors deal in shares with the fund. An ETF is designed to trade on a stock exchange throughout the trading day, with its market price moving as investors buy and sell.

No. OEIC investments are exposed to the performance of their underlying assets. Market movements can increase or decrease the value of an investor's holding.

Grow your wealth with SIP

4,000+ Mutual Funds to choose from
+91