Arbitrage Funds Example: How Investors Earn Low-Risk Returns (With Simple Examples)

Arbitrage mutual funds can look complicated, but at their core they simply buy low in one market and sell high in another, locking in small, low‑risk profits for investors. In this blog, we’ll break down how they work using very simple numbers so you can see exactly where the returns come from.

What are arbitrage funds?

An arbitrage mutual fund is a hybrid scheme that aims to earn returns by exploiting temporary price differences for the same stock in different markets, usually the cash (spot) market and the futures market. When a stock trades at one price in the cash market and a slightly different price in the futures market, the fund simultaneously buys in the cheaper market and sells in the more expensive one.

In India, these schemes are treated as equity‑oriented mutual funds because regulations require them to keep at least about 65% of their portfolio in equities and equity‑related instruments, with the rest usually parked in short‑term debt or money market securities. This structure lets them behave like low‑risk, market‑neutral products in terms of volatility, while still enjoying equity‑style tax treatment.

Simple arbitrage idea in daily life

Before jumping into markets, think of a basic real‑life arbitrage trading example. Suppose a mango seller can buy mangoes in one mandi for ₹100 per crate and sell the same crate in another nearby market for ₹110 at the same time—there is a locked‑in profit of ₹10 per crate without taking price risk later.

That is exactly what arbitrage is: buying an item in one place where it’s cheaper and selling it where it’s slightly more expensive, at roughly the same time, to pocket the difference. In financial markets, the “item” is a stock or index, and the “two markets” are usually the spot and futures segments or sometimes two different stock exchanges.

How arbitrage mutual funds work

Arbitrage schemes follow the same buy‑low‑sell‑high logic but use stocks and derivatives instead of mangoes. Here’s the typical mechanism:

1. The fund manager scans for a stock trading at different prices in the cash and futures markets—for example, ₹100 in the cash market and ₹102 in the futures market.

2. The fund buys the stock in the cash market at ₹100 and simultaneously sells (shorts) the futures contract at ₹102, creating a fully hedged position.investor.

3. On or before the futures expiry date, the cash and futures prices converge, and the fund closes both legs, locking in roughly the ₹2 per‑share spread as profit.investor.

Because the buy and sell are executed together on the same underlying stock, the strategy is largely insulated from whether the market goes up or down after the trade—it is focused on capturing the price gap itself, not predicting the direction. When fewer such gaps are available, the fund will temporarily park more money in low‑risk debt or money market instruments to keep overall volatility in check.

Step‑by‑step numerical example

Let’s walk through a very simple arbitrage funds example using small, round numbers so the math is easy to follow.

Example 1: Basic cash–futures spread

• A stock trades at ₹100 in the cash market and ₹102 in the futures market.

• The arbitrage scheme buys 1,000 shares in the cash market at ₹100 and simultaneously sells 1,000 shares via futures at ₹102.

Locked‑in spread per share = ₹102 − ₹100 = ₹2.

Total locked‑in profit (ignoring costs) = ₹2 × 1,000 = ₹2,000.

At futures expiry, the fund exits both positions; even if the stock swings up or down in between, the combined position is designed so that the ₹2 per‑share spread is captured.

Example 2: Real‑style numbers from Indian markets

One explainer uses the example of Infosys trading at ₹1,466 in the cash market and ₹1,472 in the futures market, a ₹6 gap. If the fund buys 100 shares in cash at ₹1,466 and sells 100 shares in futures at ₹1,472, the potential arbitrage profit is:

Profit = (₹1,472 − ₹1,466) × 100 = ₹600.

The key idea is that many such small, hedged trades across dozens of stocks are repeated to convert tiny spreads into a steady, low‑risk return stream for investors.

Where the returns really come from

Arbitrage schemes don’t try to “beat the market” the way regular equity funds do; instead, they harvest small mispricing gaps again and again. The gross return in any period mainly depends on how wide and how frequent these cash–futures spreads are, plus any extra interest income from the portion kept in short‑term debt.

When volatility in the stock market is higher, the price difference between spot and futures tends to widen, creating better opportunities and usually higher arbitrage yields. Various Indian sources suggest that over time these schemes have typically delivered annualised returns in the broad 5–8% range, though exact numbers vary by period, fund, and prevailing spreads, and there is no guarantee of any specific return.

Key risks investors should know

While the strategy is considered low‑risk compared to pure equity, arbitrage schemes are not risk‑free. Important risks include:

• Spread risk: If arbitrage opportunities shrink because the cash and futures prices move closer together, future returns can fall even though your capital is still relatively protected by hedging.

• Execution and liquidity risk: In real markets, there can be slippage or difficulty executing both legs at the ideal prices or in large quantities, especially in less‑liquid stocks or during sudden shocks.

• Short‑term volatility: Because positions are marked‑to‑market daily, you may see small negative returns over very short holding periods, even if the spread converges favourably by expiry.

Also, when there are very few attractive mispricing situations, funds may hold more in debt instruments, which introduces interest‑rate and credit risk similar to short‑duration debt products. So “low‑risk” here means relatively lower volatility than regular equity funds, not the same capital certainty as a guaranteed fixed deposit.

Tax rules for Indian investors

For investors in India, one major attraction is taxation. Because arbitrage schemes typically maintain more than around 65% exposure to equities and equity‑related instruments, they are classified as equity‑oriented mutual funds for tax purposes.

Under the latest framework discussed by industry sources, gains on units held up to 12 months are treated as short‑term capital gains (STCG) on equity, taxed at a flat 20% rate for transfers after the mid‑2024 rule change, while units held for more than 12 months are treated as long‑term capital gains (LTCG) taxed at 12.5% after an annual exemption (currently quoted around ₹1.25 lakh of eligible long‑term gains). By contrast, interest from fixed deposits is taxed at your slab rate, which can be much higher for many investors, making well‑managed arbitrage funds in India a potentially more tax‑efficient parking place for surplus money if you are comfortable with their risk profile.

(Always confirm current tax rates with your CA or official sources before investing, as rules and thresholds can change.)

When arbitrage schemes fit your portfolio

Arbitrage‑oriented funds are usually positioned for conservative to moderate investors who want to park money with relatively low volatility but are okay with returns that broadly resemble short‑term debt or slightly better. Common use‑cases include:miraeassetmf.co+2

• Parking surplus cash for a horizon of at least 3–6 months, especially during phases of elevated market volatility when spreads tend to be wider.

• Investors who like equity‑style taxation but do not want full equity market risk.

• A tactical allocation as an alternative to, or alongside, liquid and ultra‑short‑term funds within a diversified portfolio.

They are generally not suitable for getting very high returns or for investors with extremely short horizons of a few days, because spreads can temporarily compress and daily NAVs can move slightly negative in the very short term.

Quick FAQs in simple language

1. What is “arbitrage fund meaning” in one line?
It is a mutual fund that mainly earns by buying stocks where they are slightly cheaper and simultaneously selling them where they are slightly more expensive, aiming for low‑risk, hedged profits.investor.sebi.gov+2

2. Are these schemes guaranteed or risk‑free?
No, there is no guarantee—returns depend on how many arbitrage opportunities exist, execution quality, and interest‑rate conditions, although the hedged structure makes them less volatile than traditional equity funds.miraeassetmf.co+2

3. How are they different from normal equity funds?
Regular equity funds try to benefit from long‑term stock price appreciation and therefore rise and fall with the market, while arbitrage funds mostly look for short‑term price gaps between cash and futures markets and hedge both sides to remain broadly market‑neutral.zerodha+2

How Sharevega Educational suggests you think about them

From an educational standpoint, Sharevega Educational recommends you look at these schemes as a specialised tool for specific situations, not a magic high‑return product. They can make sense if you:

• Have surplus funds for a few months,

• Want lower volatility than pure equity,

• Value the potential tax advantages that equity‑style treatment can offer versus some other parking options, and

• Understand that returns will usually be modest and depend on market spreads.