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Understanding Cost of Carry

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Nupur Wankhede

Table of Contents

Cost of carry refers to the total cost of holding a financial asset over a period, including interest, storage, and other related expenses. It plays a key role in pricing derivatives and helps traders understand the relationship between the spot price and futures price of an asset.

What Is Cost of Carry

The cost of carry (CoC) refers to the total expenses involved in holding a position in a financial instrument over a period. These costs can include:

  • Financing charges such as interest on borrowed funds

  • Storage costs for commodities or physical assets

  • Insurance premiums to protect the underlying asset

  • Opportunity cost, which is the return foregone by holding the asset instead of investing elsewhere

In derivatives trading — especially in futures — the cost of carry plays a crucial role in determining fair value. Traders and analysts consider CoC to identify whether a futures contract is fairly priced compared to its spot value.

Cost of Carry Formula & Model

The cost of carry model helps estimate the theoretical futures price based on spot price and associated costs. Below is the general structure of the formula:

Simplified Formula:

  • F = S + C

Where:

  • F = Futures Price

  • S = Spot Price

  • C = Cost of Carry

Expanded Cost of Carry Model (for financial assets):

F = S × e^(r - d) × t

Where:

  • F = Futures price

  • S = Spot price of the asset

  • r = Risk-free interest rate

  • d = Dividend yield (if any)

  • t = Time to maturity (in years)

  • e = Exponential constant (≈ 2.718)

This formula helps price futures accurately by accounting for interest income (or loss), dividends, and time value of money.

How to Calculate Cost of Carry

Let’s break down the cost of carry using an example relevant to equity futures in India:

Example:

  • Spot Price of Stock (S): ₹1,000

  • Risk-Free Interest Rate (r): 6% p.a.

  • Dividend Yield (d): 2% p.a.

  • Time to Maturity (t): 0.25 years (3 months)

Using the expanded model:
F = ₹1,000 × e^(0.06 - 0.02) × 0.25
F = ₹1,000 × e^(0.01)
F ≈ ₹1,000 × 1.01005 = ₹1,010.05

Thus, the fair value of the futures contract would be around ₹1,010.05, assuming no market distortion.

Interpretation:

If the actual traded futures price deviates significantly from ₹1,010.05, it may signal a deviation from theoretical pricing, which market participants often assess further to identify pricing anomalies.

Importance & Applications of Cost of Carry

Cost of carry serves as a key component in various financial strategies:

  • Cash-and-Carry Arbitrage: Traders use CoC to identify opportunities where the futures price is overvalued relative to the spot price.

  • Pricing Models: Used by analysts to determine fair value of futures and forwards.

  • Hedging Strategies: Informs the total cost involved in maintaining hedged positions over time.

  • Investment Decisions: Helps traders evaluate whether holding a position makes financial sense.

Understanding CoC provides clarity on pricing efficiency by highlighting hidden costs and pricing efficiency in derivative markets.

Pros and Cons of Cost of Carry Considerations

Here’s a comparison of advantages and limitations when using cost of carry in trading:

Pros Cons

Enhances pricing accuracy

Sensitive to fluctuating interest rates

Supports arbitrage strategies

Dependent on precise data input

Informs fair value calculations

May be complex for retail investors

Applicable across asset classes

Assumes optimal market conditions

Being aware of these factors helps market participants interpret cost of carry more accurately, without relying too heavily on theoretical assumptions.

Conclusion

The cost of carry is a foundational concept in derivatives, affecting pricing, arbitrage, and overall trading strategies. While the formula appears straightforward, its real-world application depends on market conditions, volatility, and the trader's ability to interpret the underlying components. Understanding and accurately calculating cost of carry enhances understanding of how derivatives are priced and how various costs impact market behaviour.

Disclaimer

This content is for informational purposes only and the same should not be construed as investment advice. Bajaj Finserv Direct Limited shall not be liable or responsible for any investment decision that you may take based on this content.

FAQs

How to calculate the cost of carry?

To calculate cost of carry, subtract any expected income (like dividends) from financing costs and adjust for the time to maturity. Use the formula: F = S × e^(r - d)t.

Carry cost refers to the total expense of holding an asset, including interest, insurance, storage, and opportunity costs.

Cost of carry influences pricing of futures and forwards. It enables fair value estimation, supports arbitrage, and can reflect shifts in market sentiment, interest rates, and risk premiums.

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Hi! I’m Nupur Wankhede
BSE Insitute Alumni

With a Postgraduate degree in Global Financial Markets from the Bombay Stock Exchange Institute, Nupur has over 8 years of experience in the financial markets, specializing in investments, stock market operations, and project management. She has contributed to process improvements, cross-functional initiatives & content development across investment products. She bridges investment strategy with execution, blending content insight, operational efficiency, and collaborative execution to deliver impactful outcomes.

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