Reading 46: Basics of Derivative Pricing and Valuation

50 questions available

Arbitrage, Replication, and Risk Neutrality10 min
Valuation of derivatives avoids reliance on investor risk preferences by using a no-arbitrage condition. Arbitrage is a transaction generating risk-free profit with no net investment. The law of one price dictates that assets with identical future cash flows must sell for the same price today. This concept allows for 'replication,' where a derivative's payoff is mimicked by a portfolio of the underlying asset and a risk-free bond. Because the portfolio is hedged and risk-free, its return must be the risk-free rate. This approach is called risk-neutral pricing.

Key Points

  • Arbitrage is a riskless profit with zero net investment.
  • Law of one price: Identical payoffs imply identical current prices.
  • Derivatives are priced using a risk-free hedge (replication).
  • Risk-neutral pricing discounts payoffs at the risk-free rate.
Pricing and Valuing Forwards and Futures15 min
The forward price is set at contract initiation so the contract's value is zero. The basic no-arbitrage forward price is the spot price compounded at the risk-free rate: F0(T) = S0(1+Rf)^T. While the forward 'price' is fixed in the contract, the 'value' changes as the spot price moves. The value of a long forward at time t is the difference between the current spot price and the present value of the forward price. Costs of holding an asset (storage) increase the forward price, while benefits (dividends, convenience yield) decrease it. The net cost of carry accounts for both.

Key Points

  • Forward Price is fixed; Forward Value fluctuates.
  • Value at initiation is zero.
  • Value at time t: Vt = St - PV(F0).
  • Costs increase forward price; benefits decrease it.
  • Futures prices differ from forwards if rates are correlated with prices.
Swaps and Forward Rate Agreements10 min
A Forward Rate Agreement (FRA) is a derivative on future interest rates. A swap is essentially a portfolio of FRAs. The fixed rate on a swap is set so the initial value of the swap is zero. Valuation of a swap during its life involves calculating the present value of the difference between the fixed rate payments and the expected floating rate payments. As expected future rates change, the value of the swap changes for the fixed and floating payers.

Key Points

  • Swaps are equivalent to a series of forward contracts.
  • Swap price (fixed rate) makes initial value zero.
  • Value changes with interest rate expectations.
  • FRAs hedge interest rate risk.
Option Valuation and Put-Call Parity15 min
Option value is the sum of exercise value (intrinsic) and time value. A call is in-the-money if the asset price exceeds the strike; a put is in-the-money if the strike exceeds the asset price. Put-call parity for European options states that a fiduciary call (Call + Bond) equals a protective put (Put + Stock). The formula is c + X/(1+Rf)^T = S + p. This relationship allows for the creation of synthetic instruments. The binomial model prices options by constructing a risk-free hedge over discrete periods, using risk-neutral probabilities derived from the size of up/down moves and the risk-free rate.

Key Points

  • Moneyness: Relationship between S and X.
  • Option Premium = Exercise Value + Time Value.
  • Put-Call Parity: c + PV(X) = S + p.
  • Binomial Model uses risk-neutral probabilities.
  • American options may be more valuable than European if early exercise offers benefits (e.g., dividends for calls, deep ITM for puts).

Questions

Question 1

Which of the following best describes the concept of arbitrage?

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Question 2

In the context of derivative pricing, what does the term 'replication' refer to?

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Question 3

Risk-neutral pricing determines the value of a derivative by discounting expected future cash flows at which rate?

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Question 4

At the initiation of a forward contract, which of the following statements regarding its value and price is correct?

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Question 5

Calculate the no-arbitrage forward price for a 1-year contract on an asset with a spot price of 100 EUR, assuming a risk-free rate of 5 percent and no holding costs or benefits.

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Question 6

An investor holds a long position in a forward contract with a forward price of 50. At expiration, the spot price of the underlying asset is 55. What is the payoff to the investor?

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Question 7

A forward contract was initiated with a forward price of 105. Six months later, the spot price of the asset is 110, and the risk-free rate is 4 percent. What is the value of the long forward position? (Assume T=1 at initiation, so 0.5 years remain).

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Question 8

How do monetary benefits, such as dividends, affect the no-arbitrage forward price of an asset?

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Question 9

What is the 'convenience yield' of an asset?

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Question 10

Calculate the no-arbitrage futures price for a 1-year contract on an asset with a spot price of 200, given a risk-free rate of 3 percent and a net cost of carry of -5 (negative).

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Question 11

If a forward contract on an asset has a positive net cost of carry (benefits exceed costs), the forward price will be:

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Question 12

What is the primary difference between a Forward Rate Agreement (FRA) and a standard forward contract?

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Question 13

To create a synthetic long position in an FRA (to hedge against rising rates), a bank could:

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Question 14

Why might the price of a futures contract differ from the price of an otherwise identical forward contract?

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Question 15

If interest rates and futures prices are positively correlated, the futures price will generally be:

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Question 16

An interest rate swap is economically equivalent to:

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Question 17

At the initiation of a plain vanilla interest rate swap, the value of the swap is:

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Question 18

A 'call' option is said to be 'in-the-money' when:

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Question 19

Calculate the exercise value (intrinsic value) of a put option with a strike price of 50 when the underlying stock is trading at 42.

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Question 20

An option has a premium of 5. Its exercise value is 3. What is its time value?

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Question 21

How does an increase in the volatility of the underlying asset affect the value of call and put options?

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Question 22

Which of the following factors is inversely related to the value of a call option (i.e., higher factor value leads to lower call value)?

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Question 23

Which of the following describes the relationship between the risk-free rate and the value of a put option?

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Question 24

According to put-call parity for European options, a fiduciary call (Call + Risk-free bond) has the same payoff as which portfolio?

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Question 25

Given the following: Stock Price = 52, Put Price = 1.50, Strike Price = 50, Risk-free Rate = 5 percent, Time = 0.25 years. Calculate the no-arbitrage price of the Call option using put-call parity.

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Question 26

Using put-call parity, how can a synthetic share of stock be created?

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Question 27

Put-Call-Forward parity is derived by substituting which of the following into the standard put-call parity equation?

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Question 28

In the binomial model, the risk-neutral probability of an up-move depends on:

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Question 29

Calculate the value of a 1-year call option using a one-period binomial model. Current Stock = 30. Up factor = 1.15. Down factor = 0.87. Risk-free rate = 7 percent. Strike = 30.

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Question 30

Under what condition would an American call option on a stock be worth more than an otherwise identical European call option?

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Question 31

Why might an American put option be exercised early?

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Question 32

If a portfolio has a guaranteed payoff of 105 in one year and costs 100 today, and the risk-free rate is 3 percent, what action should an arbitrageur take?

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Question 33

A 'fiduciary call' consists of:

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Question 34

For an asset with storage costs, the forward price is calculated as:

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Question 35

A 'synthetic' European put option can be created by:

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Question 36

Which of the following best describes the 'payoff' of a protective put at expiration?

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Question 37

In a one-period binomial model, the risk-neutral probability of a down move is:

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Question 38

If a call option is 'at-the-money', its time value is:

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Question 39

A 'synthetic' bond (risk-free asset) can be constructed using options and stock by:

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Question 40

If the forward price is F0(T) = 100 and the contract expires in T=1 year, what is the value of the forward contract to the long party when the spot price is 102 just before expiration (essentially t=T)?

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Question 41

An off-market forward contract is one where:

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Question 42

Which of the following portfolios replicates a long position in a Forward Rate Agreement (receiving floating, paying fixed)?

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Question 43

If the convenience yield of a commodity is extremely high, the market is likely in:

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Question 44

Calculate the price of a 1-year swap where the present value of expected floating payments is 2.0 million and the notional principal is 100 million. The discount factor for 1 year is 0.95.

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Question 45

A call option is worth more 'alive than dead' (uncercised) usually because:

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Question 46

Which factor would decrease the value of a call option?

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Question 47

In the binomial model, if the risk-free rate increases while U and D remain constant, the risk-neutral probability of an up-move (pi_U):

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Question 48

Value of a forward contract at expiration (Time T) is:

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Question 49

How is the settlement price of a futures contract typically determined?

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Question 50

What is the lower bound of a European call option price on a non-dividend paying stock?

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