7.9 Option Replication Using Put-Call Parity Flashcards

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1
Q

Put-call parity

A

an essential concept every trader should understand about options.

It is derived by comparing the payoffs of two portfolio strategies – fiduciary call and protective put.

the two portfolios provide identical payoffs at time T regardless of the ending underlying asset price:

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2
Q

A fiduciary call

A

composed of a risk-free asset with a face value of X to be paid at time T plus a call option c

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3
Q

protective put.

A

A protective put is composed of a long underlying asset S plus a put option p.

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4
Q

A long put position is equivalent to

A

being long a call, short the underlying, and long a risk-free bond:

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5
Q

A long call position is equivalent to

A

being long the underlying, long a put, and short a risk-free bond

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6
Q

Owning the underlying can be replicated by

A

buying a call, selling a put, and owning a risk-free bond:

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7
Q

Owning a risk-free bond can be replicated by

A

owning the underlying, buying a put, and selling a call

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8
Q

a covered call strategy

A

executed by owning an underlying asset and selling a call.

Investors can use this strategy to enhance their returns if they expect that assets in their portfolios are unlikely to appreciate significantly.

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9
Q

The payoffs for the two types of capital providers in case of company bankruptcy can be summarized as follows:

A

Debtholders receive min (D, VT)

Equity owners receive max (0, VT - D)

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