Topic 13 Intro to Options Flashcards
Call Option
-Gives owner right to purchase an asset for a specified price at or before an expiration date
-Buyer/Owner/Holder vs Seller/Writer
Premium=amount the buyer of the call pays the seller aka price of the call
Payoff
-net cash flow to the seller of the option if option exercised at time, T
-It includes only the cash exchanged at time, T
-It is identical to all owners of the option at time, T
Profit-includes the premium
=Net cash flow to the owner of the option at time, T plus the premium paid at time 0
-owners of the option may have different profits at T as may have purchased/sold at different times and prices
-ignore TVM, acct profit
“Moneyness”
-relates to payoff for owner
In the money=would exercise option as payoff is positive
At the money= indifferent about exercising option; zero payoff
out of the money= would not exercise the option as payoff would be negative
American versus European
American-owner has right to exercise at any time; FREEDOM MF
European: only at expiration date
Covered Call
Write a call + Long/Buy Stock -> IF the option is exercised and need to deliver stock, the seller of the call is “covered” bc they own the stock already
Protective Put
Buy Put + Long/buy Stock -> If the stock price decreases, can exercise the put; kind of puts a floor on loses
Long Straddle
Buy Put + Buy Call with same T and X -> if stock price decreases can exercise the put. IF increases a lot can exercise the call; “protects” you from big changes in stock price
Replicating Portfolio
Buy a call + Write Put at same X and T + invest X/(1+r)^T in a riskless bond
-By doing so one can create “synthetic stock” -> must equal value of stock to avoid arbitrage
European Put-Call Parity
-Own a call, buy a stock on margin
Call-Put+PV Risk Free = Stock
*Can therefore price call based on value of put stock and RF and vice versa
European Put-Call Assumptions:
1) European options
2) Options must have same exercise price
3) assumes that other options, stocks, and bonds are fairly priced
4) Stock makes no dividend payments
required to depsoit X+Div for stocks dividends on replicating portfolio