What is an option?
An option is an agreement between two parties. Although there is a huge variety of options, they all involve a seller of an option (the writer) granting certain rights to the buyer of an option (the taker) in return for a payment (the premium).
What are call options?
A call option gives the taker the right, without obligation, to buy a specified trading instrument at a specified price, on or before a specified date. The writer of a share option must deliver the underlying shares, at the specified price, if the taker decides to exercise their option (to buy).
The writer receives a payment, known as a premium, for granting the taker this right.
What are put options?
A put option gives the taker the right, without obligation, to sell a specified trading instrument at a specified price, on or before a specified date. The writer of a share option must buy the underlying shares, at the specified price, if the taker decides to exercise their option (to sell).
The writer receives a payment, known as a premium, for granting the taker this right.
Risks to trading options
The risks involved in using options depends on the strategy employed. Option strategies may involve a single option series, or a number of option series, both puts and calls.
One little understood aspect of options is that when they are used in conjunction with other investments they can lower overall market risk. At the other end of the risk spectrum, writers of options can face large or even theoretically infinite risk. Its vitally important that users understand the risks of any particular strategy before transacting.
Reasons to trade options
Just as in every other investment choice, circumstances of the individual are important in determining the "right" options strategy. However the sheer power and versatily of options does multiple the ways options can be traded for both investors and trades.
Here are some of the reasons that investors and traders may want to trade options:
Investors
Earn income from your share portfolio - Investors can generate income from their portfolio by writing call options against their stock holdings. This is known as a covered call, or buy-write, and is one of the most commonly employed strategies by investors.
Protect share holdings – investors concerned about the near term outlook for a stock holding can protect against a share price fall by taking a put option in that stock. Options are available over more than 70 of the top shares listed on Australian exchanges.
Protect portfolios – investors worried about the market outlook can offset potential portfolio losses by taking put option over the index. If the market falls, the put options increase in value as the portfolio declines. The effectiveness of this strategy depends on a number of factors, including the composition of the individual portfolio.
Lock-in attractive prices – where investors identify an opportunity in a stock, but don’t have funds on hand to buy immediately, they can lock in a purchase price by taking a call option now and exercising the right to purchase later
Buy stocks cheaper – investors can reduce share purchase costs by writing put options in stock they’d like to buy. If the share price is below the option strike price at expiry, the investor buys the stock at the strike price and keeps the premium for the original put option write. A risk is that the stock rises quickly, and the put is not exercised, meaning the investor doesn’t buy the share. However in this scenario the investor still keeps the original premium. This is often referred to as a cash-covered put write.
Traders
Trade more opportunities– Option prices are sensitive to more factors than just the movement in the underlying share or index. Changes in volatility, interest rates and dividends can affect the value of options. This means traders can choose positions that reflect their views on more instruments and markets.
Increase capital efficiency through leverage – traders use the leverage options provide. As an example, a trader who thinks a stock may rise from the current price of $20 could invest just $1 in a call option. A stock rise of $2 could mean a $1 rise in the option. The return on capital invested in the stock is 10%, in the option it is 100%. This leverage comes at higher risk. If the stock falls $1 and stays lower, the loss on the share position is 5%, whereas the trader could lose 100% on their option.
Tailor market exposures – there are many option structures and strategies available. A proper understanding of the risks involved opens up the world of collars, straddles, strangles, vertical and horizontal spreads, butterflies and condors, among many others. Traders can profit from a stock or index rising, falling, or standing still. Some option strategies are particularly sensitive to changes in volatility, interest rates, and/or changes in the size and timing of dividends. Traders can construct positions that give more exact exposures to a potential event.
Limit position risk – the taker of an option can only lose the initial premium. Traders take advantage of this characteristic in many ways. Examples include investing a small percentage of the value of a basket of stocks in put options, reducing the overall risk of the traders position. A trader who believes Bank A is cheap relative to Bank B could take call options in Bank A, and put options in Bank B, reducing the risk of the trade to the premium spent. The possibilities in combining options, and options and other asset positions, are limited only by a trader’s imagination.