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There are two types of options: calls and puts.
Calls give the buyer the right, but not the obligation, to buy a stock at a specific price by a specific date. The seller of the call must deliver the stock if the buyer requests it.
For example, if Merck (NYSE: MRK) is trading at $77, an investor can buy one March $80 call for $0.40. Options contracts are usually for 100 shares, so that means that the buyer is buying the right, but not the obligation, to buy 100 shares for $0.40 per share, or $40 in total, by March 15 (most options expire on the third Friday of the month).
Why would an investor spend $40 for the right to buy Merck at $80 if it’s trading at $77? Likely because they think the stock will be worth more than that by March 15. If they’re wrong, it will cost them only $40.
If they buy the stock at $77 and it falls to $70, they’ll lose $700. Buying a call caps their loss at $40. If they’re right and the stock is worth more than $80, they can buy the stock at $80, or the option will likely increase in value. In that case, they could sell the call for more than the $40 they paid for it.
A small move in the stock can lead to enormous gains in the calls. If Merck trades up to $84, that’s a 9% move in the stock, but the calls will be worth at least $4 because the stock is $4 above the agreed-upon price. The $0.40 call is now worth $4, or 10 times the original price. The stock moved 9%, but the option gained 900%.
Buying a call lowers your potential loss and capital outlay but still allows you to participate in the upside if the stock moves higher. The downside is that stocks don’t always cooperate according to your timeline.
If on March 15 Merck is trading at $79.50, the call will expire worthless. If the following week Merck takes off and hits $90, the call buyer is out of luck. The call has already expired.
But you don’t have to only buy calls. You can also sell them.
Let’s say you own shares of Merck and you want to generate some extra income. You sell the June $80 calls for $1.90.
That means that at any time before the third Friday in June, the buyer can demand your stock. They won’t demand the shares if they’re trading below $80 – but if the stock is trading at $100, you’re selling your stock to them at $80 if they demand it.
The call buyer is placing a bet that the stock is going to go higher. By selling the call, you become the bookie and take that bet. Because the call costs $1.90, you’re getting paid $190 to agree to provide Merck shares at $80. If the calls expire worthless, you keep the $190.
If the stock moves higher, you can always buy back the calls. The price could be higher or lower than what you paid depending on different variables, but this is an option if you don’t want to give up your stock – as long as the buyer hasn’t demanded it already.
When you own a stock and sell calls against it, the strategy is known as selling covered calls.
This is the only way that you should sell calls.
Here’s why: Let’s say you sell the Merck June $80 calls for $1.90 but don’t own the stock. You collect the $190.
Merck shares start rising, and then they start soaring. In June, the stock trades at $200 and the buyer demands the shares. You have to go into the open market and buy the stock for $200 in order to sell the calls at $80. Your loss would be huge.
When you sell a call without owning the stock, your potential losses are unlimited.
Puts are like insurance contracts. A put gives the buyer the right, but not the obligation, to sell a stock at a specific price by a certain date. The seller of the put must buy the stock if the put buyer demands it.
If someone owns Merck at $77 and is concerned that the price could drop after the company reports earnings in May, they could buy the June $70 puts for $1.30. That means their loss would be capped at $7, or 9% of the stock price.
If the stock drops to $50, they can still sell their shares at $70, or they can take profits on the puts (which will have increased in value) and keep the stock. If Merck never falls in price, the investor loses the $1.30 per share, or $130 total. It’s like buying insurance on your stock.
The seller of the put acts as the insurance company. Writing insurance tends to be lucrative, but you must keep in mind that occasionally there is a disaster, so you need to be prepared.
I recommend selling puts only on stocks you’d like to own at a certain price.
Let’s say that you like Merck but believe $77 is too expensive. However, you’d be happy to own it at $70.
You could sell the June $70 put for $1.30 and collect the $130. If Merck never reaches $70, you could keep the $130, like an insurance company keeps a premium when no claim is made.
If the stock drops to $70 or lower, the put seller may be required to buy the stock at $70. They’ll still keep the $1.30, which lowers the real price paid for the stock to $68.70.
The risk is that the stock will drop well below $70 and you will have paid $70 for a stock that’s now worth $50. But remember: You said you’d be happy to own it at $70 previously.
Like selling a call, you can always buy the put back before the stock is sold to you if you no longer want to buy the stock. You may take a loss on the puts, but at least you won’t be stuck with a stock you no longer want.
Buying puts and calls allows you to speculate on a stock’s direction without a large outlay of capital. Your loss is capped, but the odds of success are lower because of the time constraint.
Selling puts and calls is a terrific way to earn income as long as you’re smart about managing the risk.
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