The strike price of an option represents the predetermined price at which the underlying asset can be bought or sold, depending on whether it is a call or put option. It is typically set at the time the option contract is created and remains fixed throughout its duration. However, in certain cases, adjustments to the strike price may be made to account for changes in the expected dividend yield of the underlying stock.
Dividends are periodic payments made by a company to its shareholders, usually in the form of cash or additional shares. They are typically declared by the company's board of directors and are based on the company's profitability and available cash. Dividends can have a significant impact on the value of an option, particularly for stocks that pay regular and substantial dividends.
When a company pays a dividend, the stock price tends to decrease by an amount roughly equal to the dividend payment. This is because the dividend payment reduces the company's cash reserves and, consequently, its overall value. As a result, the stock price may decline to reflect this reduction in value.
In the context of options, dividends can affect both call and put options differently. Let's consider each case separately:
1. Call Options:
For call options, which give the holder the right to buy the underlying stock, dividends can have a downward pressure on the stock price. As mentioned earlier, when a dividend is paid, the stock price tends to decrease. This decrease in stock price reduces the potential gains for call option holders since they have the right to buy the stock at a fixed strike price. Consequently, when a dividend is expected to be paid during the life of a call option, the strike price may be adjusted downward to reflect this anticipated decrease in stock price.
The adjustment to the strike price is typically made by reducing it by the amount of the expected dividend. This adjustment ensures that the call option holder can still benefit from potential gains despite the anticipated decline in stock price due to the dividend payment. By adjusting the strike price, the option remains attractive to investors, as it allows them to capture potential
upside movements in the stock price while
accounting for the expected decrease caused by the dividend.
2. Put Options:
For put options, which give the holder the right to sell the underlying stock, dividends can have an opposite effect compared to call options. When a dividend is paid, the stock price tends to decrease, which can increase the value of put options. This is because put option holders have the right to sell the stock at a fixed strike price, and a decrease in stock price enhances their ability to sell the stock at a higher price than its market value.
In the case of put options, adjustments to the strike price are less common. This is because the decrease in stock price resulting from dividends already benefits put option holders by potentially increasing their profits. Adjusting the strike price downward would further enhance their potential gains, which may not be desirable for option writers or market makers.
It is important to note that strike price adjustments due to expected dividends are not automatic and depend on various factors, including market conditions, option contract terms, and investor preferences. Additionally, strike price adjustments are typically made for options that are close to expiration and have a significant dividend payment expected during their remaining life.
In conclusion, while strike price adjustments based on expected dividend yield are not a universal practice, they can be made for call options to account for anticipated decreases in stock price resulting from dividend payments. These adjustments ensure that call option holders can still benefit from potential gains despite the expected decline in stock price. Conversely, put options may not require such adjustments as they already benefit from potential increases in value due to dividend-induced decreases in stock price.