Call spread意思

"Call spread" is a term used in the context of options trading, specifically in the stock market. It refers to a strategy where an investor buys one call option and sells another call option of the same underlying asset (typically a stock) but with a higher strike price.

In a call spread, the investor profits if the price of the underlying stock rises, but the profit is limited because it is capped at the difference between the strike prices minus the premium paid for the call option that was bought. If the stock price falls, the investor's loss is limited to the premium received for selling the call option that was sold.

The call spread strategy is considered to be a bullish strategy because it profits when the underlying stock price rises, but it is also a relatively low-risk strategy because the investor's loss is limited. It is a way for investors to take a position in a stock without committing as much capital as would be required to buy the stock outright, and it can also provide some downside protection.