云上日照

卖出看涨期权（Short Call）的损益平衡点计算公式非常简单，回答：
损益平衡点 = 行权价 + 权利金（期权费）
详细解析：
定义：
行权价 (Strike Price)：期权合约中约定的买卖价格。
权利金 (Premium)：你作为卖方，在卖出期权时立即收到的收入。
逻辑推导：
当你卖出看涨期权时，你最大的收益就是收到的权利金。
如果标的资产价格上涨超过行权价，买方会行权，你开始产生亏损。
当标的资产价格上涨的幅度（即：当前股价 - 行权价）正好等于你收到的权利金时，你的亏损抵消了之前的收入，此时总盈亏为0。
因此，平衡点就是 行权价 + 权利金。
举例说明：
假设你卖出一张股票看涨期权：
行权价：$100
收到权利金：$5
损益平衡点 = $100 + $5 = $105
结果分析：
若到期股价 < $100：期权作废，你赚取全部 $5 权利金（盈利）。
若到期股价 = $105：买方行权获利 $5，但这正好抵消你收到的 $5 权利金，你不赚不赔（平衡）。
若到期股价 > $105：买方行权获利超过 $5，你的亏损开始扩大（亏损）。
风险提示：
卖出裸看涨期权（Naked Short Call）的理论风险是无限的，因为标的资产价格上涨没有上限。

The formula for calculating the break-even point of a short call option is very simple and can be answered directly :
Break-even point = Strike price + Premium (option premium)
Detailed explanation:
Definition:
Strike price: The agreed-upon price for buying or selling the underlying asset in the option contract.
Premium: The income you receive immediately as the seller when you sell the option.
Logical deduction:
When you sell a call option, your maximum gain is the premium you receive.
If the price of the underlying asset rises above the strike price, the buyer will exercise the option and you will start to incur losses.
When the increase in the price of the underlying asset (i.e., current stock price - strike price) is exactly equal to the premium you received, your losses offset your previous income, and your total profit and loss is zero.
Therefore, the break-even point is the strike price plus the premium.
Example:
Suppose you sell a call option on a stock:
Strike price: $100
Premium received: $5
Break-even point = $100 + $5 = $105
Result analysis:
If the stock price at expiration < $100: The option expires worthless, and you earn the full $5 premium (profit).
If the stock price at expiration = $105: The buyer exercises the option and makes a $5 profit, but this exactly offsets the $5 premium you received, resulting in no gain or loss (break-even).
If the stock price at expiration > $105: The buyer exercises the option and makes a profit of more than $5, and your losses start to increase (loss).
Risk warning:
The theoretical risk of selling a naked call option (Naked Short Call) is unlimited because there is no upper limit to the increase in the price of the underlying asset.