影响看涨期权价值的因素 Factors Influencing Option Values: Calls 因素 Factor 对价值的作用 Effect on value 股票价格 Stock price Increases 执行价格 EXercise price decreases 股票价格的波动 Volatility of stock price increases 到期 Time to expiration ncreases 利息率 nterest rate Increases 股利 Dividend rate decreases 21-521-5 影响看涨期权价值的因素 Factors Influencing Option Values: Calls 因素 Factor 对价值的作用 Effect on value 股票价格 Stock price increases 执行价格 Exercise price decreases 股票价格的波动Volatility of stock price increases 到期 Time to expiration increases 利息率 Interest rate increases 股利 Dividend Rate decreases