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jt compher 保密 ID: 70061835
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    jt compher 参与了投票
    $苹果 (AAPL.US)$ “时间飞逝”活动定于太平洋时间9月15日上午10点/东部时间下午1点,预计公司将推出一系列新设备,包括新款Apple Watch和iPad,以及一款头戴式耳机,这是该科技巨头的首次。
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    苹果9月15日活动中会有哪些新内容?
    jt compher 评论了
    when buying options there's a few things to consider and one of the most important factors is the Delta
    What Is Delta?
    Delta is the ratio that compares the change in the price of an asset, to the corresponding change in the price of its stock. For example, if a stock option has a delta value of 0.65, this means that if the underlying stock increases in price by $1 per share, the option on it will rise by $0.65 per share, all else being equal. Delta values can be positive or negative depending on the type of option. For example, the delta for a call option always ranges from 0 to 1 because as the underlying asset increases in price, call options increase in price. put option  deltas always range from -1 to 0 because as the underlying security increases, the value of put options decrease
    Delta values can be positive or negative depending on the type of option. For example, the delta f
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