美股期权最小交易单位
期权以「张」为合约单位，最小交易单位通常为 1 张。
一般情况下，1 张期权合约对应 100 股标的股票；若发生公司行动（拆合股、特别股息等），合约乘数可能调整为非 100 股，请以合约详情及 App 显示为准。
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uSmart Securities Limited is a corporation licensed by the Hong Kong Securities and Futures Commission (CE No.: BJA907) and is authorised to carry on Type 1 (Dealing in Securities), Type 2 (Dealing in Futures Contracts), Type 4 (Advising on Securities), Type 5 (Advising on Futures Contracts), Type 6 (Advising on Corporate Finance) and Type 9 (Asset Management) regulated activities.
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uSmart Securities Limited is a corporation licensed by the Hong Kong Securities and Futures Commission (CE No.: BJA907) and is authorised to carry on Type 1 (Dealing in Securities), Type 2 (Dealing in Futures Contracts), Type 4 (Advising on Securities), Type 5 (Advising on Futures Contracts), Type 6 (Advising on Corporate Finance) and Type 9 (Asset Management) regulated activities.
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