time expiration

基本解释

The lease manager periodically examines the leases for time expiration.
租约管理器定期检查租约是否到期。
Also notice the CACHE_FEED_TIME expiration value being used to expire data from the cache.
另请注意，使用了 CACHE_FEED_TIME 到期值使缓存中的数据过期。
S&P 500 futures rose 4.1 points and were above fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract.
标准普尔500期货合约升4.1点并高于公允值（公允值乃是使用包括账户利率、股息和合同终止时间对定价进行评估的方法）。

With very little time until expiration, front-month options activity is especially speculative.
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In this scenario the trader is happy to pocket the rich premium available on the options given the length of time to expiration and increase in implied volatility on top of the sharp rise in the price of the underlying.
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If you purchase an option, you have the right to exercise it (with an American style option as most equities are) at any time in the expiration cycle.
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