as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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when can we exercice an option?
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owners of american-style options may exercise at any time before the   option expires, while owners of european-style options may exercise   only at expiration. read more: american vs. european options
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