Markets & trading
An option is a time-limited contract giving its buyer a right, but not an obligation, under defined terms. Calls relate to buying the underlying; puts relate to selling it.
Make it click
A reservation holds a choice at stated terms until a deadline. The reservation fee is spent whether or not the choice becomes useful, while the provider carries the matching obligation.
Now put that into markets
An option specifies underlying, strike, expiry, contract size and exercise style. Buyers pay premium; sellers receive it and accept contingent obligations.
Value depends on underlying price, time, expected volatility, rates and distributions. Market value before expiry includes both intrinsic and remaining time value.
Understand payoff, maximum loss, assignment, liquidity and contract specification before interpreting a premium. Compare strategies as combined contracts, not labels.
Leverage and time decay can produce rapid or total premium loss, while uncovered sellers can face very large losses. Simple payoff diagrams omit execution and path risk.
Takeaway
