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In finance, a put or put option is a derivative instrument in financial markets that gives the holder (i.e. the purchaser of the put option) the right to sell an asset (the underlying), at a specified price (the strike), by (or on) a specified date (the expiry or maturity) to the writer (i.e. seller) of the put.
Put option: A put option gives its buyer the right, but not the obligation, to sell a stock at the strike price prior to the expiration date. When you buy a call or put option, you pay a premium ...
A call option is in the money when the strike price is below the spot price. A put option is in the money when the strike price is above the spot price. With an "in the money" call stock option, the current share price is greater than the strike price so exercising the option will give the owner of that option a profit.
These price bounds are a specific example of good–deal bounds, and are in fact the greatest extremes for good–deal bounds. [1] The most frequent nontrivial example of no-arbitrage bounds is put–call parity for option prices. In incomplete markets, the bounds are given by the subhedging and superhedging prices. [1] [2]
Example: Stock X is trading for $20 per share, and a put with a strike price of $20 and expiration in four months is trading at $1. The contract costs $100, or one contract * $1 * 100 shares ...
Selling a Bearish option is also another type of strategy that gives the trader a "credit". This does require a margin account. The most bearish of options trading strategies is the simple put buying or selling strategy utilized by most options traders. The market can make steep downward moves.
At each final node of the tree—i.e. at expiration of the option—the option value is simply its intrinsic, or exercise, value: Max [ (S n − K), 0 ], for a call option Max [ (K − S n), 0 ], for a put option, Where K is the strike price and is the spot price of the underlying asset at the n th period.
The term "Greenspan put" is a play on the term put option, which is a financial instrument that creates a contractual obligation giving its holder the right to sell an asset at a particular price to a counterparty, regardless of the prevailing market price of the asset, thus providing a measure of insurance to the holder of the put against falls in the price of the asset.