Call option

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Profits from buying a call. Long call option.svg
Profits from buying a call.
Profits from writing a call. Short call option.svg
Profits from writing a call.

In finance, a call option, often simply labeled a "call", is a contract between the buyer and the seller of the call option to exchange a security at a set price. [1] The buyer of the call option has the right, but not the obligation, to buy an agreed quantity of a particular commodity or financial instrument (the underlying) from the seller of the option at or before a certain time (the expiration date) for a certain price (the strike price). This effectively gives the buyer a long position in the given asset. [2] The seller (or "writer") is obliged to sell the commodity or financial instrument to the buyer if the buyer so decides. This effectively gives the seller a short position in the given asset. The buyer pays a fee (called a premium) for this right. The term "call" comes from the fact that the owner has the right to "call the stock away" from the seller.

Contents

Price of options

Option values vary with the value of the underlying instrument over time. The price of the call contract must act as a proxy response for the valuation of:

The call contract price generally will be higher when the contract has more time to expire (except in cases when a significant dividend is present) and when the underlying financial instrument shows more volatility or other unpredictability. Determining this value is one of the central functions of financial mathematics. The most common method used is the Black–Scholes model, which provides an estimate of the price of European-style options. [4]

See also

Related Research Articles

In finance, a derivative is a contract that derives its value from the performance of an underlying entity. This underlying entity can be an asset, index, currency, or interest rate, and is often simply called the underlying. Derivatives can be used for a number of purposes, including insuring against price movements (hedging), increasing exposure to price movements for speculation, or getting access to otherwise hard-to-trade assets or markets.

<span class="mw-page-title-main">Contango</span> Situation when futures prices are above the expected spot price at maturity

Contango is a situation in which the futures price of a commodity is higher than the expected spot price of the contract at maturity. In a contango situation, arbitrageurs or speculators are "willing to pay more [now] for a commodity [to be received] at some point in the future than the actual expected price of the commodity [at that future point]. This may be due to people's desire to pay a premium to have the commodity in the future rather than paying the costs of storage and carry costs of buying the commodity today." On the other side of the trade, hedgers are happy to sell futures contracts and accept the higher-than-expected returns. A contango market is also known as a normal market or carrying-cost market.

In finance, a put or put option is a derivative instrument in financial markets that gives the holder the right to sell an asset, at a specified price, by a specified date to the writer of the put. The purchase of a put option is interpreted as a negative sentiment about the future value of the underlying stock. The term "put" comes from the fact that the owner has the right to "put up for sale" the stock or index.

<span class="mw-page-title-main">Warrant (finance)</span> Security that entitles the holder to buy stock

In finance, a warrant is a security that entitles the holder to buy or sell stock, typically the stock of the issuing company, at a fixed price called the exercise price.

In finance, an interest rate cap is a type of interest rate derivative in which the buyer receives payments at the end of each period in which the interest rate exceeds the agreed strike price. An example of a cap would be an agreement to receive a payment for each month the LIBOR rate exceeds 2.5%.

In finance, the style or family of an option is the class into which the option falls, usually defined by the dates on which the option may be exercised. The vast majority of options are either European or American (style) options. These options—as well as others where the payoff is calculated similarly—are referred to as "vanilla options". Options where the payoff is calculated differently are categorized as "exotic options". Exotic options can pose challenging problems in valuation and hedging.

<span class="mw-page-title-main">Strike price</span> Options fixed price to exercise it on the expiration date

In finance, the strike price of an option is a fixed price at which the owner of the option can buy, or sell, the underlying security or commodity. The strike price may be set by reference to the spot price, which is the market price of the underlying security or commodity on the day an option is taken out. Alternatively, the strike price may be fixed at a discount or premium.

In finance, a futures contract is a standardized legal contract to buy or sell something at a predetermined price for delivery at a specified time in the future, between parties not yet known to each other. The item transacted is usually a commodity or financial instrument. The predetermined price of the contract is known as the forward price or delivery price. The specified time in the future when delivery and payment occur is known as the delivery date. Because it derives its value from the value of the underlying asset, a futures contract is a derivative.

In finance, moneyness is the relative position of the current price of an underlying asset with respect to the strike price of a derivative, most commonly a call option or a put option. Moneyness is firstly a three-fold classification:

A hedge is an investment position intended to offset potential losses or gains that may be incurred by a companion investment. A hedge can be constructed from many types of financial instruments, including stocks, exchange-traded funds, insurance, forward contracts, swaps, options, gambles, many types of over-the-counter and derivative products, and futures contracts.

A swaption is an option granting its owner the right but not the obligation to enter into an underlying swap. Although options can be traded on a variety of swaps, the term "swaption" typically refers to options on interest rate swaps.

In finance, the time value (TV) of an option is the premium a rational investor would pay over its current exercise value, based on the probability it will increase in value before expiry. For an American option this value is always greater than zero in a fair market, thus an option is always worth more than its current exercise value. As an option can be thought of as 'price insurance', TV can be thought of as the risk premium the option seller charges the buyer—the higher the expected risk, the higher the premium. Conversely, TV can be thought of as the price an investor is willing to pay for potential upside.

Rational pricing is the assumption in financial economics that asset prices – and hence asset pricing models – will reflect the arbitrage-free price of the asset as any deviation from this price will be "arbitraged away". This assumption is useful in pricing fixed income securities, particularly bonds, and is fundamental to the pricing of derivative instruments.

In finance, a long position in a financial instrument means the holder of the position owns a positive amount of the instrument. The holder of the position has the expectation that the financial instrument will increase in value. This is known as a bullish position. The term "long position" is often used in context of buying options contracts.

In finance, a price (premium) is paid or received for purchasing or selling options. This article discusses the calculation of this premium in general. For further detail, see: Mathematical finance § Derivatives pricing: the Q world for discussion of the mathematics; Financial engineering for the implementation; as well as Financial modeling § Quantitative finance generally.

In finance, a collar is an option strategy that limits the range of possible positive or negative returns on an underlying to a specific range. A collar strategy is used as one of the ways to hedge against possible losses and it represents long put options financed with short call options. The collar combines the strategies of the protective put and the covered call.

Option strategies are the simultaneous, and often mixed, buying or selling of one or more options that differ in one or more of the options' variables. Call options, simply known as Calls, give the buyer a right to buy a particular stock at that option's strike price. Opposite to that are Put options, simply known as Puts, which give the buyer the right to sell a particular stock at the option's strike price. This is often done to gain exposure to a specific type of opportunity or risk while eliminating other risks as part of a trading strategy. A very straightforward strategy might simply be the buying or selling of a single option; however, option strategies often refer to a combination of simultaneous buying and or selling of options.

The backspread is the converse strategy to the ratio spread and is also known as reverse ratio spread. Using calls, a bullish strategy known as the call backspread can be constructed and with puts, a strategy known as the put backspread can be constructed.

In finance, an option is a contract which conveys to its owner, the holder, the right, but not the obligation, to buy or sell a specific quantity of an underlying asset or instrument at a specified strike price on or before a specified date, depending on the style of the option.

<span class="mw-page-title-main">Sharia and securities trading</span>

Sharia and securities trading is the impact of conventional financial markets activity for those following the islamic religion and particularly sharia law. Sharia practices ban riba and involvement in haram. It also forbids gambling (maisir) and excessive risk. This, however has not stopped some in Islamic finance industry from using some of these instruments and activities, but their permissibility is a subject of "heated debate" within the religion.

References

  1. O'Sullivan, Arthur; Sheffrin, Steven M. (2003). Economics: Principles in Action . Upper Saddle River, New Jersey 07458: Pearson Prentice Hall. p.  288. ISBN   0-13-063085-3.{{cite book}}: CS1 maint: location (link)
  2. Natenberg, Sheldon (1994). Option volatility and pricing strategies : advanced trading techniques for professionals ([2nd ed., updated and exp.] ed.). New York: McGraw-Hill. ISBN   0-585-13166-X. OCLC   44962925.
  3. Hull, John (2017). Options, Futures, and Other Derivatives 10th Edition. Pearson. pp. 231–246. ISBN   978-0134472089.
  4. Fernandes, Nuno (2014). Finance for Executives: A Practical Guide for Managers. NPV Publishing. p. 313. ISBN   978-9899885400.

5.اختیار معامله [1] بورس کالج

  1. "دانشکده بورس | آموزش بورس به صورت کاملا تخصصی و حرفه‌ ای". boursecollege.com (in Persian). 2018-11-09. Retrieved 2025-01-05.