When a market is dominated by a little figure of big companies, it is referred as an oligopoly. The exact figure of companies that is needed to make oligopoly is in scope between 2 and 9, but the type of oligopoly that includes two companies is referred as duopoly.

Even thought, pull offing company under other market state of affairss like monopoly conveying its ain hazards and troubles, from the direction place, oligopoly is considered the most ambitious to pull off and manage because the actions of the other companies straight affects the determinations that director brings. Complexity of oligopoly is held in dependance between determination that companies bring and in which determination brought by one company straight affects the determinations brought by other companies.

Decisions that director brings that consider monetary values, must be exhaustively analyzed because of the consequence on other companies. It can be explained in a manner that if one company lowers their monetary values and the other companies do non, the company that have lower the monetary values will hold an addition in gross revenues, on the other manus if the other companies lower the monetary values besides the gross revenues will non be affected.

The illustration in chart 1 shows the illustration what will go on with the gross revenues if the competition does non and does lower the monetary values.

PriceChart 1

Situation 1

Measure

Sold

Situation 2

In state of affairs 1 if the company lowers the monetary values and the competition does non fit the monetary values, the measure of goods sold will lift and that will impact the net income in a certain period of clip.

In state of affairs 2 if the company lowers the monetary values and the competition lucifers those lower monetary values at that place will non be a alteration in measure of goods sold and net income.

In oligopoly there are four different types known as Sweezy oligopoly, Cournot oligopoly, Stackelberg and Bertrand oligopoly.

The Sweezy oligopoly consists of a given of actions that will other companies take if one company lowers or raises the monetary values which will finally hold an consequence on measure of the goods distributed. Features that a certain industry must hold to be identified as an Sweezy oligopoly are that there are no companies in the market that are functioning many consumers, the companies produce differentiated merchandises, each company believes challengers will cut their monetary values in response to a monetary value decrease but will non raise their monetary values in response to monetary value addition and barriers to entry exists ( Baye 318 ) . In this sort of oligopoly competitory companies expect one company to either rise or lower the monetary values but they will in most instances instead follow the monetary value decrease than monetary value growing. There are certain defects in Sweezy`s oligopoly and the most of import is the 1 that this theoretical account does non bespeak how the competitory companies set the starting monetary value. Even though, Sweezy oligopoly gives a position to strategic dealingss among the companies and management`s anticipations for competition`s future actions that consider monetary value alterations. The existent universe illustration of Sweezy oligopoly can be shown in pharmaceutical industry. In pharmaceutical industry there are a little figure of companies that produces distinguished merchandises. Every company is certain that their competition will accommodate to a monetary value lessening. Some companies produce a new drug that are protected by a patent and in a short term that is considered as monopoly but with an termination of that patent, other companies produce generic drug which lower the monetary value of original one, so all of the companies set a similar monetary value as competition, and they observe what moves will competition make in order to catch a bigger piece of the market.

. The Cournot oligopoly does non turn to the issue of monetary values, in this type of oligopoly the competitory companies must make up one’s mind the measure of end product. Cournot oligopoly is when there are few houses in the market functioning many consumers, when the houses produce either differentiated or homogenous merchandises, when each house believes challengers will keep their end product constant if it changes its end product and barriers to entry exist ( Baye 320 ) . Directors in Cournot theoretical account bring picks that will impact the entire end product and they hope that their picks will non impact the picks of the competition. In order to use Cournot oligopoly theoretical account, the merchandises on a marker must be either the same or segregated. A state of affairs in which neither company has an inducement to alter its end product given the other companies end product is called Cournot equilibrium ( Baye 322 ) . The existent universe illustrations for Cournot oligopoly are the OPEC states in which those states decides how much oil they will bring forth because the sum of oil produced affects the monetary value of oil in the market.

In Stackelberg oligopoly among the competitory companies there is a company that brings the first determination for addition or increase in end product. After the determination is being made other companies follow the illustration of the leader company and adjust their end products to maximise their net incomes. Features needed for a certain industry to be identified as Stackelberg oligopoly are that there must be a few companies functioning many consumers, companies produce either distinguished or similar merchandises, a individual company chooses end product before all other companies choose their end products, all other houses take as given the end product of the leader and take end products that maximize net incomes given the leader`s end product and barriers to entry exist ( Baye 332 ) .

In Bertrant oligopoly companies sell wholly the same merchandises. The certain features that identifies Bertrand oligopoly are when a few houses in the market functioning many consumers, the houses produce indistinguishable merchandises at changeless fringy cost, houses engage in monetary value competition and respond optimally to monetary values charged by rivals, consumers have perfect information and there are no dealing cost and barriers to entry exist ( Baye 336 ) . Bertrand oligopoly generates zero economic net income and it acts the same as absolutely competitory market

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