Oligopoly Market

Price War in Oligopoly Market

Oligopoly is an imperfectly competitive market form, where there are few sellers and a large number of buyers, and the product may be homogeneous or differentiated. Since there are few sellers, so there arises Conscious Rivalry among the firms. That is, if a firm takes any action or strategy, then it influences the act or strategy of its rival firm. This mutual interdependence leads to strategic interactions between the firms.

     When the firm’s strategies on their own without cooperating with its rival firms, or without any explicit or implicit agreement, then this leads to non-collusive oligopoly, producing ‘price wars’ among each other.

Case I: When the conjectural variation is zero, i.e., when a firm changes its price, it considers the price of the rival firm remains unchanged. Here, the firms’ objective is to maximize profit. The profit functions can be written in a duopoly case as,

                 Π1 = Π1(P1,P2)  and Π2 = Π2(P1,P2

Suppose the first firm assumes P2 as constant and selects P1 in such a manner that its profit maximizes. In this way, we get different combinations of P1 and P2, which gives the price reaction curves of the firms R1 and R2.

If the first seller’s price is P1, then firm two assumes that firm one will maintain P1 price, and so to maximize its profit, he chooses P2. Again, corresponding to P2, the first seller fixes his price level at P1‘, to maximize his profit. In response to this, the second seller fixes his price at P2‘ and thus, we see that with the advent of time, the price level approaches the equilibrium value E at P1* and P2*.

Case II: When conjectural variation is non zero, there arises the problem of price leadership. Naturally, the leader gets some advantage, as it sophisticatedly incorporates its rival’s reaction function and accordingly maximizes his profit. In this process of becoming price leaders, both the firms end up earning lesser profit. Because each of them is stuck to the assumption that other’s behavior is governed by his reaction function, but in fact, neither of the reaction function is obeyed. As a result, both the sellers lose in this non-cooperative strategy, and a price war is inevitable. 

        The fact that the leader gains and the follower lose has the possibility that both the sellers will aspire to be leaders. If this happens, we get disequilibrium where both the sellers land into much worse positions. Considering the following pay-off matrix, the strategy ‘Leader’ is the dominant strategy for both the sellers, but as a result, they are worse off than the (Follower, Follower) strategy.

1st Sellers’ Strategy2nd Seller’s Strategy

This act of price leadership, leading to a price war, ends when one of the firms surrenders and agrees to act as a follower, or a collusive agreement is reached with both the firms.

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homework help for Economics Notes


Do you sense any alignment between the Indian monetary policy and the US Central Bank policy? Substantiate the same.


Monetary policy, especially in large industrial countries with open capital markets shapes global capital flows. Many such countries particularly following zero rate policy results in capital flows eventually finding homes in places like India, and emerging economies. Business cycles in the US, other advanced economies (AEs), and emerging market and developing economies (EMDEs) have been highly synchronous (Figure below). This shows the extent to which global trade and financial linkages of the US economy with the rest of the world at the same time these global shocks drive common cyclical fluctuations.  Other countries tend to be in the same business cycle phase as the US roughly 80% of the time. Although it cannot and an easy task to establish empirically whether the US economy leads the business and financial cycle turning points in other economies, recent research shows that the US seems to influence the timing and duration of recessions in many major economies (Francis et al. 2015).

The figure below shows the correlation between the US and other economies of the world.

Monetary policy, especially in large industrial countries with open capital markets shapes global capital flows. Many such countries particularly following zero rate policy results in capital flows eventually finding homes in places like India, and emerging economies. Business cycles in the US, other advanced economies (AEs), and emerging market and developing economies (EMDEs) have been highly synchronous (Figure below). This shows the extent to which global trade and financial linkages of the US economy with the rest of the world at the same time these global shocks drive common cyclical fluctuations.

Other countries tend to be within the same variation section because of the US roughly eightieth of the time. Although it cannot and an easy task to establish empirically whether the US economy leads the business and financial cycle turning points in other economies, recent research shows that the US seems to influence the timing and duration of recessions in many major economies (Francis et al. 2015). The figure shows the high positive correlation of the US Business Cycle with other Economics in the world.

Since 2008, after the financial crisis, the US followed quantitative easing and zero-interest framework. This led investors from across the world to emerging countries like India for higher returns with higher risks. Institutional investors in the US and other developed economies deploy trillions of dollars in various financial instruments around the world. Such as the US as well as international equity markets, US along with other international bond markets, US and other countries’ government bonds, real estate, venture capital, commodities, and private equity, derivatives, etc. These institutional investors have some annual target rate of return which they need to achieve. For instance, a public pension fund may seek annual return of a three-to-four percent, five-to-eight percent may be targeted by an endowment, whereas a hedge fund might target 15 to 20 percent. Thus they start looking for higher returns outside their countries in the regime of zero rate policy thus increased return means increased risk.

Lower interest rate and quantitative easing lead to zero interest rate policy in the US after the 2008 crisis. This means that bonds and other financial instruments in the US were less attractive for short term investors. They will start looking for an option outside the US i.e. into other emerging economies like India where there is higher return with higher risk. This lead to huge inflow of FDI in India in 2014 and ahead. The country surpassed its earlier records in terms of FDI and even the stable government and its initiative make it an attractive destination for institutional investors.

Soon when the US was released that Zero rate policy helped them to make the economy stable, control deflation and reached desired inflation rate, unemployment went down than in 2013 amid form mounting uncertainty about global economic prospects, increasing oil prices, growing political and economic tensions in the euro area, and strong monetary policy responses the US hinted to increase it interest rate, though there’s been some fallout from these financial market developments, none has threatened financial stability. This triggered substantial amount of credit to flow into bond markets through mutual funds and ETFs; Some rise in dollar interest rates and the dollar exchange rate is to be expected as U.S. monetary policy firms; so higher interest and exchange rates are ways in which tighter policy is transmitted to the economy to restrain early inflation pressure.

But an unexpectedly sharp rise in rates or increase in volatility could reveal weaknesses and mismatches among borrowers that have not been anticipated by investors. And the effects could be especially felt in emerging market economies like India, which had been the recipient of so much of the flows seeking higher yields.

Now From 2013, the Fed continues to implement quantitative tightening and the large issuance of government paper by the US Treasury as a result of the Trump administration’s fiscal policies. In response, RBI raised its repo rate by 25 basis points to 6.25 percent. The increased rate is a response not only to the risks to the inflation target that have emerged recently but also the risk of capital exiting emerging market economies. Institute of International Finance data shows that in May a combined US$12.3 billion of outflows in bonds and stocks in one month. With such a high scale of capital outflow, it’s easy to see why countries such as India and Indonesia, as well as others such as the Philippines and Turkey, have had to hike domestic rates recently.

Capital outflow from emerging economies, as data from Thomson Reuters, shows that capital is flowing to US-based money market funds which saw inflows of nearly US$34.9 billion from investors worldwide were drawn to the mixture of upper US yields and perceived lower risk.

In addition, higher interest rates in the US put pressure on emerging market economies to increase their interest rates to save and secure their investment inflows. The monetary tightening policy of RBI in response to a hike in interest rate by the US was inevitable. Thus RBI Hiked the policy rate by 25 basis points to 6.25%. This was the first hike by RBI since 2014. This hike in the policy rate will restrict some outflows and reduce the pressure on the INR to depreciate. Though the reduction in rates by RBI may reduce inflation in the Indian economy as money will become more expensive to borrow, this can also result in a slow economic activity and hinder investment activity.


Analyze the impact of the Federal Reserve Bank rate on the Indian economy.


Increase in interest rate by Fed, which means it will create pressure on RBI to increase its policy rate that could result in fewer jobs in India; a decrease in economic activity will lead to companies refraining from hiring new workers. Fed rate hike can have short-term implications on the Indian financial market, but RBI’s monetary policy tightening will not have a favorable effect on the Indian economy.

US is following quantitative easing and zero-interest framework from 2008 i.e. from the time of global financial crisis till 2014, after which the US Fed has raised its benchmark short-term interest rate for the seventh time, and the second time in 2018, by 25 basis points to a range of 1.75-2%. As the US economy seems to be stable and its objective well achieved—the inflation rate of 2.9% in May 2018 was higher than the targeted rate of 2% and a lowest unemployment rate of 3.8% in the last two decades. These recent hikes and further expected hikes will have major implications for India and emerging market economies as this will increase liability on dollar-denominated debt, capital flows, exchange rate appreciation, and inflation.

The hike is expected to be followed by other developed countries that have been following zero-rate policies such as Japan and other European countries. This will lead to a further outflow of funds which will weaken the INR against the US dollar, moreover, the increase in US government securities rates will put pressure on India and other emerging economies’ government bond yields. The equity investment will also route out from emerging economies towards the US market as the hike and better economic conditions in the US will boost the confidence of investors. The Reserve Bank of India (RBI) data shows, the sharp decline in net portfolio investment to India after the hike in March 2018. In fact, the net portfolio outflow is $3,133 million versus the net portfolio inflow of $1,159 million between March and April 2018.

Current account deficit—increased from 0.6% of GDP in FY2017 to 1.9% in FY2018 due to the slowdown of short-term capital inflows which will put pressure on INR. INR had been already depreciated around five-hitter since the last Fed’s hike in March. Weakling rupees will lower the rate of return which will make Indian equity less attractive for foreign investors.

A weaker rupee will increase the import bill and inflation. Thought Export can be promoted under these circumstances to counter the negative effect. But this may not be enough as we have large import bills when capered to our exports. India’s carries it trade majorly in the dollar, either a stronger dollar or a weaker rupee can help reduce India’s trade deficit.


Assignment help Economics Notes


Analyze the change in oil prices in the last one year and its impact on the Balance of payment of the country.


Oil is one of the most major sources of energy which contribute 27.3% of global primary energy demand. Oil is a limited resource and will not last forever. In 2015, oil reserve to production ratio was at 50.7 which means if oil continued to produce at this rate, it would last about 51 years. Thus scientists are working hard to explore alternate sources of energy. Besides, those geoscientists are busy finding out new sources of oil and exploring unexplored reserves. Tight oil and shale oil are becoming techno-commercially to produce and market. In recent times, unconventional oil and gas resources significantly impacted the dynamics of global oil & gas trade. In fact, these unconventional oil resources have increased the supply of oil in the global market which resulted in a fall in global oil prices. Moreover, the OPEC liberalized its high price policy by cutting the production significantly against its prior policy of producing an artificial shortage of oil in the global market to increase the price. The graph below is showing how the high oil price in 2014 fell significantly at the end of 2014.

The figure below shows International Oil prices from Jan 2014 to Aug 2018

Lower oil prices shrank India’s oil import bill when the oil prices fall from $110 per barrel to less than $45 per barrel in January 2015. In December 2014, oil imports fell 29% to $9.9 billion from $13.9 billion as compared to the same month of 2013. At this time there was slower growth in gold imports, helped India to lower its import bill and narrow its trade deficit in the month.

The fall in import bill in 9 months in by 4.78% to $33.9 billion, mainly because of lower oil imports, but on the other hand, exports dropped 3.77% to $25.3 billion. As the fall in imports was greater than the fall in export, it narrowed the trade deficit to $9.4 billion from $10.1 billion a year ago. The fall in oil prices will help the government to lower its subsidy burden as well as provide some relief to the external sector by keeping the current account deficit in check and hence ease pressure on the rupee. More correction in crude oil prices will improve India’s current account balance.

The figure bellows shows the shrank in import bill due to the fall in oil prices in 2014.

Recently the plummeting rupee and increasing fuel prices due to global factors set to weakling already weekend currency, widen current account deficit and affect its growth outlook. Rebounding oil prices after huge fall from 2014 in combination with India’s unrelenting demand for oil will push up oil imports and widen its current account deficit that measures the flow of goods, services, and investments. The increasing deficit will further weaken rupee, as more imports mean the country will need to buy more foreign currencies to meet its needs. This challenging global environment has made the Reserve Bank of India (RBI) intervene aggressively this year to contain rupee depreciation and also the drawdown in foreign reserves has been significant.

India’s is a country that heavily relies on imported oil and gas, the rising world oil prices have significantly inflated the oil import bill. Due to this India’s trade position deteriorating, with July’s trade deficit hitting a five year high. Oil prices have shot up this year, reaching $80 a barrel in May for the first time since 2014. The OPEC-led output cut, falling Venezuelan and Libyan output, as well as by an imminent drop in Iranian exports as U.S. sanctions return in November this year boosted the oil price to the highest. It is being speculated that the oil import bill in the fiscal year 2019 could spike above $114 billion. Oil imports were about $88 billion between 2017 and 2018 which is higher than the previous year’s cost of $70 billion.

India needs to bring its oil demand down that will lower the oil imports; this will help India to make growth more resilient. According to a report, India’s oil demand will increase to 4.4% annually in the next ten years, compared to 3.7 per year in the last 10 years. This rising oil imports can hit India’s gross domestic product badly in the long term.


Also, analyze its impact on your company.


Altran Technologies SA, a technology consultant main business areas are as follows:

  • Automotive industry – Due to continuous increase in oil prices and limited availability of oil resources the company is increasing the budget development of autonomous and connected vehicles and tackling the related safety and security issues; environmental issues (energy efficiency, electric vehicle) and development of so-called “green” mobility; and search for new mobility models.
  • Aeronautics – It has also increased its R&D in developing fuel-efficient aircraft and align its properties according to the Industry 4.0 norms.
  • Space, Defense, and Naval – This sector needs huge energy resources that are provided by oil and increasing oil prices to have a significant impact on its cost sheet.
  • Energy – In the oil and gas segment the increase in the price of the oil help them to increase their top line but this might now be a permanent solution as there is regular research going on developing alternative and unconventional energy resources such as sail oil etc. 
  • Industry and electronics – n the electronics and semi-conductors segment, growth should be driven by the search for electronic components that are more rapid, miniaturized, mobile and low in energy consumption, on the one hand, and by the development of embedded systems, particularly for the automotive industry, and connectivity with the Internet of Things (IoT), on the other hand.

Thus we can see Altran Group has high exposure to oil and gas prices as its business is concerned. The effect of high oil prices can be seen in the basic financial ratios of the company given below.

The figure below show profitability ratio of the company for last 5 year.

We can see hoe the Profitability ratio has gone up from 2014 to 2016, but it’s coming down henceforth. This is basically because the company was able to bring its operating expenses down when the oil prices were going down but after 2017 when oil prices started going up, it started hitting the profits of the company.

Oil prices can hit the company in two ways, in the automotive industry, for instance, the oil is a complimentary product to cars, the demand for which comes down as in the reign of high oil prices the consumers postpone their purchases. In can of the energy sector, the product itself is oil and an increase in the price may increase the revenue of the company but it can also drop the overall demand on the flip side. In a heavy industry where there is a high need for power for which oil can be the primary source of energy, oil being at a higher price will increase the cost to the company and that will pull down the profits of the company.


Micro Economics Notes

Technology – Processes a firm uses to turn inputs into goods and services

Technology depends on – the skill of its managers, training of its workers, speed and efficiency of machinery/equipment

Technological change – a change in the ability of a firm to produce a different level of output with a given quantity of inputs

The input requirement set is the set of all input bundles required to produce at least a given level of output.

(y,-x) Net output bundle where –x is input

Y is a set of all technological production plan i.e. firm’s production possibility set.

V(y) Input requirement set.

Rn is a production plan

The isoquant gives all input bundles that produce exactly y units of output. In other words, an isoquant is the combination of all inputs that produce the same level of output i.e., y.


Y(K) is production possibly set when capital is fixed

Y is output

L is labor

K is capital

A production function relates quantities of physical output of a production process to quantities of physical inputs or refers to the technological relation between physical inputs and outputs of the goods.

The production function for a firm which has only one output can be defined as

With one combination of input (x), we can get the maximum possible output (Y) then it is production function.

Transformation Function

A production plan y in Y is technologically efficient if there is no y’ in Y such that y’ y  and y’ y  ; in other words, a production plan is efficient if there is no other way to produce more output with the same inputs or to produce the same output with fewer inputs.

The set of technologically efficient production plans can be described by a transformation function:

The Cobb–Douglas production function is a particular functional form of the production function, widely used to represent the technological relationship between the amounts of two or more inputs (particularly physical capital and labor) and the amount of output that can be produced by those inputs. The Cobb–Douglas form was developed and tested against statistical evidence by Charles Cobb and Paul Douglas from 1927–1947.

  • Y = total production (the real value of all goods produced in a year or 365.25 days)
  • L = labor input (the total number of person-hours worked in a year or 365.25 days)
  • K = capital input (the real value of all machinery, equipment, and buildings)
  • A = total factor productivity and your usual depreciation by the utility in the day after
  • α and β are the output elasticity’s of capital and labor, respectively. These values are constants determined by available technology.

Sometimes the term has a more restricted meaning, requiring that the function display constant returns to scale, meaning that doubling the usage of capital K and labor L will also double output Y. This holds if

α + β = 1,


α + β < 1, returns to scale are decreasing,

and if

α + β > 1, returns to scale are increasing.

In economics, the Leontief production function or fixed proportions production function is a production function that implies the factors of production will be used in fixed (technologically pre-determined) proportions, as there is no substitutability between factors. It was named after Wassily Leontief and represents a limiting case of the constant elasticity of substitution production function.

For the simple case of a good that is produced with two inputs, the function is of the form

where q is the quantity of output produced, z1 and z2 are the utilized quantities of input 1 and input 2 respectively, and a and b are technologically determined constants.


The most straightforward way of describing production sets or input requirement sets is simply to list the feasible production plans.

The same Output can be produced using inputs 1 and 2, where it is possible by two technology (i.e. Combination of input) Tech 1, one unit of factor 1, 2 unit of factor 2. Tech 2, 2 unit of factor 1 and 1 unit of factor 2)

The marginal rate of technical substitution (MRTS) is the rate at which one factor must decrease so that the same level of productivity can be maintained when another factor is increased. The MRTS reflects the give-and-take between factors, such as capital and labor that allow a firm to maintain a constant output. MRTS differs from the marginal rate of substitution (MRS) because MRTS is focused on producer equilibrium and MRS is focused on consumer equilibrium.