Each day many investors anxiously watch the stock market to see if their shares have gone up or down. They may also speculate: buying if they think share prices are likely to go up; selling if they think their shares will fall. But what drives these expectations?
To some extent, people will look at real factors, such as company sales and profits or macroeconomic indicators, such as the rate of economic growth or changes in public-sector borrowing. But to a large extent people are trying to predict what other people will do: how other people will react to changes in various indicators.
John Maynard Keynes observed this phenomenon in Chapter 12 of his General Theory of Employment, Interest and Money of 1936. He likened this process of anticipating what other people will do to a newspaper beauty contest, popular at the time. In fact, behaviour of this kind has become known as a Keynesian beauty contest (see also).
Keynes wrote that:
professional investment may be likened to those newspaper competitions in which the competitors have to pick out the six prettiest faces from a hundred photographs, the prize being awarded to the competitor whose choice most nearly corresponds to the average preferences of the competitors as a whole; so that each competitor has to pick, not those faces which he himself finds prettiest, but those which he thinks likeliest to catch the fancy of the other competitors, all of whom are looking at the problem from the same point of view. It is not a case of choosing those which, to the best of one’s judgement, are really the prettiest, nor even those which average opinion genuinely thinks the prettiest. We have reached the third degree where we devote our intelligences to anticipating what average opinion expects the average opinion to be. And there are some, I believe, who practise the fourth, fifth and higher degrees.
When investors focus on people’s likely reactions, it can make markets very unstable. A relatively minor piece of news can cause people to buy or sell in anticipation that others will do the same and that others will realise this and do the same themselves. Markets can overshoot, until, when prices have got out of line with fundamentals, buying can turn into selling, or vice versa. Prices can then move rapidly in the other direction, again driven by what people think other people will do. Sometimes, markets can react to very trivial news indeed. As the New York Times article below states:
On days without much news, the market is simply reacting to itself. And because anxiety is running high, investors make quick, sometimes impulsive, responses to relatively minor events.
The rise of the machine
In recent years there is a new factor to account for growing stock market volatility. The Keynesian beauty contest is increasingly being played by computers. They are programmed to buy and sell when certain conditions are met. The hundreds of human traders of the past who packed trading floors of stock markets, have been largely replaced by just a few programmers, trained to adjust the algorithms of the computers their finance companies use as trading conditions change.
And these computers react in milliseconds to what other computers are doing, which in turn react to what others are doing. Markets can, as a result, suddenly soar or plummet, until the algorithms kick the market into reverse as computers sell over-priced stock or buy under-priced stock, which triggers other computers to do the same.
Robot trading is here to stay. The articles and podcast consider the implications of the ‘games’ they are playing – for savers, companies and the economy.
Articles
Questions
- Give some other examples of human behaviour which is in the form of a Keynesian beauty contest.
- Why may playing a Keynesian beauty contest lead to an undesirable Nash equilibrium?
- Does robot trading do anything other than simply increase the speed at which markets adjust?
- Can destabilising speculation continue indefinitely? Explain.
- Explain what is meant by ‘overshooting’? Why is overshooting likely to occur in stock markets and foreign exchange markets?
- In what ways does robot trading (a) benefit and (b) damage the interests of savers?
The European Parliament, Council and Commission have agreed on reform to the Common Agricultural Policy as part of the EU’s long-term budget settlement for 2014–20. The CAP accounts for some 38% of the EU’s budget and, over the years, has drawn considerable criticism for resulting in food mountains and support being biased towards large intensive farms.
As section 3.5 in Economics (8th ed) explains, the CAP has been through a number of reforms since the early 1990s. Prior to that, the main form of support was that of guaranteed minimum prices backed up, where necessary, by levies (tariffs) on imported food. Any surplus of production at the minimum price was bought by the relevant EU Intervention Board and either stored or exported at world prices. The effect of minimum prices is shown in the diagram.
Assume that the EU demand is DEU and that EU supply is SEU. Assume also that the world price is Pw. This will be the equilibrium price, since any shortage at Pw (i.e. b – a) will be imported at that price. Thus before intervention, EU demand is Qd1 and EU supply is Qs1 and imports are Qd1 – Qs1.
Now assume that the EU sets an intervention price of Pi. At this high price, there will be a surplus of d – e (i.e. Qs2 – Qd2). Assume for the moment that none of this surplus is exported. It will all, therefore, be bought by the appropriate Intervention Board. The cost to the EU of buying this surplus is shown by the total shaded area (edQs2Qd2: i.e. the surplus multiplied by the intervention price). Unless the food is thrown away, exported or otherwise disposed of, there will obviously then be the additional costs of storing this food: costs that were very high in some years as wine ‘lakes’ and grain and dairy ‘mountains’ built up. If, however, the surplus is sold on world markets at the world price Pw, this will earn the green area for the EU, leaving a net cost of just the pink area.
From 1992, there was a gradual move towards lowering intervention prices and paying farmers direct aid unrelated to current output. From 2004, the main form of support became these direct aid payments. Annual payments to each farm were based on the average support it had received over the three years from 2000 to 2002. At the same time, payments to large farms were gradually reduced, with 80 per cent of the money saved in each country being diverted to rural development. Payments were also made conditional on farmers making environmental improvements to their land.
A problem with this system is that farmers who had high average output in the years 2000–2 have been receiving the same large payments ever since, while farmers who had small yields in those years have received correspondingly small payments.
A proposal two years ago by Dacian Cioloş, the EU Commissioner for Agriculture, was for flat-rate payments per hectare. But objections were raised that this would benefit inefficient farmers who would receive the same as efficient ones. In the end a compromise agreement was reached which saw a capping of the amount of payment per hectare. The result is that the most intensive farmers will see a reduction in their payments by some 30% – a process that will happen gradually over the period 2014–19.
In addition it has been agreed that 30% of the direct aid payments will be conditional on farmers adopting various measures to protect the environment and wildlife.
Farmers will have to be ‘active’ producers to receive direct aid payments. This is designed to exclude businesses such as airports or sports clubs, some of which had been receiving support under the previous system.
It was also agreed to provide 25% extra support for five years to farmers under 35 in an attempt to attract more young farmers into agriculture. Other details of the settlement are given in the EU documents, videos and articles below.
Webcasts
The great shake-up of the Common Agricultural Policy EPP Group in the European Parliament (25/1/13)
Planned reforms of Common Agricultural Policy under fire BBC News, Roger Harrabin (24/6/13)
Mixed response to compromise CAP deal RTE News (26/6/13)
Farm reforms may not increase food production, warns MEP europeandyou, Diane Dodds MEP (26/6/13)
Articles
Big farms to see European subsidies slashed The Telegraph, Rowena Mason (26/6/13)
Common Agricultural Policy deal agreed at last RTE News, Damien O’Reilly (26/6/13)
CAP Reform: MEPs, Council and Commission strike deal FarmingUK (27/6/13)
EU agricultural overhaul puts onus on farmers to be green Financial Times, Joshua Chaffin (26/6/13)
CAP reform deal agreed in Brussels Farmers Guardian, Alistair Driver (26/6/13)
‘Bad for farmers and wildlife’ – CAP reform reaction Farmers Guardian, Alistair Driver (27/6/13)
EU documents
Political agreement on new direction for common agricultural policy Europa Press Release (26/6/13)
CAP Reform – an explanation of the main elements Europa Press Release (26/6/13)
Press release, 3249th Council meeting : Agriculture and Fisheries The Council of the European Union (25/6/13)
Questions
- Why will a system of agricultural support based solely on direct aid not result in any food mountains?
- Show in a diagram the effect of high minimum prices (plus import levies) on an agricultural product in which a country is not self-sufficient (and is still not made so by the high minimum price). How much will be imported before and after the intervention?
- What are the arguments for and against making direct aid payments based solely per hectare?
- Find out how sugar quotas have worked. What will be the effects of abolishing them by 2017?
- What ‘green’ measures are included in the agreement and how effective are they likely to be?
- Consider the arguments for and against removing all forms of support for agriculture in the EU.
- What are the effects of (a) price support and (b) direct aid payments unrelated to output for EU farmers on farmers in developing countries producing agricultural products in competition with those produced in the EU?
- Why may the environmental measures in the new agreement be seen as too weak?
Since the beginning of 2009, central banks around the world have operated an extremely loose monetary policy. Their interest rates have been close to zero (click here for a PowerPoint of the chart) and more than $20 trillion of extra money has been injected into the world economy through various programmes of quantitative easing.
The most recent example of loose monetary policy has been in Japan, where substantial quantitative easing has been the first of Japan’s three arrows to revive the economy (the other two being fiscal policy and supply-side policy).
One consequence of a rise in money supply has been the purchase of a range of financial assets, including shares, bonds and commodities. As a result, despite the sluggish or negative growth in most developed countries, stock markets have soared (see chart). From March 2009 to May 2013, the FTSE 100 rose by 91% and both the USA’s Dow Jones Industrial average and Germany’s DAX rose by 129%. Japan’s NIKKEI 225, while changing little from 2009 to 2012, rose by 78% from November 2012 to May 2013 (click here for a PowerPoint of the chart).
The US economy has been showing stronger growth in recent months and, as a result, the Fed has indicated that it may soon have to begin tightening monetary policy. It is not doing so yet, nor are other central banks, but the concern that this may happen in the medium term has been enough to persuade many investors that stock markets are likely to fall as money eventually becomes tighter. Given the high degree of speculation on stock markets, this has led to a large-scale selling of shares as investors try to ‘get ahead of the curve’.
From mid-May to mid-June, the FTSE 100 fell by 6.2%, the Dow Jones by 2.6%, the DAX by 4.5% and the NIKKEI by 15%. In some developing countries, the falls have been steeper as the cheap money that entered their economies in search of higher returns has been leaving. The falls in their stock markets have been accompanied by falls in their exchange rates.
The core of the problem is that most of the extra money that was created by central banks has been used for asset purchase, rather than in financing extra consumer expenditure or capital investment. If money is tightened, it is possible that not only will stock and bond markets fall, but the fragile recovery may be stifled. In other words, tighter money and higher interest rates may indeed affect the real economy, even though loose monetary policy and record low interest rates had only a very modest effect on the real economy.
This poses a very difficult question for central banks. If even the possibility of monetary tightening some time in the future has spooked markets and may rebound on the real economy, does that compel central banks to maintain their loose policy? If it does, will this create an even bigger adjustment problem in the future? Or could there be a ‘soft landing’, whereby real growth absorbs the extra money and gradually eases the inflationary pressure on asset markets?
Articles
How the Fed bosses all BBC News, Robert Peston (12/6/13)
The great reversal? Is the era of cheap money ending? BBC News, Linda Yueh (12/6/13)
The Great Reversal: Part II (volatility and the real economy) BBC News, Linda Yueh (14/6/13)
The end of the affair The Economist (15/6/13)
Out of favour The Economist, Buttonwood (8/6/13)
The Federal Reserve: Clearer, but less cuddly The Economist (22/6/13)
Global financial markets anxious to avoid many pitfalls of ‘political risk’ The Guardian, Heather Stewart (13/6/13)
Dow Falls Below 15,000; Retailers Add to Slump New York Times, (12/6/13)
Global market sell-off over stimulus fears The Telegraph, Rachel Cooper (13/6/13)
Nikkei sinks over 800 points, falls into bear market Globe and Mail (Canada), Lisa Twaronite (13/6/13)
Global shares drop, dollar slumps as rout gathers pace Reuters, Marc Jones (13/6/13)
The G8, the bond bubble and emerging threats BBC News, Stephanie Flanders (17/6/13)
Global monetary policy and the Fed: vive la difference BBC News, Stephanie Flanders (20/6/13)
The Federal Reserve’s dysfunctional relationship with the markets The Guardian, Heidi Moore (19/6/13)
Global stock markets in steep falls after Fed comment BBC News (20/6/13)
Federal Reserve’s QE withdrawal could signal real trouble ahead The Guardian, Nils Pratley (20/6/13)
Central banks told to head for exit Financial Times, Claire Jones (23/6/13)
Stimulating growth threatens stability, central banks warn The Guardian (23/6/13)
BIS Press Release and Report
Making the most of borrowed time: repair and reform the only way to growth, says BIS in 83rd Annual Report BIS Press Release (23/6/13)
83rd BIS Annual Report 2012/2013 Bank for International Settlements (23/6/13)
Data
Yahoo! Finance: see links for FTSE 100, DAX, Dow Jones, NIKKEI 225
Link to central bank websites Bank for International Settlements
Statistical Interactive Database – Interest & exchange rates data Bank of England
Questions
- Why have stock markets soared in recent years despite the lack of economic growth?
- What is meant by ‘overshooting’? Has overshooting taken place in stock markets (a) up to mid-May this year; (b) since mid-May? How would you establish whether overshooting has taken place?
- What role is speculation currently playing in stock markets? Would you describe this speculation as destabilising?
- What has been the impact of quantitative easing on (a) bond prices; (b) bond yields?
- Argue the case for and against central banks continuing with the policy of quantitative easing for the time being.
- Find out how much the Indian rupee and the Brazilian real have fallen in recent weeks. Explain your findings.
How important are emotions when you go shopping? Many people go shopping when they ‘need’ to buy something, whether it be a new outfit, food/drink, a new DVD release, a gift, etc. Others, of course, simply go window shopping, often with no intention of buying. However, everyone at some point has made a so-called ‘impulse’ purchase.
There is only one article below, which is from the BBC and draws on data released from the National Employment Savings Trust’s survey. This report suggests that British people spend over £1 billion every year on impulse buys – purchases that are not needed, were not intended and are often regretted once the ‘high’ has worn off. Often, it is the way in which a product is advertised or positioned that leads to a spontaneous purchase – seeing chocolate bars/sweets at the tills; a product offered at a huge discount advertised in the window of a shop; 2 for 1 purchases; points for loyalty etc. All of these and more are simple techniques used by retailers to encourage the impulse buy. As consumer psychologist, Dr. James Intriligator says:
Retailers have clever ways of manipulating customers to spend more but if you stick to your plans you can avoid being affected by their tactics.
In other cases, it’s simply the frame of mind of the consumer that can lead to such purchases, such as being hungry when you’re food shopping or having an event to attend the next day and deciding to go window shopping, despite already having something to wear! Dr. Intriligator continues, saying:
Your ability to resist and make rational choices is diminished when your glucose levels are down … When you get irrational, you fall back on trusted brands, which often leads you to spend more money … Later in the shop, you’re more tired and less likely to resist [impulse buys]
But are such purchases irrational? One of the key assumptions made by economists (at least in traditional economics) is that consumers are rational. This implies that consumers weigh up marginal costs and benefits when making a decision, such as deciding whether or not to purchase a product. But, do impulse buys move away from this rational consumer approach? Is buying something because it makes you happy in the short term a rational decision? Behavioural economics is a relatively new ‘branch’ of economics that takes a closer look at the decisions of consumers and what’s behind their behaviour. The following article from the BBC considers the impulse buy and leaves you to consider the question of irrational consumers.
Article
How to stop buying on impulse BBC Consumer (30/5/13)
Questions
- If the marginal benefit of purchasing a television outweighs the marginal cost, what is the rational response?
- Using the concept of marginal cost and benefit, illustrate them on a diagram and explain how equilibrium should be reached.
- What is behavioural economics?
- What are the key factors that can be used to explain impulse buys?
- How can framing help to explain irrational purchases?
- If a product is advertised at a significant discount, what figure for elasticity is it likely to have to encourage further purchases in-store?
- Is bulk-buying always a bad thing?
The strength of the housing market is often a key indicator of the strength of the economy. But, the opposite is also true: a weak economy often filters through to create a weak housing market. With the current weak economy, a boost in confidence is needed and signs suggest that the housing market is beginning to recover.
While the picture of the housing market today is nothing like the pre-crisis view, things are beginning to look up. For a couple of years now, house price inflation in the UK has been very close, if not equal to zero. However, data from Nationwide Building Society suggests that in May, house prices rose by 0.4% and the once stagnant year-on-year change in house prices rose to 1.1% (see chart below: click here for a PowerPoint of the chart). This is the fastest it has grown since the end of 2011.
Commentators have suggested that this latest data is an indication that ‘the market is gaining momentum’. A further confirmation of this rejuvenated market came with the data that property sales were 5% up each month this year, than the average monthly level for 2012. Despite this improvement, they still remain well below the pre-crisis levels.
Which factors have contributed to this tentative recovery? Most households require a mortgage to purchase a house and, given the central role that the housing market played in the financial crisis with companies engaging in excessive lending as a means of expanding their mortgage books, the availability of mortgages fell. The number of mortgage approvals is likely to feed through to affect the number of house sales and these have improved in the first few months of 2013. Interest rates offered by lenders have also fallen, making mortgages more affordable, thus boosting demand. Furthermore, government assistance is available to help individuals put a deposit down on a house, by offering them an equity loan. Further measures are due to come into effect in January 2014, with the aim of providing a further boost to the housing market. The chief economist at Nationwide, Robert Gardner said:
Widespread expectations that the economy will continue to recover gradually in the quarters ahead, that interest rates will remain low, and the ongoing impact of policy measures aimed at supporting the availability and lowering the cost of credit all provide reasons for optimism that activity will continue to gain momentum in the quarters ahead.
Despite the optimism, the situation is different across the UK, with some areas benefiting more than others. London and the South-East are driving this 0.4% rise, whereas other areas may be in need of further assistance to keep pace (see The UK housing market: good in parts).
Although these latest data may be a sign of things to come, it is also possible that things could go the opposite way. Incomes remain low; employment data are hardly encouraging; and the spectre of inflation is always there. Perhaps most importantly, consumer confidence remains fragile and until that gains momentum, uncertainty will continue to plague the UK marketplace. The following articles consider this issue.
Articles
UK house prices again up in May, says Nationwide The Guardian, Hilary Osborne (30/5/13)
Housing market could boost retail industry, Kingfisher says The Telegraph, Graham Ruddick (30/5/13)
UK house prices see modest rise, says Nationwide BBC News (30/5/13)
Hugh’s Review: House prices in spotlight BBC News, Hugh Pym with Yolande Barnes of Savills and Matthew Pointon of Capital Economics (31/5/13)
House prices are racing ahead as stimulus for the market kicks in Independent, Russell Lynch (31/5/13)
’Pick up’ in house prices recorded in sign of market confidence, says Nationwide Independent, Vicky Shaw (30/5/13)
House prices at highest level for nearly two years as confidence in UK economy grows and mortgages get cheaper This is Money, Matt West (30/5/13)
Stamp duty is ‘choking’ housing market as it rises seven times faster than inflation over last 15 years Mail Online, Tara Brady (28/5/13)
Nationwide launches Help to Buy mortgages The Telegraph, William Clarke (29/5/13)
UK home prices rise most in 18 months, Nationwide says Bloomberg, Jennifer Ryan (30/5/13)
House price data
Links to house price data The Economics Network
Statistical data set – Property transactions Department of Communities and Local Government
Nationwide house price index Nationwide Building Society
Halifax House Price Index Lloyds Banking Group
Lending to individuals – November 2012 Bank of England
Questions
- How is the equilibrium determined in the housing market? Using a demand and supply diagram, illustrate the equilibrium. Make sure you think about the shapes of the curves you’re drawing.
- Which factors affect the demand for and supply of housing?
- Why are there regional variations in house prices?
- Why is the housing market a good indicator of the strength of the economy?
- Why have house prices risen throughout 2013? Is the trend likely to continue?
- If the housing market does indeed gain momentum, how might this affect the rest of the economy? Which sectors in particular are likely to benefit?
- Explain why the government’s intervention in the housing market could be seen to have a multiplier effect?
- Concerns have been raised that the government’s schemes to help the housing market may create a house price bubble. Why might this be the case?
Each day many investors anxiously watch the stock market to see if their shares have gone up or down. They may also speculate: buying if they think share prices are likely to go up; selling if they think their shares will fall. But what drives these expectations?
In recent years there is a new factor to account for growing stock market volatility. The Keynesian beauty contest is increasingly being played by computers. They are programmed to buy and sell when certain conditions are met. The hundreds of human traders of the past who packed trading floors of stock markets, have been largely replaced by just a few programmers, trained to adjust the algorithms of the computers their finance companies use as trading conditions change.
