When you look at the performance of the stock market at the end of a trading day it can be hard to work out why shares have either risen or fallen in value.Broadly speaking, share prices are influenced by news or information: new data on employment, manufacturing, directors’ dealings, political events or even the weather, all kinds of news can influence the way shares move.
You will sometimes, however, see little move in share prices when, for example, interest rates shift. This is because investors try to anticipate what is going to happen in the next few months and try to move their portfolios in or out of these stocks before the rest of the market catches on. Sometimes, of course, these expectations can be wrong and if this happen, markets can move very sharply.
If you want success in shares trading you will need to know what news other investors look at and how they will look at it. This will help you pick the best moment to buy and sell your shares. Read more about monitoring news on a company.
The Economy
The health of the global economy has a fundamental influence on share prices because it is ultimately responsible for driving company profits. Broadly speaking, if the economy is growing, company profits improve and shares will become more highly valued. If the economy is weakening, company profits will fall and share prices will go down.
Investors look at a vast amount of data to try and work out what is going to happen to the economy and shift their portfolios before the events occur. This is why you will often see markets move well ahead of an actual event occurring. You may, for example, get little reaction from the stock market when interest rates rise. This is because investors have already anticipated the shift months in advance and adjusted their portfolios beforehand.
You can usually assume that the stock market will anticipate moves in the economy by around six to nine months. So if you want to stay ahead of the game you will need to follow economic data as closely as the professionals.
The kind of information you need to play close attention to is: employment data, the reports put out by the Monetary Policy Committee (to get an idea where interest rates are headed), trade with other countries, retail sales and manufacturing. Sentiment surveys produced by trade bodies such as the Confederation of British Industry are also important indicators of where the economy is heading.
It is not only news about the UK economy that will impact on share prices. The signals coming out of other major economies, particularly the UK’s major trading partners, such as the US and Europe will affect UK shares as what happens in these economies will have an impact on our own.
When looking at economic data, you need to think not only how the wider economy will be affected but whether certain areas will be more affected than others. A rise in interest rates is, for example, often bad news for house builders as people feel less confident about taking on debt. Retailers are often badly affected too as people spend less. Pharmaceutical companies are, however, usually unaffected as people’s demand for drugs is not influenced by the state of the economy.
Companies whose profits are closely tied to the health of the economy are known as ‘cyclical’ stocks. Those businesses that aren’t too affected by the economy are called ‘defensive’ stocks. If economic conditions deteriorate you will often see investors shift from cyclical stocks to defensives
Company News
The way investors interpret news coming out of companies is also a major influence on share prices. If, for example, a company puts out a warning that business conditions are tough, shares will often drop in value. If, however, a director buys shares in the firm, it may be a signal that the company’s prospects are improving.
Companies put out a great deal of news and most of the major announcements are covered by the financial press. But some announcements not regarded as so important and sometimes, particularly among smaller firms that are monitored less by investors and financial journalists, indicators of the company’s health can be missed.
You can stay one step ahead of the game by looking carefully at all the information sent out by companies you own, their competitors and other companies you are interested in. This information is usually available on companies’ websites.
Try to think laterally about the information you are getting. If, for example, a competitor to a company you have shares in produces a revolutionary new product, it will probably hit profits at the company you own. Also think about the impact it will have on suppliers to that business. An increase in sales of mobile phones with cameras in them will not only be good for the phone company but the firms that supply the technology in the phones.
Takeovers, or even rumours of takeovers also have a big influence on prices. This is because investors expect the bidder to pay a premium to shareholders.
Analysts’ Reports
Reports produced by independent analysts also influence share prices. If an analyst changes their recommendation from ‘sell’ to ‘buy’, for example, the shares will often rise in value. Analysts’ reports are produced primarily by investment banks for professional investors, although some stockbrokers will make their research available to private investors. You may find summaries of some reports published on financial news websites or in newspapers and magazines. Some investment banks also publish their reports on their websites for free.
You should remember that the recommendation an analyst puts on a company will affect its share price very quickly and can become irrelevant within hours. This is because the analyst will usually say a stock is a ‘buy’ within a particular price range. If the price moves above their targets the improvements the analyst expects may be ‘priced in’ and so the shares not worth buying.
But analysts’ reports are always worth reading, even if the recommendation is out of date. The reports usually contain a great deal of useful information on the company and how its business is developing. They also often look at how the company rates against its competitors.
Press Recommendations
The financial pages of most national newspapers and investment magazines usually contain share tips. Like analysts’ reports these tips can have a major influence on share prices.
If a journalist recommends a share, the price will usually rise and if they write a negative story the price will fall. These moves usually happen very quickly so if you are going to follow the recommendation it often makes sense to do so as soon as possible.
Sentiment
Investor sentiment is almost impossible to predict and can be infuriating if, for example, you have bought shares in a company that you think is a good ‘buy’ but the price remains flat.
Investor sentiment is influenced by a wide variety of factors. Share prices can, for example, be flat during the summer simply because so many major investors are on holiday or attending major sporting events such as Royal Ascot and Wimbledon, hence the adage ‘sell in May and go away’.
Investor sentiment can lead to irrational buying or selling of shares and result in bull and bear markets. A bull market is when share prices rise while a bear market is when they fall. In the technology boom of the late 1990s, for example, investors paid extremely high prices for shares and ignored traditional valuation measures, such as P/E ratios. This carried on until 2000 when investors belatedly realised these shares has risen too far and resulted in a three year bear market in shares.
Technical influences
Share prices can rise and fall for a variety of technical reasons that may have nothing to do with the actual outlook for an individual company or the outlook for the market.
It is, for example, a common occurrence for share prices to drop back after a strong rally. This happens because investors take profits on some of the shares that have risen in value, protecting their gains just in case the shares start to slip back. Investors often refer to this as market consolidation.
Another technical reason for share prices to rise or fall is the quarterly adjustment in the FTSE 100™ index. Shares that are expected to enter the FTSE 100™ may experience a sharper rise than one would expect in the weeks beforehand while shares that leave the index can fall more sharply. This happens because funds that simply track the index, have to match the composition of the index. Some professional fund managers who hold the affected stocks also adjust their portfolios as they do not want their holding to be too far above or below the company’s weighting in the index.
Share prices can also be affected by investors who use technical analysis to drive their investment techniques. Technical analysis, also known as Chartism, is simply the study of past share price movements and stock market index trends, which are then used to forecast how shares and stock markets will behave in future. Read more about strategies for investment.
Marketmakers can also influence prices. If they, for example, do not own enough shares to balance their books they will have to buy more. Marketmakers also influence prices if the market is looking flat, reducing prices to attract buyers.

