What Actually Makes an Investment Price Change?
An investment’s market price reflects the price at which buyers and sellers are currently willing to trade it.
As investors receive new information and reassess what they believe an investment may be worth in the future, the price they are prepared to accept can change. If expectations become more favourable, buyers may be willing to pay more. If expectations weaken, they may only be willing to buy at a lower price.
This process happens continually across financial markets.
The information behind those changing expectations can relate to an individual company, the wider economy, interest rates, inflation or many other factors. Sometimes a significant announcement causes an obvious change in expectations. At other times, prices move without one clear event explaining why.
It is also important to avoid a common simplification: investment prices do not rise simply because there are “more buyers than sellers”.
Every completed trade involves both a buyer and a seller. What changes is the price at which those market participants are willing to transact.
Investment prices can change when expectations about an investment improve or weaken, changing the price at which buyers and sellers are willing to trade. Investment prices change when the price at which market participants are willing to trade changes. The information and expectations causing that change can vary considerably.How Changing Expectations Can Move Investment Prices
Expectations Improve
Expectations Weaken
This provides the basic mechanism behind investment-price movements.
The next question is what causes those expectations to change.
Why Do Expectations Matter So Much?
Investment prices are influenced not only by what is happening today, but also by what investors expect to happen in the future.
When investors consider what they are willing to pay for an investment, expectations about future profits, growth and risks can already be reflected in its current price.
This means new information is often important because of how it compares with what investors were already expecting.
Imagine a company is expected to report £100 million of profit.
If it reports £120 million, the result is better than expected.
If it reports £100 million, it has delivered approximately what investors anticipated.
If it reports £80 million, the result is worse than expected.
The same company can produce very different market reactions depending on how its actual performance compares with what investors were expecting.
The company reports more profit than investors expected. If this improves expectations about its future prospects, investors may become willing to pay more for its shares.
The company delivers approximately what investors expected. Much of this information may already be reflected in the share price, so the announcement does not necessarily cause a large movement.
The company reports less profit than investors expected. Investors may revise their expectations about its future prospects and become willing to pay less for its shares.
Investment prices can respond to the difference between expectations and reality, rather than simply whether the news appears good or bad. Even rising profits can coincide with a falling share price if investors had expected a stronger result.
How Results Can Compare With Expectations
£120m Profit
Expected: £100m
£100m Profit
Expected: £100m
£80m Profit
Expected: £100m
This helps explain why apparently good news does not always make an investment rise.
Suppose a company’s profits increase substantially, but investors had expected an even larger increase. The result may still cause expectations to weaken because the company has performed less strongly than anticipated.
Its share price could therefore fall despite the company reporting higher profits.
The reverse can also happen. Apparently negative news may coincide with a rising price if the outcome is better than investors had feared.
Investment prices are therefore forward-looking. What matters is not only what happened, but also how that information changes expectations about what may happen next.
How Can Company Performance Affect Investment Value?
For shares in an individual company, information about the business can change what investors are willing to pay.
Profits and revenue are obvious examples, but they are not the only factors that can influence expectations.
Investors may also consider changes in:
- business costs;
- debt and borrowing;
- competition;
- customer demand;
- new products or services; and
- management decisions.
For example, a company could report increasing sales while simultaneously experiencing an even larger increase in costs. Investors might then become less optimistic about future profits despite the growth in revenue.
Similarly, a profitable company could see its share price fall if investors begin to expect slower growth in the future.
The effect of company information therefore depends partly on what it suggests about the company’s future prospects and partly on what the market had already expected.
Company-specific developments are only one reason prices move. Other information can affect expectations across many businesses at the same time.
How Can the Economy Affect Investment Prices?
Companies operate within a wider economy, so changing economic conditions can affect expectations about their future performance.
Economic growth, consumer spending, employment and borrowing conditions can all influence how much businesses sell, what their costs are and how much profit they may eventually make.
For example, stronger consumer spending may benefit businesses that depend heavily on household purchases. Weaker economic activity could reduce demand for some products and services.
These effects are not identical across every company.
One business might benefit from a particular economic development while another is negatively affected. Different industries can also respond differently to the same conditions.
A stronger economy therefore does not automatically mean that investment prices will rise, just as weaker economic data does not guarantee that prices will fall.
Once again, expectations matter.
If investors already expected strong economic growth, confirmation of that growth may contain relatively little new information. A weaker-than-expected result could have a greater effect even if the economy itself is still growing.
Why Do Interest Rates Affect Investments?
Interest rates can influence investment prices through several different channels.
They affect the cost of borrowing for households and businesses. They can influence consumer spending. They also affect the returns available from savings and other financial assets.
Higher borrowing costs, for example, can increase the cost of servicing debt for some companies. Households with mortgages or other borrowing may also have less money available for spending.
If investors expect these conditions to reduce a company’s future profits or growth, they may become willing to pay less for its shares.
Interest rates can also change the alternatives available to investors.
If returns available from savings or lower-risk assets increase, investors may require greater potential returns before accepting the additional uncertainty associated with other investments. That can influence how much they are prepared to pay for those investments today.
How Interest Rates Can Influence Investment Prices
A change in interest rates can affect borrowing, saving and expectations about future company performance, which can ultimately influence investment prices.
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Interest Rates Change
The cost of borrowing and the returns available from saving can increase or decrease.
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Financial Conditions Change
Households and businesses may face different borrowing costs, while alternative investments may become more or less attractive.
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Expectations Change
Investors may revise their expectations for company profits, economic activity and the returns they require from investments.
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Investment Prices Can Respond
As investors reassess what they are willing to pay, investment prices can rise or fall.
Interest rates do not mechanically determine investment prices. They influence financial conditions and expectations, which can change how investors value different investments.
The relationship is not automatic.
An increase in interest rates does not mean every investment will fall, and a reduction does not guarantee that investments will rise.
Why rates are changing, what investors expected and how individual businesses are affected can all influence the eventual market reaction.
How Can Inflation Affect Investment Values?
Inflation can also influence investment prices because rising prices affect businesses, consumers and expectations about the wider economy.
For businesses, inflation can increase costs such as wages, materials and energy. Some companies may be able to pass those increases on to customers through higher prices, while others may find their profits squeezed.
Consumers can also change their behaviour when prices rise. If households have less purchasing power, demand for some goods and services may weaken.
Inflation can additionally influence expectations about future interest rates. If investors expect higher inflation to contribute to higher rates, they may reassess borrowing conditions, company profits and the returns they require from investments.
There is therefore no single market response to inflation.
Its effect depends on the particular investment, how businesses and consumers respond, what may happen to interest rates and—again—how those developments compare with what investors had already expected.
How Inflation Affects Investments explores this relationship in more detail.
Why Can Many Investments Fall at the Same Time?
Not every investment-price movement is caused by information about one particular company.
Sometimes new information changes expectations across a much larger part of the market.
Concerns about an economic downturn, for example, could lead investors to expect weaker demand and lower profits across numerous businesses. Significant changes in interest-rate expectations, financial shocks or major periods of uncertainty can similarly affect many companies and sectors at once.
This helps explain why even a diversified portfolio can fall in value.
Diversification can reduce the effect of problems concentrated in one company or area, but it cannot guarantee protection when a broader factor is influencing many investments simultaneously.
That does not mean every investment will move by the same amount.
Some may fall substantially, others only slightly, and some may rise. The important distinction is that a broad market decline does not necessarily mean that something has gone wrong independently with every company whose price has fallen.
Sometimes the same underlying development is changing expectations across much of the market.
Why Can Investment Prices Move When Nothing Obvious Has Happened?
Investment prices can change even when there is no obvious news story or major announcement explaining the movement.
Markets continually process information and expectations.
Investors may revise forecasts for company profits, economic growth, interest rates or other risks without there being one dramatic event that clearly explains the change.
Different market participants also have different objectives, time horizons and reasons for buying or selling. The prices at which they are prepared to trade can change throughout the day as conditions and expectations develop.
This is why explanations for daily market movements should be treated carefully.
A particular news story may have contributed to a movement, but there is not always one identifiable reason why an investment rose or fell.
Market prices ultimately reflect the combined decisions and changing expectations of many participants rather than a single explanation that can always be identified afterwards.
What Is Market Sentiment?
Market sentiment describes the overall attitude or level of confidence investors have towards an investment, a market or the wider economic environment.
Sentiment may become more optimistic when investors feel increasingly confident about future prospects. It may become more cautious when uncertainty or concerns increase.
These changes can influence what investors are willing to pay.
During periods of optimism, investors may become willing to accept higher prices because they expect favourable future outcomes. During periods of greater uncertainty, they may become less willing to pay those prices.
Market sentiment should not be thought of as completely separate from financial or economic information.
Company results, interest rates, economic forecasts and unexpected events can all affect investor confidence. Sentiment describes part of the collective response to those developments.
Changes in sentiment can also contribute to substantial short-term price movements, which is closely related to Investment Volatility.
However, a short-term change in sentiment does not by itself determine an investment’s eventual long-term outcome.
Does a Falling Price Always Mean an Investment Will Perform Poorly?
No.
Investment prices can rise and fall over relatively short periods, so a temporary decline does not by itself tell you what the eventual investment return will be.
A price might fall because investors have become more cautious about the economy, interest rates or the wider market rather than because something specific has happened to the underlying investment.
If expectations subsequently improve, some or all of that decline could potentially be reversed.
But a falling price should not automatically be dismissed as temporary either.
An investment can fall because its underlying prospects have genuinely deteriorated. A company may become less profitable, take on unsustainable debt, lose customers or experience other problems that reduce what investors believe it is worth.
There is no guarantee that an investment which has fallen will recover.
This is why a short-term price movement needs context. It tells you what the market is currently willing to pay, but it does not by itself tell you what the investment will eventually be worth.
Can You Lose Money Investing? explains how falling investment values can ultimately result in permanent losses.
Can You Predict Whether an Investment Will Rise or Fall?
Future investment-price movements cannot be known with certainty.
Investors can analyse businesses, economic conditions, interest rates, inflation and many other factors. That analysis may help them form expectations about the future, but the future itself remains uncertain.
New information can also change those expectations quickly.
A company may perform differently from forecasts. Economic conditions can change. Interest-rate expectations can shift. Unexpected events can alter how investors assess future risks and opportunities.
Even correctly identifying something that could affect an investment does not necessarily reveal how its price will respond.
Other investors may already have anticipated the development.
The information may already be reflected in the current price.
Or another factor may prove more important.
Understanding the forces behind investment-price movements is therefore useful because it explains where some of the uncertainty involved in investing comes from.
It does not provide a reliable way to predict the next market movement.
That uncertainty is a fundamental part of Investment Risk.
Conclusion
Investment prices rise and fall because the prices at which buyers and sellers are willing to trade continually change.
Those changes are often driven by expectations about the future.
Company results, economic conditions, interest rates, inflation and wider market developments can all cause investors to reassess what an investment may be worth. But the market reaction depends not only on whether information appears positive or negative—it also depends on how that information compares with what investors had already expected.
This is why good news can coincide with falling prices, why many investments can move together and why prices sometimes change without one obvious explanation.
It also explains why understanding a factor that influences markets is not the same as being able to predict what markets will do next.
Investment prices reflect changing expectations about an uncertain future, and as those expectations change, the prices investors are willing to accept can change with them.
