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Why do shares prices go up?

Published 02-MAY-2023 10:00 A.M.


6 minute read

We invest in small caps in the hope that the share price will go up.

Share price moves mostly come down to luck, good timing, and a fair bit of patience.

The tricky part is understanding what events move share prices and then buying ahead of one of those factors coming into play.

Why small cap share prices go up

At the highest level, share prices are subject to simple supply and demand dynamics.

Fundamentally, share prices go UP when there are more buyers than sellers.


Share prices go DOWN when there are more sellers than buyers.

There are generally four things that bring more buyers than sellers to a company’s shares. We call these “price demand drivers”.

  1. A return of positive market sentiment. Investors are optimistic and looking to buy, viewing the outlook for stocks/markets as positive.
  2. A potentially company-making announcement is imminent. Investors start to speculate on the outcome of a potentially company-making announcement like a drill result or result of a clinical trial.
  3. An announcement that exceeds market expectations. A company delivers a material announcement that is better than the market expected or it came as unexpected good news.
  4. Large capital inflows. Macro fundamentals for a sector/investment theme improve significantly and investors start to look for opportunities to capitalise on strength in that sector.
Price Demand Drivers

Here is a bit more detail on each of these:

Why does market sentiment impact the share price?

Market “sentiment” is basically a measure of the average levels of positive versus negative feelings across the investment community.

If investors are feeling positive there will be more buyers who are more comfortable investing and taking risks with their capital.

If investors are feeling negative, many will want to be out of the market and hold onto cash, taking less risks with their capital.

This is the neverending balance between greed and fear — understanding it will help you understand markets and make better decisions.


There is a common Warren Buffet quote that reflects this: “be fearful when others are greedy, and greedy when others are fearful”.

The idea is to invest when market sentiment is low, waiting until positive sentiment returns, and conversely taking the money off the table when market sentiment is high.

Of course, this is much easier said than done.

When markets are looking dire (inflation is high, interest rates are high, recession, etc...) the vast majority of investors have a negative outlook, and exhibit “risk off” behaviour including reducing their stock market investments.

As share prices fall that fear gathers momentum and can often result in share prices (and the market) overshooting to the downside.

Eventually, sentiment turns positive and buyers come back to the market, and many stocks that were oversold will enjoy a bounce back up. This is often seen in more volatile small cap stocks.

Once investors see that stocks can actually go up again, greed replaces fear, feelings turn positive, and more and more investors rush back in.

That’s until the opposite happens and sentiment slowly turns negative again, then turns positive, then negative again...

This cycle repeats forever.

Imminent company-making announcement can move the share price

With small cap stocks, one big announcement can fundamentally change the future prospects of a company, which can understandably result in a share price rise.

An obvious example of this is exploration drilling results from a junior explorer.

Before a drilling result announcement is released, many investors will place bets speculating in hope of an excellent result.

This is where imaginations can run wild, investors are able to price in results that might not even be possible.

This type of behaviour usually causes the share price to rise in the lead up to the results being announced...

But also to fall if the eventual result doesn’t match or exceed those lofty expectations.

It’s important to note that for the share price to continue to rise after the result is announced, it must EXCEED what the market was expecting. If it doesn’t, disappointed investors will sell.

🎓 To see how we set expectations going into material announcements like drill results check out the following: Expectation setting leading up to drilling programs

Share price rise on announcement that exceeds market expectations

Sometimes a small cap company delivers an announcement so good that the share price spikes... and actually stays up.

Again, the key to a share price rise occurring is that the results announced must EXCEED what the market was expecting.

Because market expectations are already factored into the pre-result share price.

Ultimately market behaviour is driven by emotions.

Emotions are driven by how reality matches people’s expectations.

Emotions when Investing is no different to situations in everyday life - an easy way to understand emotions is to think about when we order something online.

  1. If after ordering something the package arrives earlier than expected or with unexpected extra items. You're thrilled with the experience.
  2. If the package arrives on time and contains exactly what you were anticipating. You're satisfied with the experience.
  3. If the package arrives later than expected or is damaged upon arrival. You're disappointed with the experience

It’s the same for ASX listed small caps - the lower the expectations, the more delight (and buying) will be generated by a result.

The higher the expectation, the more likelihood of disappointment.

It's also why sometimes share prices fall on what many believe was a great announcement, but perhaps it just wasn’t as “great” as what everyone else expected.

Large capital inflows can raise the share price

One of the strongest influences on a company’s share price is the overall strength of the macro theme it is exposed to.

Again, share prices are simply a function of supply and demand.

For a share price to rise there must be more buyers (demand) than sellers (supply).

The easiest way for new demand to come into the market is for macro fundamentals to improve which then ultimately leads to more investor interest in companies with exposure to that theme.

Take the battery materials boom for example.

Big share price rises in battery metals stocks were driven not only by individual investors...

...but when the following groups started buying:

  • Global car companies
  • Global resource companies (M&A)
  • Ultra high net worth investors
  • Large fund managers
  • Superannuation funds
  • Banks (lending)

It was the massive influx of capital off the back of battery materials macro strength that turned some small caps into billion dollar behemoths.

An example in our Portfolio was Vulcan Energy Resources (ASX:VUL) which went from ~15 cents to over $16 per share in under two years.

For the first few months of VUL’s life as a battery metals stock the company's share price hovered around ~20c.

After the markets, mainstream media, large institutional investors and car companies caught onto the battery materials macro thematic (in 2020-21), VUL’s share price started moving.

In summary, when big money starts chasing small cap stocks, share prices can REALLY get going.

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S3 Consortium Pty Ltd (S3, ‘we’, ‘us’, ‘our’) (CAR No. 433913) is a corporate authorised representative of LeMessurier Securities Pty Ltd (AFSL No. 296877). The information contained in this article is general information and is for informational purposes only. Any advice is general advice only. Any advice contained in this article does not constitute personal advice and S3 has not taken into consideration your personal objectives, financial situation or needs. Please seek your own independent professional advice before making any financial investment decision. Those persons acting upon information contained in this article do so entirely at their own risk.

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