How to use charts in Online Share Trading

When you log in to Online Share Trading, you’ll find a wide range of tools, reports and other resources available to help you make informed investment decisions. This guide will help you discover what charts are available in Online Share Trading and how you might gain valuable insights from each of them.

Start using charts with Online Share Trading

You’ll find some of the most popular charts available to you under the stock detail section of Online Share Trading.

Once you’re logged in to Online Share Trading, finding the charts available on a listed company is easy. Just follow these steps:

1. Start a 'Company search'

Enter a company’s name or stock code in the ‘Company Search’ field at the top of your Online Share Trading page.

2. Select 'Charts'

Choose ‘Charts’ from the dropdown menu.

3. Click 'Go'

You’ll now go straight through to charts.

Tailor our charts to your needs

Our charts are interactive, and you can tailor them to focus on the information that is important to you. You can do this by selecting a combination of criteria from the dropdown menus at the top. These include:

What it means
Select a timeframe to analyse, from 1 day up to 10 years. The default timeframe is the current (or most recent) day’s trading.
Choose if you want the results to be adjusted or unadjusted. The adjusted results will account for the effect of dividends, split shares and other capital reconstruction events, while the unadjusted results will exclude these.
Pick which type of stock chart you want to look at and a time period of one day or more that you want to analyse.
Moving average
You can select two moving averages from five days to 90 days.
Choose either a linear or logerithmic scale for your vertical axis.
There are a selection of indicators available for you to choose including volume, RSI and stochastic.

Chart types


This is the most popular and simple chart. It plots the stock’s closing price each day over the period you choose.

Bollinger Bands

These are trading bands plotted above and below a 20-day moving average and can be used as an indicator of volatility in the market.  The wider the bands are, the more volatile the market place.

When the market touches or moves beyond the upper band, the market is considered over-bought.  When it does the same with the lower band, the market is thought to be over-sold.

Some more technical investors believe that when the Bollinger bands move closer to the market average, or contract, this may be an early indication that volatility is about to increase sharply.


Candlestick charts give you a quick glance of the highs and lows of the day’s trading activity for a single security. The thin line (the wick) shows you the range of prices that day. The fatter section (the candle) tells you the opening and closing prices. If the candle is shaded, the price was down at market close from where it started the trading day. If the candle is white, then the price finished up from where it began the day.


Similar to a candlestick chart, an OHLC chart shows you the Open, High, Low, and Closing prices for each day, demonstrating movements in price. A tick mark on the left shows the opening price and a tick mark on the right shows the closing price.

Investors who study OHLC charts say that if the close price is closer to the top of the bar then there is demand for the security and the share price will rise. Conversely, if the close bar is closer to the bottom of the bar then demand for the security is weak and the share price is likely to fall.


Shows as a percentage how much a stock has risen or fallen over the time period you choose, based on the daily closing price.

Interpreting charts

Once you have chosen a chart type, you can review the stock performance from many different view points by using filters. Remember this data can be interpreted in a number of ways, so you should weigh this up with other information available and consider how it fits with your investment approach.

Moving Average

A moving average smooths out the pricing based on the average you specify, over the period you’re looking at, making it easier to see underlying trends. The shorter the average you choose to look at, the more sensitive it will be to price changes and the less 'smooth' it will appear.

Moving averages are one of the simplest and most widely used indicators considered by investors. With Online Share Trading you can plot up to two moving averages on a chart.


Choose the scale you want for the vertical axis: Linear or Logarithmic.


A linear scale will plot an equal distance between prices on the vertical axis.


A logarithmic scale will plot an equal distance between percentage changes on the vertical axis. For instance, the distance between 5 and 10 (100% change) will be the same as that between 20 and 40 (also a 100% change). This can make it easier to see what your gains or losses might actually be.


Choose an indicator to gain an insight into the share price relative to the market place. The indicator sits below the chart you select. Indicators available to you include:


This will plot the number of shares changing hands during the period you’re looking at. This gives you an indication on how active the market was.


A Relative Strength Indicator is a momentum indicator. It compares the size of gains against losses to suggest if a stock might be over-bought and over-sold. It does this by plotting a stock on an index from 1 to 100. Traditionally, shares above 70 are considered over-bought and those below 30 are over-sold. 


Like the RSI, a Stochastic oscillator tracks market momentum by plotting a share’s closing price over a specific period on an index from 1 to 100.  The Stochastic Indicator works on the assumption that the closing price should be close to current trend. Traditionally, a stock is thought to be over-bought when it’s above 80 and over-sold when it’s below 20. The fast Stochastic indicator is more sensitive to pricing movements where the slow one uses the 3-day moving average to smooth out the trend.

Other tools

Charts are just one of the powerful tools you’ll find inside Online Share Trading that can help you make investment decisions. If you haven’t already, it’s a good idea to read our guides on watchlists, portfolios and researching companies.

Next steps

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ASB Securities Limited is an NZX firm. When you trade on the NZX markets through ASB Securities you must comply with NZX rules as outlined in the ASB Securities Trading Conduct for Online Share trading. ASB Securities terms and conditions apply. Pricing data supplied by ASX and/or NZX. ASB Cash Management Account, ASB Foreign Currency Account, ASB Margin Lending and ASB Term Deposits are provided by ASB Bank Limited. ASB term's apply. Rates and fees may change. Refer to asb.co.nz for other fees and charges. This page does not have regard to the financial situation or needs of any reader. As individual circumstances differ, you should seek appropriate professional advice. See the ASB Securities glossary for share trading and investment terms or Morningstar for research terms. 

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