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A selection of calculators and tools for investing and trading in various ASX markets can be accessed below.

Disclaimer - ASX calculators & tools are for illustrative purposes and are not intended to be a substitute for financial product advice. Independent advice should be sought from an Australian financial services licensee before making financial product decisions. ASX calculators & tools are populated with data - all of which may be changed by the user. The factors for each calculation can also be varied. The values produced by applying the calculators to different products may differ from the current price of those products, due to market conditions. Where an interest rate is specified, the overnight cash rate is used. Inflation expectations are built into this rate. If a method for present value estimation is not provided, future values do not take into account inflation. To the extent permitted by law, ASX and its employees, officers and contractors are not liable for loss or damage arising in any way (including by way of negligence) from or in connection with the use of ASX calculators & tools or from any one acting or refraining to act in reliance.

ASX Bond calculator

Used to calculate bond prices and yields for Exchange-traded Australian Government Bonds (AGBs) and other standard fixed interest bonds.

Options calculators

Interest rate futures and options calculators

Warrants calculators

Listing fee calculator

The ASX equity listing fee calculator is designed to provide you with a guide to ASXs equity listing fees that apply as of 1 January 2018.

Corporate Actions and Notices

ETO adjustments

If an ASX listed entity over which there are exchange traded options (ETO) makes a pro-rata change to its ordinary share capital structure  (eg. bonus issue, declares a special dividend), ASX may make an adjustment to the specifications (see below) to its ETO, in order to preserve the value of open positions held by takers and writers at that time as best as possible. 

The ETO contract specifications which may be adjusted are:

  • contract size
  • exercise price
  • expiry date
  • number of contracts
  • underlying securities

Usually, the adjustment method maintains as far as practicable the total exercise value over the ex-period. That is, the result of the number of contracts multiplied by the contract size and multiplied the exercise price is kept as the same total exercise dollar amount, before and after the ex-date.

Under the Operating Rules, ASX determines whether an adjustment is appropriate and notifies the market by way of a Notice to ASX Clear Participants of the ETO adjustment to be applied and the effective adjustment date (usually the ex-date). All queries from clients of broker participants on adjustment matters are to be conducted with their brokers, and not with the ASX.

Corporate events that do not strictly affect shares in a pro-rata manner, that is proportionally, are generally excluded from an option adjustment. For instance, an entitlement issue of 500 shares for each shareholder, (irrespective of the number of shares held by a shareholder) is not a strictly pro-rata issue. But a bonus issue of 1 for 2 does result in an adjustment as it is a  pro-rata issue of 500 new shares for each 1000 old shares held.

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