Simple Dietz

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Welcome to Simple Dietz Performance Screen

We have improved Simple Fund 360 Investment Reporting for Planners and Investment advisers by adding a new Simple Dietz Method to the Investment Dashboard. The new method provides a more weighted measure when calculating the return on a portfolio than a simple return method.

The Simple Dietz method measures investment performance during a period, incorporating cash inflows and outflows.

The Simple Dietz method is named after Peter O. Dietz, author of 'Pension Funds: Measuring Investment Performance'.


From the Main Toolbar, go to Investments.
Select Investment dashboards from the list.

Quickly adjust the date range for the Simple Dietz Screen.


Users can also manually specify a date range and Export to PDF.



The Rate of Return Explained

Important: Simple Fund 360 has expanded on the Simple Dietz formula to be able to apply it to a range of investment types, whether it be unitised or non-unitised. Below are detailed examples of the exact calculations used and how simple fund 360 applies them.

Definition Table Non-Unitised/Bank Accounts Unitised Portfolio
Simple Dietz Formulas used:

Formula used for Non-Unitised investments/Bank Accounts:


Formula for Unitised investments:



Definition Table
Notation Definition  Notes
 t1 The beginning of the period If there are no holdings at the beginning of the start date selected, t1 will be the date of the first purchase.
 t2 The end of the period If there are no holdings at the end of the end date selected, t2 will be the date of the last disposal.
 Mt1 Opening Value The market value of the asset(s) as at the beginning of t1.
 Mt2 Closing Value The market value of the asset(s) as at the end of t2.
NCFi Net cash flow on a specific day i

Include any purchases, disposals, instalments, returns of capital and dividend/distribution reinvestments.

Assume NCFt1 occurs at the beginning of t1 and NCFt2 occurs at the end of t2 and other cash flows occur at the mid-point of (t1, t2) on average.

 Ii Income on a specific day i

The income amount is the amount of cash flow from the income received including any tax credits associated with the income.

It1 occurs at the beginning of t1 and It2 occurs at the end of t2 and other net income occurs at the mid-point of (t1,t2) on average.

It is assumed any income will reduce the market price of investment.

Example Case:


Viewing Investment Performance

Quickly review the balances and performance across all investment classes with Simple Fund 360's interactive data visualisation charts.


Ensure that the balance of investments are within the investment strategy of your funds by effortlessly viewing all movements for your investments for any given time frame


The data source for the chart visualisations is simply the table found underneath the charts, so any filters applied to the table will be reflected in the displayed visualisation.

To view more details for an investment category, hover your mouse over the chart segment to display the full account name, account balance and weighting percentage.


Easily compare the contributions of each investment class towards by the fund's performance by viewing the Income and Market Gain bar chart.

Earnings and losses will be displayed next to each investment class, displaying the exact contribution the investment class contributed towards the fund's performance.


Investment Performance Simple Dietz report

Clients now have the ability to view the Dashboard in the form of a report. The report can be downloaded in the form of a PDF and printed. The report can be accessed from the reports screen. 


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