24716 – Exchange-Rate Volatility

Exchange-Rate Volatility measures how much the Australian dollar has moved against the United States dollar over the preceding twelve months. It does not measure whether the dollar is high or low.

The node is a component of Financing & Volatility Conditions (24710), which in turn sits within the APN Investment Conditions Index™ (24700). It is a national time series, not a geographic one — there is no locality distribution or map at this node.

The exchange rate enters property conditions indirectly: through the cost of imported construction inputs, and through the terms on which offshore capital is converted into Australian assets. This node measures the stability of that conversion rate, not its level.

The input is constructed by APN rather than published by the Reserve Bank. At each quarter end it takes the standard deviation of the preceding twelve monthly movements in the AUD/USD rate, measured as logarithmic changes, the standard treatment for an exchange rate.

A trailing twelve-month window is used rather than a within-quarter calculation because roughly three monthly observations in a quarter cannot support a standard deviation. The underlying exchange-rate record extends back to 1969, giving this node the longest history of any component in the 24700 series.

Exchange-rate movement over the year to September 2026 reads 0.0291, slightly below the comparison-window average of 0.0299. The standardised reading of −0.12 places the quarter a little above the middle of this node's record, at an intensity position of 60.3 across 225 quarters, the highest reading since December 2024.

The measure has risen from 0.0271 in June 2026 and from the December 2025 stamp of 0.0115, the calmest twelve-month stretch since 2011, but remains well short of the levels recorded around major dislocations. The highest reading in the full record is 0.0783 in June 2009; the pandemic period peaked at 0.0403 in December 2020.

The currency has been comparatively settled. The intensity reading records the magnitude of movement alone; the signed reading of 39.7 carries the index's ruled direction, under which a more settled currency is the more favourable condition for investment.

• The trailing window lags the event. Because each reading covers the preceding twelve months, a dislocation enters the measure in the quarter it occurs and remains in it for a further four. The 2020 pandemic movement first lifts the series at the March 2020 stamp and peaks nine months later, in December 2020, well after the movement itself. Peaks in this series date the end of a disturbed year, not its beginning.
• The pre-float era is not comparable. The record begins in 1970, but the Australian dollar was managed against a peg until it was floated in December 1983. Readings before that date reflect an administered rate and are not comparable with those after it. The lowest reading in the entire record, 0.0017 in December 1970, belongs to that era.
• The comparison window and the ranking population differ. The standardised reading is measured against 2011–2025, ratified as part of this node's certification. The position is ranked against every quarter in which the input is present, which runs back to 1970 and therefore includes the pre-float era described above. This node has by far the longest ranking population in the 24700 series, and that length is not uniform in character.
• One currency pair, not a trade-weighted measure. The node measures the Australian dollar against the United States dollar alone. A trade-weighted measure covering Australia's actual trading pattern exists in the same source and is not currently used here.
• Comparison basis. The position ranks this quarter against the 225 quarters in which the input is present. That full-coverage basis is the ratified one across the 24700 series; the all-rows basis is retired.
• Signed direction. This component enters the index negated: an unsettled currency is an adverse condition for investment. Its signed position of 39.7 and its intensity position of 60.3 describe the same quarter on two frames — one carrying that direction, the other measuring distance from the node's own record without regard to it.

The other five components of Financing & Volatility Conditions (24710). Each is independently certified and enters that branch at equal weight.