21610 – Investor vs. Owner-Occupier Behaviour

Investor vs. Owner-Occupier Behaviour (21610) measures the Investor Concentration Ratio — the share of new residential lending commitments going to investors rather than owner-occupiers. A rising ratio indicates investor activity is claiming a growing share of credit flow into the residential market relative to owner-occupiers.

Primary metric: Investor Concentration Ratio, Z-Score

Metric typology: single-vector Z-score index, ABS lending commitments data.

Measurement character. This node’s baseline is permanently shorter than the platform’s standard 15-year window — the underlying ABS collection series begins in the third quarter of 2019, giving N=26 rather than the standard N=60. This is a structural feature of the source data, not a gap in data collection.

Tier-1 sovereign source. ABS 5601.0 Table 1, Housing Finance, quarterly, N=26. No commercial data dependency exists in the node.

At +1.2431σ, investor concentration in new lending remains materially elevated relative to its baseline, though it has eased from the +1.5571σ reading certified for Q4 2025 — the first quarter-on-quarter retreat in the current certified record. The level remains historically high even after that retreat: investors are still claiming a materially larger share of new lending commitments than the 2019–2025 baseline average.

Position. 88.9, ranked against 28 quarters of the node’s record.

The other five components of Market Sentiment & Behavioural Analysis (21600).

Investor vs. Owner-Occupier Behaviour (21610) holds Active status. The certified Z-score is +1.2431σ (Q2 2026, N=26), constructed exclusively from Tier-1 ABS data on a frozen 2011–2025 baseline anchor.