By Mike Duncan | March 2026
The private bank model has one design flaw that everything else flows from: it is optimised for the wrong objective.
Managed volatility, relative return benchmarks, and layered product structures are not built to compound your wealth. They are built to retain your AUM, minimise redemption risk, and generate recurring fee revenue across a product stack that the bank controls.
The arithmetic is not subtle. On an AUD 500M portfolio, structural fee drag runs at approximately 2% per year before a single bad investment decision is made. The alternatives sleeve alone involves three layers of fee extraction: adviser fee, fund manager fee, and carry on gains. Direct ownership eliminates two of those three layers entirely, and captures the gross yield rather than what survives the fee stack.
Add misaligned crisis behaviour, where the private bank model draws down hardest at precisely the moment compounding is most valuable, and the gap over a full cycle becomes very large.
The same AUD 500M starting capital produces AUD 5.8B with direct ownership, absolute return discipline, and explicit tail protection. It produces AUD 1.4B with a typical private bank model. The AUD 4.4B difference is not explained by greater risk-taking. It is the predictable result of structural fee drag, relative return thinking, and the absence of genuine crisis protection.
This executive brief explains why the gap is structural rather than cyclical, what a portfolio built for a different objective actually looks like, and what it costs to run one properly.
Read the Executive Brief
The Portfolio Your Private Banker Won’t Build
