We don't have a standard way of defining wealth. Wealth requires an evaluation of all productive assets, which accumulate (and depreciate) over years. This would also include measuring not just physical capital, but also human capital (education, experience, and perhaps social organization), and natural resources. This introduces additional complications of double counting (some financial assets represent ownership rights in physical assets) and offsetting liabilities (resulting from various complicated derivative-like instruments. We publish a measure of the additions and subtractions from total wealth. It appears in the World Development Indicators online tables as Table 4.11: "Towards a broader measure of savings."