Observed arrival · 2026-09-02
Mulden: The Number the Fact Sheet Left Out
An independent ETF and portfolio research archive that recomputes overlooked measures such as drawdown, factor exposure, duration, and cost drag.
Field notes
Mulden provides three routes into its archive: by ETF, by measure, and through recent analysis. Its fund index currently covers 71 ETFs, while the measures index defines 25 concepts and records uses of metrics including expense ratio, maximum drawdown, duration, beta, turnover, and tracking error. The site also publishes a methodology section describing data sources, return conventions, and limits, giving readers a way to inspect how the figures were produced.
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