# Hedged and Unhedged Time Series Asset class time series in the Windham-managed database are unhedged and denominated in USD by default, unless otherwise noted. ![Examples of hedged time series returns](/files/-MEy58ahnb4VD1vM58rd) ## Base Currency The WPA has the option to specify the base (denominated) currency of the analysis for a case file. ![Base currency specification in the WPA](/files/-MEy5ep7NLnVuKJtRZ4x) If the selection of assets are denominated in the default USD currency, a change in the base currency using the drop down editor will convert all selected assets to the specified base currency using the internal time series of spot rates. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wpahelp.windhamlabs.com/hedged-and-unhedged-time-series.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.