Returns a list of historical positions for a specific account owned by a client.
The required fields are ClientKey and either StandardPeriod or FromDate/ToDate.
GET https://gateway.saxobank.com/sim/openapi/hist/v3/positions/{ClientKey}/?$top={$top}&$skip={$skip}&$inlinecount={$inlinecount}&$skiptoken={$skiptoken}&Symbol={Symbol}&AccountGroupKey={AccountGroupKey}&AccountKey={AccountKey}&FromDate={FromDate}&ToDate={ToDate}&StandardPeriod={StandardPeriod}&AssetType={AssetType}&MockDataId={MockDataId}