Calculate YTM and Modified Duration Prerequisites We assume you have all prerequisites you may need, including: Get Access to Finmars Link with Finmars ID Install PMS Core or PMS Plus add-on How to Import Files in PMS Core and PMS Plus When to use It's expected that all calculations are run by respected workflows and or pipelines, but sometimes there is a time you need to run it manually, the most frequent cases are: You made manual edits in the data that will affect YTM and Modified Duration - this WILL NOT be automatically recalculated; You unchecked calculation options in the PMS Core/PMS Plus and/or other add-ons and/or pipelines;  Calculate YTM and Modified Duration Go to Add-ons -> PMS here go to the Helper tab and open Calculate Price History section. Fill in parameters according to their info ( "i" icon close to the parameter's name).  Click Run . Confirm parameters and click Run  again. In the right frame you will have execution info, click Refresh to get updates. Refresh and read Log  and wait for Result . See successful run example below: