.QUICKENDATA File Extension
Quicken Essentials for Mac Data File
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What is a QUICKENDATA file?
Financial data format used by Quicken Essentials for Mac, the Mac OS X version of the Quicken personal financial management software; saves financial data for the user, such as account, loan, investment, and transaction information.
NOTE: The Windows version of Quicken uses the .QDF format for user financial data.