.QUICKEN2015 File Extension
What is a QUICKEN2015 file?
Financial data file created by Quicken 2015, a financial management program; saves user data for multiple accounts, including personal information, transactions, reports, and settings; used exclusively by the 2015 version of Quicken for OS X.
Since Quicken saves the QUICKEN2015 file in a proprietary format, it should not be modified or moved. To export data, you can select File → Export and export your account information as a .QXF file.
The QUICKEN2015 file is saved in the following location by default:
~Library/Application Support/Quicken 2015/Documents/