Notes about the QPH file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The QPH file type is primarily associated with 'Quicken' by Intuit Inc.. The Quicken Price History (QPH) file contains a record of all of the prices that have been entered or downloaded for all of your securities. Usually named QDATA.QPH.