My Files displays both the files that you currently have checked out as well as files that you’ve recently checked out and checked back in. The files checked out in your name are designated by the key icon: 
To isolate the files you currently have checked out:
Sort the My Files list according to lock owner. To do so, do one of the following, depending on the options available:
Click Checked Out By in the Sort by area.
Click
in the column headings row.
Note: If the expected items don’t appear, refer to the information on navigating a list in the chapter on using the interface.