Display screen or portion thereof with an animated graphical user interface

[0001]FIG. 1 is a first image in a sequence for a display screen or portion thereof with animated graphical user interface showing our new design;

[0002]FIG. 2 is a second image in the sequence;

[0003]FIG. 3 is a third image in the sequence;

[0004]FIG. 4 is a fourth image in the sequence; and,

[0005]FIG. 5 is a fifth image in the sequence.

[0006]The outermost uneven-length broken lines of FIGS. 1-5 illustrate a display screen or portion thereof, in an environment of use of the design with an electronic device, and form no part of the claimed design. The negative space between the uneven-length broken lines and solid lines forms no part of the claimed design. The even-length broken lines within the display screen or portion thereof of FIGS. 1-5 illustrate portions of the graphical user interface, and form no part of the claimed design.

[0007]The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-5. The process or time for transition from one image to another of each of the examples of FIGS. 1-5 forms no part of the claimed design.