FIG. 1 is a perspective view from the upper left side of a holder for planar material showing my new design;

FIG. 2 is a perspective view from the upper right side thereof;

FIG. 3 is a top plan view thereof, with a bottom plan view being a mirror image thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a perspective view thereof in use holding a sign.

The parts illustrated in dashed lines in FIGS. 1, 2 and 8 form no part of the claimed design.