  M dwarfs are ubiquitous in our galaxy, and the rate at which they host
stellar companions, and the properties of these companions, provides a window
into the formation and evolution of the star(s), and of any planets that they
may host. The Pervasive Overview of 'Kompanions' of Every M dwarf in Our
Neighborhood (POKEMON) speckle survey of nearby M dwarfs is volume-limited from
M0V through M9V out to 15 pc, with additional targets at larger distances. In
total, 1125 stars were observed, and 455 of these are within the
volume-limited, 15-pc sample of M-dwarf primaries. When we combine the speckle
observations with known companions from the literature, we find that the
stellar multiplicity rate of M dwarfs within 15 pc is 23.5% plus or minus 2.0%,
and that the companion rate is 28.8% plus or minus 2.1%. We also find that the
projected separation distribution for multiples that are known to host planets
peaks at 198 au, while the distribution for multiples that are not yet known to
host planets peaks at 5.57 au. This result suggests that the presence of
close-in stellar companions inhibits the formation of M-dwarf planetary
systems, similar to what has been found for FGK stars.
