  We report the magnetoresistance (MR), Hall effect, and de Haas-van Alphen
(dHvA) effect studies of the single crystals of tungsten carbide, WC, which is
predicted to be a new type of topological semimetal with triply degenerate
nodes. With the magnetic field rotated in the plane perpendicular to the
current, WC shows field induced metal to insulator like transition and large
nonsaturating quadratic MR at low temperature. As the magnetic field parallel
to the current, a pronounced negative longitudinal MR only can be observed when
the current flows along the certain direction. Hall effect indicates WC is a
perfect compensated semimetal, which may be related to the large nonsaturating
quadratic MR. The analysis of dHvA oscillations reveals that WC is a multiband
system with small cross-sectional areas of Fermi surface and light cyclotron
effective masses. Our results indicate that WC is an ideal platform to study
the recently proposed New Fermions with triply degenerate crossing points.
