  PHENIX has performed an extensive study on the evolution of medium effects
from small to large systems. PHENIX has continued searching for Quark-Gluon
Plasma (QGP) in small systems by measuring collectivity, modification of light
hadron and quarkonia production, and jet substructure. In large systems,
detailed studies on the property of the QGP have been done using direct photon,
$\pi^{0}$-hadron correlation, heavy-flavor electron, and $J/\psi$ flow with a
large statistics of data collected in 2014. This report covers new results from
the PHENIX experiment in various collision systems.
