  The matter-antimatter asymmetry cannot be explained by the Standard Model
(SM) of elementary particle physics. According to A. Sakharov, additional
sources of $\mathcal{CP}$-Violating phenomena are needed to understand the
matter-antimatter asymmetry. Electric Dipole Moments (EDMs) of subatomic
elementary particles may provide additional $\mathcal{CP}$ violation, since
they violate $\mathcal{T}$ (and $\mathcal{P}$) symmetry. Polarized beams in
storage rings offer the possibility to measure EDMs of charged particles by
observing the influence of the EDM on the spin motion. The Cooler Synchrotron
(COSY) at Forschungszentrum J\"ulich provides polarized protons and deuterons
up to a momentum of 3.7 GeV/c and is therefore an ideal starting point for the
JEDI - Collaboration (J\"ulich Electric Dipole moment Investigations) to
perform the first direct measurement of the deuteron EDM. This document
describes recent results of EDM activities at COSY.
