  In the recent years, major milestones in neutrino physics were accomplished
at nuclear reactors: the smallest neutrino mixing angle $\theta_{13}$ was
determined with high precision and the emitted antineutrino spectrum was
measured at unprecedented resolution. However, two anomalies, the first one
related to the absolute flux and the second one to the spectral shape, have yet
to be solved. The flux anomaly is known as the Reactor Antineutrino Anomaly and
could be caused by the existence of a light sterile neutrino participating in
the neutrino oscillation phenomenon. Introducing a sterile state implies the
presence of a fourth mass eigenstate, global fits favour oscillation parameters
around $\sin^2({2\theta}) \approx 0.09$ and $\Delta m^2 \approx
1\,\mathrm{eV}^2$. The Stereo experiment was built to finally solve this
puzzle. It is one of the first running experiments built to search for eV
sterile neutrinos and takes data since end of 2016 at ILL Grenoble (France). At
a short baseline of 10 metres, it measures the antineutrino flux and spectrum
emitted by a compact research reactor. The segmentation of the detector in six
target cells allows for measurements of the neutrino spectrum at multiple
baselines. An active-sterile flavour oscillation could be unambiguously
detected, as it distorts the spectral shape of each cell's measurement
differently. This contribution gives an overview on the Stereo experiment,
along with details on the detector design, detection principle and the current
status of data analysis.
