On the nature of the X(3872)

We present recent studies of charmonium multiquark states. We use different interacting models and numerical methods to study deeply bound four-quark states and meson-meson molecules. No deeply bound four-quark states are found in our analysis. A nice description of the X(3872) is obtained as a $D{\bar{D}}^{\ast }-J\mathrm{/}\mathrm{\Psi }\omega$ coupled channel state.