  Circle geometries are incidence structures that capture the geometry of
circles on spheres, cones and hyperboloids in 3-dimensional space. In a
previous paper, the author characterised the largest intersecting families in
finite ovoidal circle geometries, except for M\"obius planes of odd order. In
this paper we show that also in these M\"obius planes, if the order is greater
than 3, the largest intersecting families are the sets of circles through a
fixed point. We show the same result in the only known family of finite
non-ovoidal circle geometries. Using the same techniques, we show a stability
result on large intersecting families in all ovoidal circle geometries. More
specifically, we prove that an intersecting family $\mathcal F$ in one of the
known finite circle geometries of order $q$, with $|\mathcal F| \geq \frac 1
{\sqrt2} q^2 + 2 \sqrt 2 q + 8$, must consist of circles through a common
point, or through a common nucleus in case of a Laguerre plane of even order.
