  Motivated by the recent detection of an enhanced clustering signal along the
major axis of haloes in N-body simulations, we derive a formula for the
anisotropic density distribution around haloes and voids on large scales. Our
model, which assumes linear theory and that the formation and orientation of
nonlinear structures are strongly correlated with the Lagrangian shear, is in
good agreement with measurements. We also show that the measured amplitude is
inconsistent with a model in which the alignment is produced by the initial
inertia rather than shear tensor.
