Now, the opposite seems to be observed by the Subaru HSC. leading to this article:
New Map of Dark Matter Spanning 10 Million Galaxies Hints at a Flaw in Our Physics
see: THIS
see also image below: It looks as if Dark Matter concentrations are growing between 6 Gy and 3 Gys. However what we see is the result of galaxy DM lensing !! So if galaxies are later formed than DMatter bubbles, ( as predicted by Quantum FFF Theory) than this image should be reversed . !! see text quote: Visualisation of the dark matter map (lighter = more dark matter) based on the lensing produced by galaxies, indicated by white lines. (HSC project/UTokyo)