One hundred and eight pages. A 3-2-1-2 split, with a separate concurrence and a recusal. Justice Breyer sided with the conservative wing of the court. Justice Sotomayor wrote for 57 pages in dissent, and got personal with the other justices, leading to a two-page separate concurrence/rebuttal by Chief Justice Roberts.
In other words, this is a massive headache of an opinion, with a holding that narrows past SCOTUS precedent and allows states to ban race conscious admissions policies.