Justice Ruth Bader Ginsburg was "notorious" for many things, including being one of the fastest opinion writers on the Court. Justice Ginsburg was often the first justice to issue an opinion in an argued case, and almost always got at least one opinion out during the Fall of any given term (a feat that only one justice on the Court was able to accomplish this term).
Justice Amy Coney Barrett, who replaced Justice Ginsburg on the Court, may also be filling Justice Ginsburg's role as the most proficient opinion writer. Justice Barrett was the author of the Court's first majority opinion of the term, a brief, unanimous opinion in Arellano v. McDonough. This opinion was the one-and-only opinion for the Court in an argued case issued last fall. (The Court also issued a one-line per curiam in In re Grand Jury, dismissing that case as improvidently granted.)
