Judge Carlos Samour took a full hour to read out the verdicts relating to each of the 82 victims hit when Holmes opened fire at a packed midnight screening of "The Dark Knight Rises" in the town of Aurora, just outside Denver.
The 27-year-old Holmes, dressed in a blue shirt and cream-colored trousers with his hands in his pockets, showed no emotion as the verdicts were read out yesterday.
Yesterday, the jury foreman handed over a thick stack of verdict forms, representing the scale of the atrocity: in all, Holmes faced 164 charges of murder and attempted murder, as well as one count of possession of explosives.
There was some relief at the verdicts.
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"I felt so much relief and closure," Jansen Young, whose boyfriend Jon Blunk died trying to protect her from the bullets with his body, was quoted by the Denver Post as saying.
Jurors were relatively quick to reach their verdicts: they only retired to deliberate Wednesday on whether Holmes -- who has been in custody since he was arrested outside the theater -- was sane when he opened fire.
Wrapping up the trial on Tuesday, prosecutor George Brauchler ran through a blow-by-blow account of the massacre, which stunned America and reignited the country's perennial debate about gun control.
"Instead a different figure appeared by the screen dressed all in black. And he came there with one thing in his heart and in his mind -- and that was mass murder," the prosecutor said.
But Holmes' defense lawyer Dan King insisted his client was insane, saying: "The fact of the matter is that when Mr Holmes stepped into that theater... He had lost touch with reality.