Katsenelson, CFA, is director of research at Investment Management Associates in Denver, and he teaches a graduate investment class at the University of Colorado at Denver.

FORBES: Magazine Article

Holmes, a former graduate student at the University of Colorado, Denver, had seen a psychiatrist at the school before the shootings.

NPR: Colo. Judge Enters Not Guilty Plea For Holmes

Dr. Timothy Vollmer, the director of Neurology Clinical Research at the University of Colorado-Denver, even says that such activity can be beneficial.

CNN: STORY HIGHLIGHTS

At the time of the shooting, Mr Holmes was a graduate student in neuroscience at the University of Colorado in Denver, but was withdrawing from his studies after failing a key exam.

BBC: Aurora shooting: Not guilty plea entered for James Holmes

Mr Holmes, 24, was a graduate student in neuroscience at the University of Colorado in Denver but was withdrawing from his studies after failing a key exam.

BBC: Aurora shootings: James Holmes 'threatened professor'

Holmes was a doctoral student in Aurora, in the neuroscience program at the Anschutz Medical Campus of the University of Colorado, Denver, until he withdrew a month before being arrested outside the bullet-riddled movie theater.

CNN: STORY HIGHLIGHTS

Holmes was a doctoral student in the neuroscience program at the Anschutz Medical Campus of the University of Colorado, Denver, in Aurora, until he withdrew a month before being arrested outside the bullet-riddled movie theater.

CNN: STORY HIGHLIGHTS

At least 14 people have filed legal documents indicating they are planning to sue the University of Colorado Denver and Fenton for negligence.

CNN: Holmes' doctor warned that he was dangerous