Thomas Gilbert Sr., a founding managing partner of the hedge fund Wainscott Capital, was found dead in his apartment in January 2015 with a gunshot wound to the head.
Gilbert’s attorneys did not dispute that he killed his father but said he was not guilty by reason of insanity. Jurors dismissed the insanity defense; they also found him guilty on two counts of criminal possession of a weapon in the second degree. He was found not guilty of criminal possession of forgery devices.
Sentencing is set for August. The murder charge carries a sentence of 25 years to life in prison.
Gilbert, 34, played football at Princeton and graduated with a degree in economics. At the time of the shooting, he was 30 and unemployed, receiving up to $1,000 a week from his parents.
Hours before Thomas Sr. was killed, he cut his son’s weekly allowance to $300, prosecutors said.
Gilbert’s attorneys did not immediately respond to requests for comment.