Kearns, 20, killed himself after his Robinhood account showed a negative balance of more than $700,000, according to a series of tweets by a relative. The figure may have been temporary and would have been updated when stocks underlying his assigned options settled to his account, according to the relative. But Kearns believed it reflected how much leverage he had, according to the note, which was provided to Bloomberg by his family.

Robinhood is also making a $250,000 donation to the American Foundation for Suicide Prevention, according to the blog.