Stock market - BS. He was a homeless career criminal. No firm would hire him to handle client's money, he had no money to buy or trade stock for himself and we know he was a day laborer. He just lied about his new career to dupe his family into thinking that he had somehow become a responsible adult. I feel sorry for his family and understand how they want this culprit to be anyone other than their son/brother/cousin/etc. and are holding out hope that their loved one is not a cold blooded murdering psycho but the chances that Ingrid drove him to where ever from her house and someone else entered her home, did this horrible deed and then drove her car to where JC ended up 'beaten up and robbed before passing out on the sidewalk' are about the same as winning the lottery.
There are so many victims who are forever changed by the actions of one horribly psychotic evil man that it seems unfair that he can only be punished for what he did to Ingrid. Those little girls will never be the same. What they were before this is not the person they will be now.
IMHO he wanted to kill a beautiful woman who was a loving, good mommy and sought the company of Ingrid as she was the perfect object of his disgusting plan. I will always believe that he gave the Hannibal video to his mom, not as a warning but as a confession; "watch this if you want to understand what I am." Of course, he wasn't a Doctor like Lector, just a mind damaged person with grandiose ideas.
One wonders what else he has done as he moved around the country committing crimes.
Why was his method of disposal so haphazard? Haste. His planning had not gotten to 'what do I do afterwards'.