Fizzer?, page-183

I wonder if there's a term for someone who buys high without having a clue what they bought... But then can't bring themselves/afford to accept the loss so they average down and get it wrong again... Then they get really angry at the company rather than themselves and start trying to talk it down at any point... But at the same stage they want it to go up because they can't afford the loss... So they try to bait others more informed than them into sharing their insights in the hope it reassures them... Because they are struggling to cope with the anxiety of their situation.

Aside from inept, not in control, insecure...And just plain laughable... Anyone know of any other terms for such a person?

Actually I know, you would call them a galah.