He is a business owner, a 99pc shareholder in public speaking venture Santoro Projects. Its most recent accounts show cash in the bank of £985. After four years trading net assets are £10,048 - in the red.
How a man who has never been authorised by the Financial Services Authority and has no discernible history working for a City institution ended up being interviewed by the BBC remains a mystery.
The incongruity led to some commentators speculating Mr Rastani was a professional hoaxer. The BBC denied the allegation: "We've carried out detailed investigations and can't find any evidence to suggest that the interview with Alessio Rastani was a hoax."
However, the BBC declined to comment on what checks, if any, it had done prior to the interview.
Mr Rastani was a little more forthcoming.
"They approached me," he told
The Telegraph. "I'm an attention seeker. That is the main reason I speak. That is the reason I agreed to go on the BBC. Trading is a like a hobby. It is not a business. I am a talker. I talk a lot. I love the whole idea of public speaking."
So he's more of a talker than a trader. A man who doesn't own the house he lives in, but can sum up the financial crisis in just three minutes – a knack that escapes many financial commentators.
"I agreed to go on because I'm attention seeker," he said on Tuesday. "But I meant every word I said."
Jonathan Russell @
'The Telegraph'