In 2007, ADVFN bought Investorshub.com Inc. I suppose, if you were a victim, you could indeed sue Investorshub.com Inc. since it's an entity. Like a dirty Pink Sheets shell, they don't lose liability if it changes hands.
If I was ADVFN after buying the company, I'd have transferred the asset not left it in the old shell. Now it's too late since moving it would be a conveyance that could be reversed.
Under the civil statutes, you have 2 years to sue for securities fraud from the time you could reasonably have known.
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