answer: Sam warns that #Person1# will lose money if #Person1# doesn't sell the shares now.
documents: #Person1#: Sam, what shall I do with my stocks? Will I lose money? 
  #Person2#: There's a possibility. 
  #Person1#: What do you mean by that? 
  #Person2#: I mean if you don't sell your shares now, it's quite likely that you'll end up losing your shirt. 
  #Person1#: Is that so? 
  #Person2#: Absolutely. Take my word for it.