Oaktree Capital founder Howard Marks has bitcoin on his mind. Marks, who called bitcoin, the digital coin up over 350% this year, a "fad" in a July memo, has warmed up to it after receiving backlash from the cryptocurrency community. Marks revisited his thoughts on the digital coin in a wide-ranging memo sent out to clients on Thursday. The long and short of the note: Marks has changed his mind, but he still has reservations. Marks concedes he might have been too quick to dismiss the idea that bitcoin can be considered a currency akin to the US dollar. "What bitcoin partisans have told me subsequently is that bitcoin ... (full story)