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Elon Musk has lost $13 billion so far in 2023, according to the Bloomberg Billionaires Index. Musk lost the most money of any billionaire in 2022 as Tesla shares tumbled. He's the only person to lose $200 billion, per Bloomberg, but is still worth $124 billion.Elon Musk left 2022 as the first and only person in history to lose $200 billion from their net worth, and he's already lost $13 billion so far in...