Guys like this know how to play the money game. He'll come out of this still in fine shape. Ask Trumpy - he'll agree. So he lost a bit - I've lost 25% of my worth in the recent down turn as well, but I'm not crying and neither is he.
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Remember when reading my post: (-1)^½ m (2)^½
Most of us are in the same boat as you as far as "investments" go. The markets will correct. I don't think Elon is about to liquidate anything anyway, as Lyn puts it, it's "artificial" for him in any event.