The book offers a behind-the-scenes look at Trump's presidency

SpaceX’s stock has sunk more than 31% since hitting a peak of $225.64 on June 16, dropping Musk’s estimated net worth from an all-time high of $1.45 trillion to just under $1.1 trillion Monday. Monday’s drop alone wiped out more than $152 billion from Musk’s net worth, according to Forbes estimates.