
Shares dropped 6.6% to $34.40 as of 9:38 a.m., on track to erase about $1.8 billion in market value, after Musk backed out of an agreement to buy the social-media giant and take it private. Shares in Tesla Inc., the electric carmaker that Musk leads, fell about 1%.Shares dropped 6.6% to $34.40 as of 9:38 a.m., on track to erase about $1.8 billion in market value, after Musk backed out of an agreement to buy the social-media giant and take it private. Shares in Tesla Inc., the electric carmaker that Musk leads, fell about 1%.