Tesla shares rally after Elon Musk buys about $1bn of stock
Stock in electric-vehicle maker jumps after regulatory filing discloses purchase
Stock in electric-vehicle maker jumps after regulatory filing discloses purchase

Slide comes after carmaker says second-quarter profits dropped by more than a fifth

Billionaire chief executive threatened to leave the electric vehicle maker if he was not given more stock

Record package of shares wins 75% approval, reinforcing billionaire’s control of electric-car maker

Elon Musk’s carmaker hit by US tariffs, loss of emissions credit revenue and big investments in AI

Net income rises 17% but is still second-weakest figure in five years

Billionaire would need to hit a series of market value and profit goals to earn payout