While all eyes have been on Tesla's stock market gyrations and its controversial billionaire founder Elon Musk, the company's rising share price has also helped cushion the wild ride for the Aussie executive who replaced him as the car maker's chairman: Robyn Denholm.

Barely a year after the Australian tech industry veteran decided to leave a senior role at Telstra and take the hot seat at Tesla, her stake in the company has soared to more $US105 million ($156 million) when the stock closed above $US800 on Thursday.

Robyn Denholm resigned as Telstra's chief financial officer to take the chair at Tesla. Credit:Ben Rushton

In the most recent company filing on her shareholding last year, Tesla reported its chairman owned more than 130,000 shares, and vested options over shares, in the company.

Ms Denholm also held more than 180,000 options over shares, with 24,000 due to vest into Tesla stock over the past 12 months as compensation for her role heading various board committees.