"Simply put, retaining and incentivizing Elon is fundamental to Tesla achieving these goals and becoming the most valuable company in history," Tesla board chair Robyn Denholm and director Kathleen W...

But given the meteoric rise in Oracle Corp.’s ORCL stock price on Wednesday and so far this year, Larry Ellison, the company’s co-founder, now appears to be top dog — at least for now.

The jump came after shares in Oracle, which make up a significant part of Ellison's fortune, soared more than 40%, boosted by the database software company's surprisingly rosy outlook for its cloud i...