Shares of SpaceX rallied by just over 12% shortly after trading opened on Tuesday, raising its market value to about $2.8 trillion and ranking it ahead of Amazon ($2.6 trillion) as the fifth-largest company.

A further boost to SpaceX’s stock marks a nearly 35% rally since its IPO on Friday, when shares closed up 19%, and a 19.5% surge on Monday.

The latest increase in SpaceX shares added $119.1 to Musk’s net worth, valued at about $1.4 trillion, ranking him more than $1 trillion ahead of Google cofounder Larry Page ($300.7 billion), who Forbes ranks as the world’s second-richest person.

Musk holds 4.8 billion SpaceX shares, bringing his stake to about 38%, with an additional 350 million stock options with an exercise price of $8.40 per share.