Electric vehicle manufacturer Rivian Automotive and the Volkswagen Group are partnering up in a nearly $6 billion deal to create a new technology company.

German auto giant Volkswagen has officially launched a joint venture with US electric vehicle manufacturer Rivian, committing to a €5.8 billion ($6.2 billion) investment, €800 million more than previously planned,

Shares of Rivian jumped over 15% after the EV maker announced a $5.8 billion investment from German automaker Volkswagen as part of their joint venture.

Rivian Automotive Inc. and Volkswagen have launched their upsized joint venture, joining forces with the goal of creating “cutting-edge” electric-vehicle technology.

Shares of Rivian jumped over 13% in premarket trading Wednesday after the electric vehicle maker announced a $5.8 billion investment from German automaker Volkswagen as part of their joint venture. The investment boost comes at a crucial time for Rivian,

Volkswagen will invest up to $5.8 billion in Rivian stock and a joint venture—up from a $5 billion deal value envisaged when the collaboration was announced in June. Rivian stoc