Lyft raised $600,000 in a funding round led by Fidelity Management & Research Co., the human cloud, ride-sharing firm announced in a blog post. Senator Investment Group LP joined Fidelity in the capital raise.

The company ranks as the third-largest business-to-consumer human cloud company based on 2017 gross spend, according to a report by Staffing Industry Analysts. Uber ranks as the largest, while China-based human cloud/ride-sharing firm Didi Chuxing ranks second.

“Lyft’s strong momentum has continued in the first half of 2018, with our recently launched new passenger app, an environmental commitment to make all Lyft rides carbon neutral, and our partnership with Magna to develop and scale autonomous vehicle technology,” the company wrote in the post.

The investment brings Lyft’s valuation to $15.1 billion.

And it follows Lyft’s $1.5 billion funding round last year led by CapitalG, an investment unit of Google parent Alphabet.