Segment has raised $300 million through multiple funding rounds, culminating in a $175M Series D in April 2019 led by Accel, Google Ventures, and Meritech Capital at a $1.5B valuation. Earlier rounds include a $64M Series C (2017) backed by GV and Y Combinator, and earlier seed and Series A/B investments totaling over $20M from firms such as Thrive Capital and Headline. Segment’s acquisition by Twilio in 2020 further validated its strong backing from leading investors. The company remains one of the most well-funded customer data infrastructure platforms globally.