--- title: "What is a Series B round? | Datahyena" url: https://datahyena.com/glossary/series-b/ description: "A Series B round funds a company that has proven its model and is scaling hard. Definition, how it differs from Series A, and how it appears as a funding signal." --- [โ† Glossary](https://datahyena.com/glossary) # Series B A Series B is a later venture round raised by a company that has proven its business model and is scaling rapidly, used to expand the team, enter new markets, and grow revenue. A Series B follows the Series A once a company has demonstrated that its model works and growth is repeatable. The money funds aggressive scaling: building out sales and marketing, expanding into new markets or products, and making the larger hires that come with a bigger organization. Series B rounds are typically larger than Series A and may bring in growth-stage funds alongside the company's existing investors. Expectations around revenue, retention, and unit economics are higher than at earlier stages. For go-to-market teams, a Series B is a signal that a company is well-funded, expanding fast, and likely to be re-evaluating its tools and vendors as it grows. In Datahyena Series B rounds appear in the funding-events feed with round set to 'series_b', the amount, investors, date, and the sources that reported it, from GET /v1/funding-events. [Get your API key โ†’](https://app.datahyena.com/register) [View the API](https://datahyena.com/docs/api-reference) Related terms - [Series A](https://datahyena.com/glossary/series-a) - [Series C](https://datahyena.com/glossary/series-c) - [Down round](https://datahyena.com/glossary/down-round) ## Common questions More on series b. How is Series B different from Series A? Series A funds scaling a product with early traction; Series B funds a company that has already proven the model and is scaling rapidly, usually with a larger round and higher growth expectations. ## Start pulling signals in minutes. Create a key, claim your 50 free credits, and make your first request today. No sales call, no credit card. [Get your API key โ†’](https://app.datahyena.com/register) [Read the docs](https://datahyena.com/docs) 50 free credits ยท no credit card