Dataminr has secured fresh investment three years after Fidelity and Credit Suisse backed a $130m series D round.

Dataminr, a US-based social media data aggregator backed by financial services group Fidelity and financial services firm Credit Suisse, raised $221m from unnamed backers yesterday, according to a securities filing.

Founded in 2009, Dataminr has developed technology to detect, classify and determine the significance of public information on social media in real time. The information is used by Dataminr’s clients to tap into developing trends and stories.

Dataminr has raised more than $380m to date. It previously obtained $130m in…