Slack, a year-old group messaging platform, is now officially a $2.8 billion company
The round includes Horizons Ventures, Digital Sky Technologies (DST Global), Index Ventures, Spark Capital, and Institutional Venture Partners (IVP) with the participation of past Slack investors including Accel Partners, Andreessen Horowitz, The Social+Capital Partnership, Google Ventures, and Kleiner Perkins Caufield & Byers.
News of the fundraise broke last month.
This means Slack has more than doubled its valuation over the course of the past six months. In October, the company raised $120 million, which made it worth $1.12 billion. This also comes less than two years after the app officially launched in August 2013.