From the article: > This would be just weeks after it raised $150 million at a $1 billion valuation, and only three months after raising at a $300 million valu

From the article: > This would be just weeks after it raised $150 million at a $1 billion valuation, and only three months after raising at a $300 million valuation. Venture capitalists have never before participated in such a rapid and rocketing price spike.