SAN FRANCISCO, May 6- Human-resources software company Zenefits said it had raised $500 million in venture funding, giving it a valuation of $4.5 billion and confirming a drop in appetite among venture-backed companies for initial public offerings. Zenefits was founded just two years ago, making its trajectory to the " Unicorn Club" of start-ups valued at $1...» Read More
Matt Hunter is the senior technology editor at CNBC.com.
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