Exclusive: Japan’s Rakuten Wins the Heart of Pinterest in $100M Funding Race With $1.5B ValuationExclusive: Japan’s Rakuten Wins the Heart of Pinterest in $100M Funding Race With $1.5B Valuation Rakuten, which runs the largest e-commerce site in Japan, is expected to be the lead investor in the much-contested next round of funding for Silicon Valley’s hottest start-up, Pinterest. The funding is expected to be announced tomorrow morning. (Update: Rakuten confirmed the deal in a press release,
