https:// en.wikipedia.org/wiki/Jim_Breyer
In 1987 he accepted a job with the venture capital firm Accel Partners in San Francisco and was mentored by founders Arthur Patterson and Jim Swartz. In 1990, he was named a partner and in 1995, he became a managing partner.
Accel Partners was Facebook's biggest shareholder after Mark Zuckerberg, owning an 11% stake at the time of the company's IPO. In 2005, Breyer led Accel Partners' $12.7 million deposit at a $98 million valuation in the then ten-employee startup Facebook. In 2000, Breyer also established Accel-KKR, a joint venture between Accel Partners and the private equity firm KKR. Breyer also led the 2004 management buyout of BBN Technologies from Verizon.
Breyer has led several Series A investments, including Etsy,Clinkle and Circle Internet Financial. He has also led investments in Legendary Pictures and Spotify. Forbes said of Breyer, "He glides easily within and between circles: Silicon Valley, China, Europe, and Hollywood
In December 2017, Breyer announced that he was looking into blockchain technology. Just as China is ahead of the US in mobile payments and is investing heavily in artificial intelligence research, Chinese companies are not ignoring the immense potential of blockchain technology