Keiretsu Forum | 44,975 followers on LinkedIn. "Great Association with Quality Deal Flow"​ ​Keiretsu Forum is the most active global investment community. | Keiretsu Forum is a global investment community of accredited private equity investors, venture capitalists and corporate/institutional investors. Keiretsu Forum members invest in high-quality, diverse investment opportunities. The community is strengthened through its involvement in social and charitable activities.