Itβs dot-com mania all over again as the SEC suspends trading of a zero revenue Blockchain company with a market cap exceeding $800 mln. The regulator cites βunusual and unexplained market activity.β #NEWS via ICGO https://www.icgo.co.uk/redirect/?url=https://cointelegraph.com/news/sec-suspends-trading-of-ubi-blockchain-following-unexplained-market-activity