SecurityBIOP / Riot Blockchain, Inc. (767292905)
President, CEO, ChairmanO'Rourke John R. III
IndustryIn Vitro and In Vivo Diagnostic Substances
Institutional Owners2
Common Shares Outstanding13,475,132 shares (as of 2018-03-31)
Related RIOT / Riot Blockchain Inc

Institutional Stock Ownership and Shareholders()

Riot Blockchain, Inc. (NASDAQ:BIOP) has 2 institutional investors and shareholders that have filed 13D/G or 13F forms with the Securities Exchange Commission (SEC). Largest shareholders include Group One Trading, L.p., Group One Trading, L.p., and Simplex Trading, Llc.
Riot Blockchain, Inc. (NASDAQ:BIOP) ownership structure shows current positions in the company by institutions and funds, as well as latest changes in position size. Major shareholders can include individual investors, mutual funds, hedge funds, or institutions. The Schedule 13D indicates that the investor holds more than 5% of the company and intends to actively pursue a change in business strategy. Schedule 13G indicates a passive investment of over 5%. Green rows indicate new positions. Red rows indicate closed positions. Click the link icon to see the full transaction history.

File DateFormInvestor Opt Prev
Shares
Current
Shares
Change
(Percent)
Prev Value
($1000)
Current Value
($1000)
Change
(Percent)
2018-05-16 13F-HR/A GROUP ONE TRADING, L.P. Call 381,500 2,526
2018-05-09 13F-HR Marathon Trading Investment Management LLC Call 106,100 0 -100.00 3,013 0
2018-05-02 13F-HR SNS Financial Group, LLC Call 108,900 0 -100.00 0 0
2018-05-14 13F-HR North Fourth Asset Management, Lp Put 5,000 0 -100.00 142 0
2018-04-26 13F-HR SIMPLEX TRADING, LLC Call 3,027 725 -76.05 1,031 20 -98.06
2018-05-16 13F-HR/A GROUP ONE TRADING, L.P. Put 141,100 934

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CUSIP: 767292905