SHAREHOLDER ALERT:Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Riot Blockchain, Inc. f/k/a Bioptix, Inc. of Class Action Lawsuit and Upcoming Deadline

Pomerantz LLP announces that a class action lawsuit has been filed
against Riot Blockchain, Inc. f/k/a Bioptix, Inc. (“Riot” or the

RIOT, -8.03%

and certain of its officers. The class action,
filed in United States District Court, for the District of Colorado, and
Docketed under 18-cv-00440, is on behalf of a class consisting of
investors who purchased or otherwise acquired Riot’s securities between
October 4, 2017 through February 15, 2018, both dates inclusive (the
“Class Period”), seeking to recover damages caused by defendants’
violations of the federal securities laws and to pursue remedies under
Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (the
“Exchange Act”) and Rule 10b-5 promulgated thereunder, against the
Company and certain of its top officials.

If you are a shareholder who purchased Riot securities between October
4, 2017, and February 15, 2018, both dates inclusive, you have until
April 18, 2018, to ask the Court to appoint you as Lead Plaintiff for
the class. A copy of the Complaint can be obtained at
To discuss this action, contact Robert S. Willoughby at
or 888.476.6529 (or 888.4-POMLAW), toll-free, Ext. 9980. Those who
inquire by e-mail are encouraged to include their mailing address,
telephone number, and the number of shares purchased.

here to join this class action]

Riot Blockchain, Inc. purports to operate as a digital currency company.
The Company represents that it focuses on buying cryptocurrency and
blockchain businesses, as well as supporting blockchain technology
companies. Founded in 2000, the Company was formerly known as Bioptix,
Inc. (“Bioptix”) and changed its name to Riot Blockchain, Inc. in
October 2017.

The Complaint alleges that throughout the Class Period, Defendants made
materially false and misleading statements regarding the Company’s
business, operational and compliance policies. Specifically, Defendants
made false and/or misleading statements and/or failed to disclose that:
(i) Riot lacked a meaningful business plan with respect to the
cryptocurrency business and had only minimal investments in
cryptocurrency products; (ii) the Company changed its name to Riot
Blockchain, Inc. as part of a scheme to capitalize on public interest in
cryptocurrency products, thereby driving up the Company’s stock price
and enriching inside shareholders; (iii) Riot never intended to hold its
Annual General Meetings scheduled for December 28, 2017, and February 1,
2018; and (iv) as a result of the foregoing, Riot shares traded at
artificially inflated prices during the Class Period, and class members
suffered significant losses and damages.

On February 16, 2018, CNBC published a report based on an investigation
of Riot. The CNBC report noted that Riot’s “stock shot from $8 a share
to more than $40, as investors wanted to cash in on the craze of all
things crypto”, but that Riot did not appear to have meaningful
involvement in the cryptocurrency business: “Until October, its name was
Bioptix, and it was known for having a veterinary products patent and
developing new ways to test for disease.” In addition, CNBC reported
numerous “red flags” in Riot’s SEC filings: “annual meetings that are
postponed at the last minute, insider selling soon after the name
change, dilutive issuances on favorable terms to large investors, SEC
filings that are often Byzantine and, just this week, evidence that a
major shareholder was getting out while everyone else was getting in.”

On this news, Riot’s share price fell $5.74, or over 33.37%, to close at
$11.46 on February 16, 2018, damaging investors.

The Pomerantz Firm, with offices in New York, Chicago, Los Angeles, and
Paris, is acknowledged as one of the premier firms in the areas of
corporate, securities, and antitrust class litigation. Founded by the
late Abraham L. Pomerantz, known as the dean of the class action bar,
the Pomerantz Firm pioneered the field of securities class actions.
Today, more than 80 years later, the Pomerantz Firm continues in the
tradition he established, fighting for the rights of the victims of
securities fraud, breaches of fiduciary duty, and corporate misconduct.
The Firm has recovered numerous multimillion-dollar damages awards on
behalf of class members. See

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SOURCE: Pomerantz LLP

Pomerantz LLP
Robert S. Willoughby, 888-476-6529 Ext. 9980

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