"Tyhee Gold Corporation represents in its public filings that it is engaged in the exploration and development of mineral properties in Canada. The company is incorporated under the laws of British Columbia and located in Vancouver. The company is publicly traded on the TSX Venture Exchange under the symbol TDC. Since 2010, Tyhee’s stock has not traded above $0.20 (CAD) per share. During the relevant time period, Tyhee did not earn revenue from operations and repeatedly disclosed that it may not be able to continue as a going concern in the
normal course of its operations. From 2012 to March 2014, Interinvest accounted for more than half of Tyhee’s daily trading volume on 40% of all trading days."...
https://www.sec.gov/litigation/complaints/2015/comp-pr2015-122.pdf