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MARKETABLE SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2020
Marketable Securities [Abstract]  
Schedule of marketable securities

Marketable securities in equity securities with readily determinable market prices consisted of the following as of December 31, 2020 and 2019:

 

    Marketable equity securities at December 31, 2020  
          Gross unrealized   Gross realized        
    Cost     gains (losses)   gains (losses)   Fair value  
Common shares   $ 1,505,686     $ 1,083,532   $ (26,235)   $ 2,562,983  
       
    Marketable equity securities at December 31, 2019  
          Gross unrealized   Gross realized        
    Cost     gains (losses)   gains (losses)   Fair value  
Common shares   $ 423,025     $ 216,622   $   -   $ 639,647
Schedule of additional information about marketable securities

The following table presents additional information about marketable equity securities:

 

    Marketable  
    Equity Securities  
Balance at January 1, 2019   $ 178,597  
Purchases of marketable equity securities     485,000  
Marketable equity securities received upon warrant exercise     381  
Marketable equity securities received upon conversion of preferred stock     202,145  
Sales of marketable equity securities     (580,721 )
Realized gains on marketable equity securities     95,340  
Unrealized gains on marketable equity securities     258,905  
Balance at January 1, 2020   $ 639,647  
Purchases of marketable equity securities     1,425,341  
Sales of marketable equity securities     (373,360 )
Realized gains on marketable equity securities     75,346  
Unrealized gains on marketable equity securities     796,009  
Balance at December 31, 2020   $ 2,562,983