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INVESTMENTS | 12 Months Ended
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Dec. 31, 2020
INVESTMENTS |
INVESTMENTS | NOTE 6 INVESTMENTS The Company’s investment portfolio consisted of marketable equity securities and warrants of certain publicly-traded companies. The following is a summary of the activity in investments for the years ended December 31, 2020 and 2019: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As at | ​ | Additions/ | ​ | ​ | ​ | Disposals/ | ​ | Unrealized | ​ | Fair value
​ | ​ | December 31, | ​ | transfers during | ​ | Net (loss) on | ​ | transfers during | ​ | (loss) on | ​ | December 31,
​ |  | 2019 |  | period |  | securities sold |  | year |  | securities held |  | 2020
Marketable equity securities | ​ | $ | 1,885 | ​ | $ | — | ​ | $ | (619) | ​ | $ | (1,266) | ​ | $ | — | ​ | $ | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As at | ​ | Additions/ | ​ | Net gain | ​ | Disposals/ | ​ | Unrealized | ​ | Fair value
​ | ​ | December 31, | ​ | transfers during | ​ | (loss) on | ​ | transfers during | ​ | gain on | ​ | December 31,
​ |  | 2018 |  | period |  | securities sold |  | year |  | securities held |  | 2019
Marketable equity securities | ​ | $ | 2,718 | ​ | $ | 2,314 | ​ | $ | 3,396 | ​ | $ | (7,279) | ​ | $ | 736 | ​ | $ | 1,885
Warrants | ​ |  | 413 | ​ | ​ | — | ​ | ​ | 1,127 | ​ | ​ | (1,540) | ​ | ​ | — | ​ | ​ | —
Investments | ​ | $ | 3,131 | ​ | $ | 2,314 | ​ | $ | 4,523 | ​ | $ | (8,819) | ​ | $ | 736 | ​ | $ | 1,885
​ ​ During the years ended December 31, 2020, 2019 and 2018, the Company sold marketable equity securities for $1.3 million, $6.8 million and $2.9 million, respectively. As of December 31, 2020, the cost of the marketable equity securities was $nil (December 31, 2019 – $1.3 million).

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- Definition The entire disclosure for cash, cash equivalents, investments in debt and equity instruments (including cost and equity investees and related income statement amounts), equity and cost method investments, investments in joint ventures and any other investment. + References No definition available. + Details
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