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CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Tables) | 6 Months Ended
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Jun. 30, 2024
CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS |
Schedule of cash, cash equivalents and short-term investments | Cash, cash equivalents and short-term investments for the periods presented consist of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of
​ | ​ | June 30, 2024 |  | December 31, 2023
Cash | ​ | $ | 6,126 | ​ | $ | 8,247
Money market funds | ​ |  | 13,805 | ​ |  | 9,685
US treasury bills | ​ |  | 4,963 | ​ |  | 12,594
Government-sponsored enterprise securities | ​ |  | 10,444 | ​ |  | 11,233
Corporate bonds and commercial paper | ​ |  | 13,764 | ​ |  | 15,174
​ | ​ | $ | 49,102 | ​ | $ | 56,933
Reported as: | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 36,053 | ​ | $ | 32,786
Short-term investments | ​ |  | 13,049 | ​ |  | 24,147
​ | ​ | $ | 49,102 | ​ | $ | 56,933
Schedule of cash equivalents and short-term investments including securities with unrealized gains and losses | Cash equivalents and short-term investments include the following securities with gross unrealized gains and losses (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​ |
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | ​ | ​ |
As of June 30, 2024 | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Fair Value |
US treasury bills | ​ | $ | 4,963 | ​ | $ | — | ​ | $ | — | ​ | $ | 4,963 | ​
Government-sponsored enterprise securities | ​ | ​ | 10,446 | ​ | ​ | — | ​ | ​ | (2) | ​ | ​ | 10,444 | ​
Corporate bonds and commercial paper | ​ |  | 13,771 | ​ |  | — | ​ |  | (7) | ​ |  | 13,764 | ​
Total | ​ | $ | 29,180 | ​ | $ | — | ​ | $ | (9) | ​ | $ | 29,171 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​ |
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | ​ | ​ |
As of December 31, 2023 | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Fair Value |
US treasury bills | ​ | $ | 12,591 | ​ | $ | 3 | ​ | $ | — | ​ | $ | 12,594 | ​
Government-sponsored enterprise securities | ​ | ​ | 11,230 | ​ | ​ | 7 | ​ | ​ | (4) | ​ | ​ | 11,233 | ​
Corporate bonds and commercial paper | ​ |  | 15,172 | ​ |  | 5 | ​ |  | (3) | ​ |  | 15,174 | ​
Total | ​ | $ | 38,993 | ​ | $ | 15 | ​ | $ | (7) | ​ | $ | 39,001 | ​
Schedule of fair value and gross unrealized losses of investments in unrealized loss position | The following table shows the fair value and gross unrealized losses of our investments in individual securities that are in an unrealized loss position, aggregated by investment category (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of June 30, 2024 |  | Fair Value |  | Unrealized Losses |
Government-sponsored enterprise securities | ​ | $ | 9,694 | ​ | $ | (2) | ​
Corporate bonds and commercial paper | ​ | ​ | 13,265 | ​ | ​ | (7) | ​
Total | ​ | $ | 22,959 | ​ | $ | (9) | ​
​

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