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Equity securities and other investments (Tables) | 6 Months Ended
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Sep. 30, 2020
Schedule of equity securities and other investments at cost and at fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of March 31, 2020
​ |  | ​ |  | Gross |  | Gross |  | Provision |  | ​
​ | ​ | Original | ​ | unrealized | ​ | unrealized | ​ | for decline | ​ | Carrying
​ |  | cost |  | gains |  | losses |  | in value |  | value
​ | ​ | (in millions of RMB)
Equity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Listed equity securities | ​ | 68,488 | ​ | 18,070 | ​ | (20,255) | ​ | — | ​ | 66,303
Investments in privately held companies |  | 92,832 | ​ | 19,601 | ​ | (815) | ​ | (24,065) | ​ | 87,553
Debt investments (i) | ​ | 14,685 | ​ | 13 | ​ | (1,555) | ​ | (1,436) | ​ | 11,707
​ |  | 176,005 | ​ | 37,684 | ​ | (22,625) | ​ | (25,501) | ​ | 165,563
​ ​
10. | Equity securities and other investments (Continued)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of September 30, 2020
​ |  | ​ |  | Gross |  | Gross |  | Provision |  | ​
​ | ​ | Original | ​ | unrealized | ​ | unrealized | ​ | for decline | ​ | Carrying
​ |  | cost |  | gains |  | losses |  | in value |  | value
​ | ​ | (in millions of RMB)
Equity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Listed equity securities |  | 70,204 | ​ | 38,783 | ​ | (13,412) | ​ | — | ​ | 95,575
Investments in privately held companies | ​ | 93,593 | ​ | 20,019 | ​ | (1,353) | ​ | (29,138) | ​ | 83,121
Debt investments (i) |  | 17,984 | ​ | 56 | ​ | (1,780) | ​ | (1,031) | ​ | 15,229
​ |  | 181,781 | ​ | 58,858 | ​ | (16,545) | ​ | (30,169) | ​ | 193,925
​
| (i) | Debt investments include convertible and exchangeable bonds accounted for under the fair value option, for which the fair value as of March 31, 2020 and September 30, 2020 were RMB4,704 million and RMB5,936 million, respectively. The aggregate fair value of these convertible and exchangeable bonds was lower than their aggregate unpaid principal balance as of March 31, 2020 and September 30, 2020 by RMB1,576 million and RMB1,802 million, respectively. Net losses from fair value changes recorded on convertible and exchangeable bonds in the condensed consolidated income statements were RMB753 million and RMB271 million during the six months ended September 30, 2019 and 2020, respectively.
Schedule of equity securities, a summary of gains and losses, including impairment losses, recognized in interest and investment income, net | ​
​ | ​ | ​ | ​ | ​
​ |  | Six months ended
​ | ​ | September 30,
​ |  | 2019 |  | 2020
​ | ​ | (in millions of RMB)
Net unrealized (losses) gains recognized during the period for equity securities still held as of the end of the period | ​ | (9,624) | ​ | 25,940
Net gains recognized during the period from disposals of equity securities during the period |  | 496 | ​ | 3
Net (losses) gains recognized during the period on equity securities |  | (9,128) | ​ | 25,943

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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