Sources: Jack Ma and Joe Tsai become Alibaba's largest shareholders after buying shares worth ~$50M and ~$150M, respectively, in Q4, together eclipsing SoftBank (Zhou Xin/South China Morning Post)

Zhou Xin / South China Morning Post:

Sources: Jack Ma and Joe Tsai become Alibaba’s largest shareholders after buying shares worth ~$50M and ~$150M, respectively, in Q4, together eclipsing SoftBank  —  – Ma, who retired as Alibaba’s executive chairman in 2019, bought about US$50 million of stock in the fourth quarter, raising his stake to more than 4.3 per cent