It gained more than a 50-percent stake of the company in January this year.

Can I replace 'gained' with 'owned' or 'bought'?
'Bought' is OK, I think, though there are other ways to acquire shares; 'owned' is not good.
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Note also that "bought" implies that the whole stake was bought in January. "gained" could well mean that the January purchase was a smaller one that tipped an existing stake over 50%.
Thanks, Mr M and Mr W.