Several Vietnamese banks, including MB, BIDV, VIB, HDBank, and VietABank, are scheduled to pay dividends and issue bonus shares, with billions of shares expected to be distributed.
Bonus share issuances dilute existing shareholders by increasing total share count, which mechanically reduces earnings per share and book value per share; for MB specifically, the scale of issuance (described as billions of shares across the group) makes the dilution effect material to per-share metrics. Dividend payments in share form also affect free float and may pressure the share price on ex-dividend dates.