Japan Post Bank is considering an investment of about 20% in online broker Matsui Securities, Nikkei and Kyodo reported on 28 October 2026. Both companies said they are discussing a tie-up but that nothing has been decided.
Why Japan Post Bank Co., Ltd. is buying Matsui Securities Co., Ltd. (about 20% stake)
Kyodo reported that Japan Post Bank wants to use its large domestic customer base to enter retail share brokerage, while Matsui wants more customers as competition among online brokers increases.
Deal terms and financing
No price or structure has been disclosed. Matsui said its discussions with Japan Post Bank include an investment in Matsui. Japan Post Bank said it is considering tie-ups with brokers including Matsui under the consulting strategy in its medium-term plan.
Regulatory approvals and timing
Kyodo reported that both boards are expected to make a formal decision in early November.
Market context
Japan Post Bank's three-year medium-term plan, which began in fiscal 2026, includes offering new financial products and services. Kyodo said Matsui is looking to survive intensifying competition in online brokerage.
