Matsui Securities is an online broker founded in 1918 and headquartered in Kojimachi, Chiyoda, Tokyo. It offers trading in Japanese and US shares, including cash and margin trading, IPOs, ETFs and REITs, plus stock lending and PTS trading, investment funds, NISA and iDeCo accounts.
It also offers foreign-exchange trading with automated options, futures and options, and its MATSUI Bank service, with trading apps, order tools and market-information services. Customers can get support by phone and online. It had 227 employees as of March 31, 2026.
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