The number of securities accounts for Internet trading came to about 1.93 million at the end of March, up 610,000 from half a year earlier, according to the Japan Securities Dealers Association.
The association said in a report that the value of Internet-assisted stock transactions was 8.069 trillion yen for the period between October and March, accounting for 6.3 percent of the country's total brokerage trading.
It said the number of people involved in stock investment has been on the rise, especially those who have never participated in stock transactions and people in their 50s, as Internet services through mobile phones have become increasingly popular.
Of 290 brokerages surveyed, the number of those offering Internet trading services came to 67 at the end of March, up three from the end of September, the association said.