Japan's giant public pension fund said Tuesday its total assets swelled to a record ¥130.9 trillion as of Sept. 30, increasing by ¥3.62 trillion over the three months from July.

The Government Pension Investment Fund, the world's largest institutional investor, also said the proportion invested in domestic bonds fell below 50 percent for the first time since it started to manage the pension fund at its own discretion in April 2001.

Prime Minister Shinzo Abe has urged the fund, supervised by the Ministry of Health, Labor and Welfare, to buy more risky assets to seek higher returns, aiming to ensure the long-term sustainability of Japan's universal pension system.