TOKYO—Japan's $1.26 trillion public pension fund will likely announce a boost to stock and foreign-bond investments in early autumn, the head of its investment committee said Tuesday, potentially sending tens of billions of dollars into new markets.
A shuffle at the world's largest pension fund would achieve one of Prime Minister Shinzo Abe's objectives and could help invigorate Japan's economy, which is beginning to emerge from a decadeslong era when investors mostly avoided risk.
"I personally think that we need to complete [the new portfolio] in September or October," Yasuhiro Yonezawa, head of the Government Pension Investment Fund's investment committee, said in an interview. "There's no reason to be slow."
Mr. Yonezawa outlined a tentative plan for a portfolio shift that would put an additional five percentage points of the fund's assets each into domestic stocks, foreign bonds and foreign stocks. The aim is twofold: to boost returns to ensure that Japanese retirees get the payouts they expect, and stimulate risk-taking at home by funneling money into growing Japanese businesses.That is in tune with the prime minister's pro-growth "Abenomics" policies. Since taking office in late 2012, Mr. Abe has exhorted the pension fund to rethink its long-standing conservative investment strategy.
Currently, domestic stocks and foreign stocks are each targeted to get about 12% of the fund's investment. Under the baseline scenario outlined by Mr. Yonezawa, those figures would rise to 17% each, while the portion allotted to foreign bonds would rise to 16% from 11%. Domestic bonds would fall to 40% from 60%, and the portfolio would likely include a new category for alternative investments in areas such as infrastructure, he said.
Mr. Yonezawa said he and two other members of the eight-member investment committee would begin to craft a new portfolio this week.
The figures could change based on the group's discussions, he said, adding that the three members would discuss whether to carry out the reshuffle before or after the announcement set for this autumn.
The changes could raise uncertainty for tens of millions of Japanese who count on steady pension payouts in retirement. With its traditional focus on Japanese sovereign debt, the fund has performed relatively well in recent years despite extremely low debt yields, in part because the country's deflationary environment was good for bonds.
Not everyone in Japan is drinking the Cool-Aid. One apparently retired former GPIF manager does point out the obvious risk. But when Keynesian policy is in full heat, as under the lunacy called Abenomics, everything is a piggy bank.
"The GPIF shouldn't be used as a tool for short-term-oriented intervention in asset markets. It's not a piggy bank for short-term policy purposes. Each penny of the GPIF is pension money," said Nobusuke Tamaki, a former fund official who now teaches at Otsuma Women's University.