State Street, Legal & General, and BlackRock all run books that a domestic tilt could shrink
External managers that invest the overseas holdings of the world's largest pension fund earned about 21bn yen (US$129.57m) in fees in the year to March 2025, and Japan's government has now put part of that income in question.
The government wants the Government Pension Investment Fund to invest substantially more at home, finance minister Satsuki Katayama said, according to Reuters.
Investors are now weighing how much of the fund's US$930bn in offshore exposure could return.
Foreign firms oversee nearly all of that offshore book.
GPIF, which holds US$1.8tn in assets, relied almost entirely on 35 external managers to invest internationally, Reuters reported, so any decision to trim foreign holdings would cut directly into the fees those firms collect.
The exposure is uneven.
Sixteen external managers, among them State Street and Legal & General, hold no domestic mandates with the fund, the news agency reported, leaving their GPIF assets vulnerable if foreign portfolios shrink.
BlackRock ran the largest book, at 35.7tn yen (US$220.28bn) in offshore equities and bonds as of March 2025, followed by State Street Investment Management at 18.9tn yen and Legal & General Asset Management at 15.3tn yen, according to the fund's latest annual report.
Foreign work also pays better.
GPIF paid an average of 0.03 percent to foreign equity managers in the fiscal year to March 2025, three times what it paid on domestic equities and bonds, Reuters reported, and 0.01 percent to 0.02 percent on foreign bonds.
That gap is what makes a domestic tilt costly for the incumbents.
Not every manager loses.
"Foreign passive managers could face some pressure, while managers with strong active Japanese capabilities may stand to benefit," Yoon Ng, head of APAC growth solutions at Broadridge, told Reuters.
Asset Management One, Fidelity Investments and Resona Asset Management already run sizeable active Japanese onshore strategies for GPIF and could pick up further allocations under any new approach, a Reuters analysis of the fund's disclosures found.
For the firms exposed, the risk is concrete.
"We are waiting for more details, but if an official directive comes through, we could lose our more profitable foreign investment business," a senior global fund executive at a firm managing GPIF assets told Reuters.
Any exit would be slow rather than abrupt.
Ng said a sudden, wholesale termination of external managers is unlikely, given fiduciary considerations, market impact and transition costs, and the fund typically requires one to three months' notice to end a mandate.
Even a shift within existing target bands could move about US$80bn from foreign bonds to Japanese government bonds, according to Goldman Sachs.
"Such an adjustment would be unlikely to occur all at once, but it reflects some scope for notable flows," Goldman analysts said in a note, adding they remain sceptical of large repatriation flows while GPIF still carries a return target it must meet.
Policymakers cooled the message this week.
Katayama said on Tuesday the government would adjust the allocation only if the investment environment changes sharply, per Reuters.
"The change in environment would include an enhanced appeal of Japanese assets as the government powerfully pushes through its growth strategy," she told a press briefing, adding that any change must be worked out with the health, labour and welfare ministry.
The minister overseeing that ministry played it down further.
The investment environment has held close to the basic portfolio's assumptions, health, labour and welfare minister Kenichiro Ueno said, according to Reuters.
He said GPIF would instead support growth by raising its investments in domestic projects, including "Japanese private equity."
Analysts framed the whole effort as a nudge, not a directive.
Geoffrey Yu, senior EMEA market strategist at BNY, told Reuters the shift would show up in new money rather than active selling, with fresh flows going to the home market in what he called "a slow process."
Tom Nakamura, head of fixed income and currencies at AGF Investments, flagged the execution risk instead.
He told Reuters the danger is that markets "price in the full move immediately," which could be disruptive.
People with knowledge of government deliberations told Reuters that Japan has no immediate plans to change its allocation targets but could work within existing ranges to steer more capital home.
GPIF assesses its portfolio annually, a spokesperson told the news agency.
The fund, along with BlackRock, State Street and Legal & General, did not immediately respond to requests for comment on the impact for external managers.
