Weekday Japan business intelligence for finance professionals.

Join the list
Tokyo Brief東 京 ブ リ ー フ

Japan's day, wrapped and delivered by morning.

Article

Two Asset Managers Cross the 5% Line in Aozora Bank

Sumitomo Mitsui Trust Asset Management and a second Tokyo-registered fund manager now jointly hold 5.01% of Aozora Bank, a stake built through routine portfolio mandates rather than any push for board influence.

Aug 20, 20262 min read
Editorial illustration of two shareholding bars crossing a five percent threshold line above stacked ledger books on a bank counter.

Sumitomo Mitsui Trust Asset Management and a second Tokyo-registered investment manager have jointly crossed the 5% disclosure threshold in Aozora Bank, according to a large shareholding report filed with the Director of the Kanto Local Finance Bureau on August 20, 2026. The reporting obligation was triggered on August 14, 2026, the date the two managers' combined position reached 7,006,600 shares, equal to 5.01% of Aozora Bank's 139,789,418 shares outstanding.

Sumitomo Mitsui Trust Asset Management holds 4,384,800 shares, a 3.14% stake, while the second manager holds 2,621,800 shares, or 1.88%. Both filers list the shares as held under investment trust contracts and discretionary investment mandates, the standard purpose declaration that keeps a filing in the "special exception" category set aside for institutional money managers rather than for buyers seeking board influence.

Aozora Bank: joint large shareholding, as of August 14, 2026
Based on the large shareholding report filed with Japan's Kanto Local Finance Bureau on August 20, 2026.
HolderSharesStake
Sumitomo Mitsui Trust Asset Management4,384,8003.14%
Second Tokyo asset manager (joint holder)2,621,8001.88%
Combined stake7,006,6005.01%

The filing also discloses securities lending tied to the position. Sumitomo Mitsui Trust Asset Management has lent 122,400 shares to Goldman Sachs Securities and 416,400 shares to Morgan Stanley MUFG Securities, posting 1,900 and 7,800 shares respectively as substitute collateral. The second manager has lent shares to five brokers: 177,000 to JPMorgan Securities, 1,376,300 to Goldman Sachs Securities, 16,500 to Citigroup Securities, 100 to Mizuho Securities, and 2,700 to Tokai Tokyo Securities.

Aozora Bank trades on the Tokyo Stock Exchange under code 8304. The report was filed under the special-exception provisions of Article 27-26 of Japan's financial instruments law, the route used by institutional holders whose stakes build up through ordinary fund management rather than a deliberate campaign for influence. The filing states there are no other joint holders beyond the two named managers, but it does not say whether the pair coordinate voting decisions.