Two affiliated Tokyo investment holding companies raised their combined stake in Seiko Group Corporation (TSE: 8050) to 12.07% from 11.57%, according to the fourteenth amendment to their large-shareholding report, filed with Japan's Financial Services Agency on August 18, 2026 and covering changes triggered on August 12. The increase landed even as the larger of the two filers sold shares and left more than eight million shares pledged as loan collateral.
| Filer | Shares Held | Current Stake | Prior Stake |
|---|---|---|---|
| Primary filer (Ginza-based holding company) | 8,751,000 | 10.57% | 10.72% |
| Joint holder (affiliated Ginza company) | 1,246,600 | 1.51% | 0.85% |
| Combined total | 9,997,600 | 12.07% | 11.57% |
The primary filer, a real-estate and securities holding company registered in Tokyo's Ginza district, now holds 8,751,000 Seiko Group shares, or 10.57% of the 82,808,522 shares outstanding, down from 10.72% in its prior report. The drop follows two off-market disposals on August 12: 82,000 shares and 40,000 shares, both sold at ¥11,240 apiece, a combined 122,000 shares. The same filer has pledged 8,121,000 of its remaining shares, more than nine in ten of its holding, to Mizuho Bank under a banking-transaction agreement and loan contract backing ¥3.0bn in borrowings. Its cumulative funding for the position totals ¥3.66bn, split between ¥656.4mn of its own money and that ¥3.0bn loan.
Its joint holder, a related company also registered in Ginza, moved the other way. Its stake rose to 1.51% (1,246,600 shares) from 0.85%, but the gain came from a two-for-one stock split executed on April 1, 2026, which added 623,300 shares to its position, not from a market purchase. The joint holder's entire position was funded with ¥2.93bn of its own capital, and the filing records no borrowing against it.
Both filers describe their purpose as a "policy investment" held to keep Seiko Group's management stable, and both report no material proposals or demands attached to the stake. They share the same registered address in Ginza, five-chome, and the filing lists the same representative and the same in-house contact person and phone number for both entities, pointing to a coordinated affiliate relationship rather than two independent investors moving in parallel.