Simplex Asset Management Raises Stake in Japan Aviation Electronics Industry (6807) to 12.74% | Large Shareholding Report

A large shareholding report (EDINET filing) shows that Simplex Asset Management Co., Ltd. has raised its stake in Japan Aviation Electronics Industry (6807) to 12.74%. The filing was made by a domestically independent registered investment management company. The company manufactures and sells electronic components, connectors, and wiring products for aircraft and automobiles, making Simplex's 12.74% holding a substantial stake representing a material portion of the company's market capitalization. The stake increased by 1.06 percentage points from the prior disclosure.

Simplex Asset Management holds stakes exceeding 5% in a total of 14 listed companies. Chemical companies feature prominently in the portfolio: Ishihara Chemical Co., Ltd. (4462, Chemicals, 10.68%) and Japan Chemical Industry Co., Ltd. (4094, Chemicals, 8.43%) sit alongside Japan Aviation Electronics (12.74%). The manager also holds positions in Toyo Technics (8151, Wholesale, 8.77%), Nakanishi Manufacturing Co., Ltd. (5941, Metal Products, 8.43%), and Mitsubishi Logisnext Co., Ltd. (7105, 7.97%), reflecting diversification across manufacturing and wholesale sectors with no pronounced concentration in a single industry.

The investment campaign began in May 2026 at a 5.3% stake, with the holding built up systematically across five disclosures over approximately four months to reach 12.74% today. This 7.44 percentage point increase documents a measured accumulation of the position through successive tranches.

Within Japan Aviation Electronics' shareholder structure, Kyocera Corporation dominates with 31.62% as the largest shareholder, while Simplex Asset Management ranks as the second-largest with 12.74%. NEC holds only 0.49%, making Simplex the company's second most significant investor.

At the disclosure date, the stock traded at ¥2,421 per share with a PER of 22.7x and PBR of 1.11x. The 52-week positioning placed it at the 26% mark of its annual range, indicating operations near the lower end of the year's trading band. *Speculation: The systematic accumulation during a low-risk environment suggests Simplex Asset Management views the company's operational foundation and medium-term earnings capacity favorably.