Who has been buying Denyo Co., Ltd. stock?

4 distinct investors have filed 8 disclosed large-shareholding filings in Denyo Co., Ltd. (6517), most recently on 2025-10-17. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does Denyo Co., Ltd. have?

Denyo Co., Ltd. has 8 buy-side and 3 sell-side disclosures on record, covering ¥346M ($2.2M) in total reported value, spanning 2021-05-12 to 2025-10-17.

Where does StockDrifts get Denyo Co., Ltd. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Denyo Co., Ltd. 6517

Company

デンヨー株式会社Denyo Co., Ltd.

Investors

Buys

Total Value

¥346M ($2.2M)

Avg Return

+68.31%

Last Filing

2025-10-17

Denyo Co., Ltd. (6517) has 8 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥346M ($2.2M) in reported transaction value. The earliest filing StockDrifts holds for Denyo Co., Ltd. is dated 2021-05-12; the most recent is 2025-10-17. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +68.31%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-08-07	SELL	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	activist	2.8M	¥4,215	+0.6%	¥995M ($6.4M)
2025-10-17	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	activist	3.0M	¥2,875	+23.1%	¥346M ($2.2M)
2025-06-06	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	activist	2.9M	¥2,779	+27.4%	¥620M ($4.0M)
2024-12-12	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	activist	2.8M	¥2,833	+25.0%	¥661M ($4.3M)
2022-12-06	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	activist	2.5M	¥1,500	+136.0%	¥343M ($2.2M)
2021-12-07	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	activist	2.3M	¥1,721	+105.7%	¥441M ($2.8M)
2021-11-30	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.1M	¥1,657	-113.6%	¥45M ($293K)
2021-11-30	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	370.8K	¥1,657	-113.6%	¥197M ($1.3M)
2021-11-30	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	751.2K	¥1,657	-113.6%	¥110M ($709K)
2021-11-08	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	passive	2.1M	¥1,978	+79.0%	¥525M ($3.4M)
2021-08-20	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	passive	1.8M	¥2,036	+73.9%	¥475M ($3.1M)
2021-05-12	BUY	Market Buy	シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.) Symphony Financial Partners (Singapore) Pte. Ltd.	passive	1.6M	¥2,006	+76.5%	¥715M ($4.6M)

Frequently asked questions

Who has been buying Denyo Co., Ltd. stock?: 4 distinct investors have filed 8 disclosed large-shareholding filings in Denyo Co., Ltd. (6517), most recently on 2025-10-17. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does Denyo Co., Ltd. have?: Denyo Co., Ltd. has 8 buy-side and 3 sell-side disclosures on record, covering ¥346M ($2.2M) in total reported value, spanning 2021-05-12 to 2025-10-17.
Where does StockDrifts get Denyo Co., Ltd. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Denyo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.