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

4 distinct investors have filed 4 disclosed large-shareholding filings in Tokuden Co., Ltd. (3437), most recently on 2025-09-26. 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 Tokuden Co., Ltd. have?

Tokuden Co., Ltd. has 4 buy-side and 1 sell-side disclosures on record, covering ¥88M ($567K) in total reported value, spanning 2021-11-29 to 2025-09-26.

Where does StockDrifts get Tokuden 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.

Tokuden Co., Ltd. 3437

Company

特殊電極株式会社Tokuden Co., Ltd.

Investors

Buys

Total Value

¥88M ($567K)

Avg Return

+29.16%

Last Filing

2025-09-26

Tokuden Co., Ltd. (3437) has 4 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥88M ($567K) in reported transaction value. The earliest filing StockDrifts holds for Tokuden Co., Ltd. is dated 2021-11-29; the most recent is 2025-09-26. 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 +29.16%, 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
2026-07-23	SELL	unknown	株式会社UH Partners 3	unknown	0	¥2,762	+0.4%	¥304M ($2.0M)
2026-07-23	SELL	unknown	株式会社エスアイエル	unknown	0	¥2,762	+0.4%	¥62M ($397K)
2026-07-23	SELL	unknown	株式会社UH Partners 2	unknown	0	¥2,762	+0.4%	¥432M ($2.8M)
2026-07-23	SELL	unknown	光通信株式会社	unknown	0	¥2,762	+0.4%	¥370M ($2.4M)
2026-07-17	BUY	unknown	株式会社平山ホールディングス HIRAYAMA HOLDINGS Co.,Ltd.	corporate	422.9K	¥2,736	+0.5%	¥1.2B ($7.5M)
2026-06-05	BUY	Market Buy	株式会社UH Partners 2	passive	156.4K	¥2,758	-4.6%	¥431M ($2.8M)
2026-06-05	BUY	Market Buy	株式会社エスアイエル	passive	22.3K	¥2,758	-4.6%	¥62M ($397K)
2026-06-05	BUY	Market Buy	株式会社UH Partners 3	passive	110.1K	¥2,758	-4.6%	¥304M ($2.0M)
2026-06-05	BUY	Market Buy	光通信株式会社	passive	134.1K	¥2,758	-4.6%	¥370M ($2.4M)
2025-09-26	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	110.1K	¥2,944	+6.3%	¥40M ($256K)
2025-09-26	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	22.3K	¥2,944	+6.3%	¥66M ($424K)
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	156.4K	¥2,944	+6.3%	¥460M ($3.0M)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	134.1K	¥2,944	+6.3%	¥395M ($2.5M)
2022-01-18	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	22.3K	¥2,266	+38.1%	¥51M ($326K)
2022-01-18	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	96.6K	¥2,266	+38.1%	¥1M ($7K)
2022-01-18	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	156.4K	¥2,266	+38.1%	¥354M ($2.3M)
2022-01-18	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	134.1K	¥2,266	-38.1%	¥50M ($326K)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	156.4K	¥2,300	+36.1%	¥360M ($2.3M)
2021-11-29	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	96.2K	¥2,300	+36.1%	¥24M ($152K)
2021-11-29	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	96.2K	¥2,300	+36.1%	¥24M ($152K)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	156.4K	¥2,300	+36.1%	¥360M ($2.3M)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	156.4K	¥2,300	+36.1%	¥360M ($2.3M)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	156.4K	¥2,300	+36.1%	¥360M ($2.3M)

Frequently asked questions

Who has been buying Tokuden Co., Ltd. stock?: 4 distinct investors have filed 4 disclosed large-shareholding filings in Tokuden Co., Ltd. (3437), most recently on 2025-09-26. 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 Tokuden Co., Ltd. have?: Tokuden Co., Ltd. has 4 buy-side and 1 sell-side disclosures on record, covering ¥88M ($567K) in total reported value, spanning 2021-11-29 to 2025-09-26.
Where does StockDrifts get Tokuden 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 Tokuden Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.