Who has been buying Tenox Corporation stock?

6 distinct investors have filed 15 disclosed large-shareholding filings in Tenox Corporation (1905), most recently on 2026-04-30. 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 Tenox Corporation have?

Tenox Corporation has 15 buy-side and 2 sell-side disclosures on record, covering ¥742M ($4.8M) in total reported value, spanning 2021-03-17 to 2026-04-30.

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.

Tenox Corporation 1905

Company

株式会社テノックスTenox Corporation

Investors

Buys

Total Value

¥742M ($4.8M)

Avg Return

+35.77%

Last Filing

2026-04-30

Tenox Corporation (1905) has 15 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥742M ($4.8M) in reported transaction value. The earliest filing StockDrifts holds for Tenox Corporation is dated 2021-03-17; the most recent is 2026-04-30. Across these filings the average return since disclosure is +35.77%, 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
2026-04-30	BUY	Market Buy	光通信株式会社	passive	514.1K	¥1,468	-	-
2026-04-30	BUY	Market Buy	株式会社UH Partners 2	passive	514.3K	¥1,468	-	-
2026-04-30	BUY	Market Buy	株式会社UH Partners 3	passive	164.0K	¥1,468	-1.2%	¥109M ($703K)
2026-04-30	BUY	Market Buy	株式会社エスアイエル	passive	31.9K	¥1,468	-	-
2026-04-30	SELL	unknown	株式会社UH5	unknown	0	¥1,468	+1.2%	¥12M ($77K)
2026-04-30	BUY	Market Buy	株式会社UH6	passive	7.9K	¥1,468	-	¥12M ($75K)
2025-11-25	BUY	Market Buy	株式会社UH Partners 2	passive	514.3K	¥1,266	-	-
2025-11-25	BUY	Market Buy	株式会社UH Partners 3	passive	89.3K	¥1,266	+14.6%	¥86M ($552K)
2025-11-25	BUY	Market Buy	株式会社エスアイエル	passive	31.9K	¥1,266	-	-
2025-11-25	BUY	Market Buy	株式会社UH5	passive	7.9K	¥1,266	-	¥10M ($65K)
2025-11-25	BUY	Market Buy	光通信株式会社	passive	514.1K	¥1,266	-	-
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	514.3K	¥1,391	+4.3%	¥13M ($86K)
2025-09-26	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	22.4K	¥1,391	+4.3%	¥31M ($198K)
2025-09-26	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥1,391	-	-
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥1,391	-	-
2025-07-02	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥1,172	-	-
2025-07-02	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	504.9K	¥1,172	+23.8%	¥87M ($561K)
2025-07-02	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥1,172	-	-
2025-04-14	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥1,033	-	-
2025-04-14	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	430.8K	¥1,033	+40.5%	¥81M ($524K)
2025-04-14	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥1,033	-	-
2024-01-12	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥1,107	-	-
2024-01-12	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	352.1K	¥1,107	+31.1%	¥91M ($588K)
2024-01-12	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥1,107	-	-
2023-07-06	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥1,060	+36.9%	¥25M ($161K)
2023-07-06	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	269.6K	¥1,060	+36.9%	¥52M ($337K)
2023-07-06	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥1,060	+36.9%	¥2M ($10K)
2023-01-31	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥892	-	-
2023-01-31	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	230.8K	¥892	+62.7%	¥69M ($447K)
2023-01-31	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥892	-	-
2022-09-12	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥896	-	-
2022-09-12	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	153.3K	¥896	+61.9%	¥69M ($445K)
2022-09-12	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥896	-	-
2022-04-04	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	514.1K	¥794	-82.8%	¥24M ($158K)
2022-04-04	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	76.2K	¥794	-	¥61M ($390K)
2022-04-04	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	31.9K	¥794	-	¥25M ($163K)
2021-10-25	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	544.5K	¥872	+66.4%	¥71M ($459K)
2021-06-21	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	462.9K	¥897	+61.8%	¥70M ($450K)
2021-03-17	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	385.6K	¥719.793	+101.6%	¥278M ($1.8M)

Frequently asked questions

Who has been buying Tenox Corporation stock?: 6 distinct investors have filed 15 disclosed large-shareholding filings in Tenox Corporation (1905), most recently on 2026-04-30. 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 Tenox Corporation have?: Tenox Corporation has 15 buy-side and 2 sell-side disclosures on record, covering ¥742M ($4.8M) in total reported value, spanning 2021-03-17 to 2026-04-30.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.