Who has been buying Japan Oil Transportation Co., Ltd. stock?

6 distinct investors have filed 13 disclosed large-shareholding filings in Japan Oil Transportation Co., Ltd. (9074), most recently on 2025-09-29. 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 Japan Oil Transportation Co., Ltd. have?

Japan Oil Transportation Co., Ltd. has 13 buy-side and 5 sell-side disclosures on record, covering ¥1.0B ($6.7M) in total reported value, spanning 2021-09-21 to 2025-09-29.

Where does StockDrifts get Japan Oil Transportation 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.

Japan Oil Transportation Co., Ltd. 9074

Company

日本石油輸送株式会社Japan Oil Transportation Co., Ltd.

Investors

Buys

Total Value

¥1.0B ($6.7M)

Avg Return

+79.26%

Last Filing

2025-09-29

Japan Oil Transportation Co., Ltd. (9074) has 13 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.0B ($6.7M) in reported transaction value. The earliest filing StockDrifts holds for Japan Oil Transportation Co., Ltd. is dated 2021-09-21; the most recent is 2025-09-29. 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 +79.26%, 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
2025-09-29	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	83.4K	¥4,065	+24.2%	¥118M ($758K)
2025-09-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	247.1K	¥4,065	+24.2%	¥1.0B ($6.5M)
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥4,065	+24.2%	¥1.0B ($6.5M)
2025-05-09	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	54.6K	¥3,105	+62.6%	¥104M ($672K)
2025-05-09	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	247.1K	¥3,105	+62.6%	¥767M ($4.9M)
2025-05-09	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥3,105	+62.6%	¥768M ($5.0M)
2024-08-23	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥2,822	+79.0%	¥698M ($4.5M)
2024-08-23	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	20.8K	¥2,822	+79.0%	¥59M ($379K)
2024-08-23	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	247.1K	¥2,822	+79.0%	¥36M ($230K)
2024-05-08	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	9.9K	¥2,802	-80.2%	¥29M ($186K)
2024-05-08	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	13.9K	¥2,802	+80.2%	¥35M ($224K)
2024-05-08	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	3.5K	¥2,802	+80.2%	¥10M ($63K)
2024-05-07	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	234.5K	¥2,783	+81.5%	¥405M ($2.6M)
2024-05-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥2,783	+81.5%	¥689M ($4.4M)
2023-12-15	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	89.0K	¥2,876	+75.6%	¥97M ($629K)
2023-12-15	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥2,876	+75.6%	¥712M ($4.6M)
2023-10-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	55.3K	¥2,819	+79.1%	¥94M ($604K)
2023-10-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥2,819	+79.1%	¥697M ($4.5M)
2023-08-21	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	20.2K	¥2,479	-103.7%	¥24M ($154K)
2023-08-21	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	155.2K	¥2,479	-103.7%	¥51M ($330K)
2023-08-21	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	3.5K	¥2,479	-103.7%	¥8M ($53K)
2023-08-07	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	22.0K	¥2,504	+101.7%	¥55M ($355K)
2023-08-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	247.4K	¥2,504	+101.7%	¥31M ($199K)
2023-05-22	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	235.3K	¥2,710	+86.3%	¥95M ($610K)
2021-12-21	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	200.4K	¥2,638	+91.4%	¥89M ($577K)
2021-10-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	29.9K	¥2,661	+89.8%	¥27M ($177K)
2021-10-06	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	175.9K	¥2,661	+89.8%	¥22M ($143K)
2021-10-06	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	7.0K	¥2,661	-89.8%	¥97M ($628K)
2021-09-21	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	166.5K	¥2,671	+89.1%	¥445M ($2.9M)

Frequently asked questions

Who has been buying Japan Oil Transportation Co., Ltd. stock?: 6 distinct investors have filed 13 disclosed large-shareholding filings in Japan Oil Transportation Co., Ltd. (9074), most recently on 2025-09-29. 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 Japan Oil Transportation Co., Ltd. have?: Japan Oil Transportation Co., Ltd. has 13 buy-side and 5 sell-side disclosures on record, covering ¥1.0B ($6.7M) in total reported value, spanning 2021-09-21 to 2025-09-29.
Where does StockDrifts get Japan Oil Transportation 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 Japan Oil Transportation Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.