Who has been buying Kyoei Tanker Co., Ltd. stock?

4 distinct investors have filed 2 disclosed large-shareholding filings in Kyoei Tanker Co., Ltd. (9130), most recently on 2026-04-22. 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 Kyoei Tanker Co., Ltd. have?

Kyoei Tanker Co., Ltd. has 2 buy-side and 4 sell-side disclosures on record, covering ¥1.8B ($11.9M) in total reported value, spanning 2025-04-07 to 2026-04-22.

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.

Kyoei Tanker Co., Ltd. 9130

Company

共栄タンカー株式会社Kyoei Tanker Co., Ltd.

Investors

Buys

Total Value

¥1.8B ($11.9M)

Avg Return

-19.04%

Last Filing

2026-04-22

Kyoei Tanker Co., Ltd. (9130) has 2 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.8B ($11.9M) in reported transaction value. The earliest filing StockDrifts holds for Kyoei Tanker Co., Ltd. is dated 2025-04-07; the most recent is 2026-04-22. Across these filings the average return since disclosure is -19.04%, 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
2026-04-22	BUY	Market Buy	アローストリート・キャピタル・リミテッド・パートナーシップ(Arrowstreet Capital, Limited Partnership) Arrowstreet Capital, Limited Partnership	passive	393.2K	¥1,645	+9.4%	¥647M ($4.2M)
2026-03-18	BUY	unknown	コスモ石油株式会社 COSMO OIL CO., LTD.	other	500.0K	¥2,381	-24.4%	¥1.2B ($7.7M)
2026-03-18	BUY	unknown	コスモ石油プロパティサービス株式会社 COSMO OIL PROPERTY SERVICE CO., LTD.	other	500.0K	¥2,381	-	-
2026-03-18	SELL	unknown	コスモ石油プロパティサービス株式会社 COSMO OIL PROPERTY SERVICE CO., LTD.	unknown	0	¥2,381	+24.4%	¥1.2B ($7.7M)
2026-02-05	SELL	unknown	三井住友海上火災保険株式会社 Mitsui Sumitomo Insurance Co.,Ltd.	other	327.0K	¥1,185	-51.8%	¥96M ($620K)
2025-09-04	SELL	unknown	三井住友海上火災保険株式会社 Mitsui Sumitomo Insurance Co.,Ltd.	strategic	408.0K	¥1,068	-68.5%	¥86M ($553K)
2025-04-07	SELL	unknown	三井住友海上火災保険株式会社 Mitsui Sumitomo Insurance Co.,Ltd.	strategic	488.0K	¥800	-124.9%	¥64M ($411K)

Frequently asked questions

Who has been buying Kyoei Tanker Co., Ltd. stock?: 4 distinct investors have filed 2 disclosed large-shareholding filings in Kyoei Tanker Co., Ltd. (9130), most recently on 2026-04-22. 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 Kyoei Tanker Co., Ltd. have?: Kyoei Tanker Co., Ltd. has 2 buy-side and 4 sell-side disclosures on record, covering ¥1.8B ($11.9M) in total reported value, spanning 2025-04-07 to 2026-04-22.
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.