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Kyoei Tanker Co., Ltd. 9130

Company
共栄タンカー株式会社Kyoei Tanker Co., Ltd.
Investors
4
Buys
2
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. 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 -19.04%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-04-22BUYMarket 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
passive393.2K¥1,645-18.0%¥647M ($4.2M)
2026-03-18SELLunknown
コスモ石油プロパティサービス株式会社
COSMO OIL PROPERTY SERVICE CO., LTD.
unknown0¥2,381+27.4%¥1.2B ($7.7M)
2026-03-18BUYunknown
コスモ石油株式会社
COSMO OIL CO., LTD.
other500.0K¥2,381-27.4%¥1.2B ($7.7M)
2026-03-18BUYunknown
コスモ石油プロパティサービス株式会社
COSMO OIL PROPERTY SERVICE CO., LTD.
other500.0K¥2,381-27.4%¥1.2B ($7.7M)
2026-02-05SELLunknown
三井住友海上火災保険株式会社
Mitsui Sumitomo Insurance Co.,Ltd.
other327.0K¥1,185-45.8%¥96M ($620K)
2025-09-04SELLunknown
三井住友海上火災保険株式会社
Mitsui Sumitomo Insurance Co.,Ltd.
strategic408.0K¥1,068-61.8%¥86M ($553K)
2025-04-07SELLunknown
三井住友海上火災保険株式会社
Mitsui Sumitomo Insurance Co.,Ltd.
strategic488.0K¥800-116.0%¥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.
Where does StockDrifts get Kyoei Tanker 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 Kyoei Tanker Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.