Who has been buying Keikyu Corporation stock?

19 distinct investors have filed 11 disclosed large-shareholding filings in Keikyu Corporation (9006), most recently on 2026-03-24. 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 Keikyu Corporation have?

Keikyu Corporation has 11 buy-side and 25 sell-side disclosures on record, covering ¥51.8B ($334.3M) in total reported value, spanning 2021-04-21 to 2026-03-24.

Where does StockDrifts get Keikyu Corporation 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.

Keikyu Corporation 9006

Company

京浜急行電鉄株式会社Keikyu Corporation

Investors

Buys

Total Value

¥51.8B ($334.3M)

Avg Return

+11.84%

Last Filing

2026-03-24

Keikyu Corporation (9006) has 11 disclosed large-shareholding filings and 25 disclosed disposals on record, filed by 19 distinct investors. Together those filings cover ¥51.8B ($334.3M) in reported transaction value. The earliest filing StockDrifts holds for Keikyu Corporation is dated 2021-04-21; the most recent is 2026-03-24. 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 +11.84%, 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
2026-07-06	BUY	Market Buy	株式会社ATRA	activist	19.2M	¥1,564.5	-3.1%	¥4.4B ($28.1M)
2026-07-06	BUY	unknown	野村絢	activist	6.0M	¥1,564.5	-3.1%	¥9.4B ($60.9M)
2026-07-06	BUY	unknown	株式会社シティインデックスイレブンス	activist	100	¥1,564.5	-3.1%	¥156K ($1K)
2026-03-24	BUY	Market Buy	株式会社ATRA	activist	16.4M	¥1,505.5	+3.4%	¥25.5B ($164.4M)
2026-03-24	BUY	Market Buy	野村絢	activist	6.0M	¥1,505.5	-3.4%	¥9.4B ($60.5M)
2026-03-24	BUY	Market Buy	株式会社シティインデックスイレブンス	activist	100	¥1,505.5	-3.4%	¥156K ($1K)
2026-01-21	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	3.5M	¥1,544.5	-0.8%	¥5.4B ($34.9M)
2026-01-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	5.8M	¥1,544.5	-0.8%	¥9.0B ($57.9M)
2026-01-21	SELL	unknown	三井住友信託銀行株式会社	other	3.4M	¥1,544.5	-0.8%	¥5.3B ($34.3M)
2025-12-22	SELL	unknown	アセットマネジメントOne株式会社	other	4.8M	¥1,513.5	-2.8%	¥7.5B ($48.7M)
2025-12-22	SELL	unknown	みずほ信託銀行株式会社	strategic	3.6M	¥1,513.5	-2.8%	¥5.7B ($36.5M)
2025-12-22	BUY	unknown	みずほ証券株式会社	other	1.1M	¥1,513.5	-2.8%	¥1.7B ($11.0M)
2025-12-22	SELL	unknown	株式会社みずほ銀行	strategic	3.8M	¥1,513.5	-2.8%	¥5.9B ($38.3M)
2025-11-05	BUY	Market Buy	株式会社ATRA ATRA Co., Ltd.	activist	13.5M	¥1,471	+5.8%	¥19.9B ($128.1M)
2025-11-05	BUY	Market Buy	野村絢 Aya Nomura (Murakami family)	activist	6.0M	¥1,471	+5.8%	¥8.9B ($57.2M)
2025-11-05	SELL	Market Buy	株式会社フォルティス Fortis Co., Ltd.	unknown	0	¥1,471	-5.8%	¥24.3B ($156.5M)
2025-11-05	SELL	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	100	¥1,471	-5.8%	¥122M ($785K)
2025-09-19	SELL	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	3.8M	¥1,540	-1.1%	¥679M ($4.4M)
2025-09-19	BUY	Market Buy	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	6.9M	¥1,540	+1.1%	¥764M ($4.9M)
2025-09-19	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	other	5.1M	¥1,540	+1.1%	¥7.9B ($50.9M)
2025-03-06	BUY	Market Buy	株式会社フォルティス Fortis Co., Ltd.	activist	16.5M	¥1,555	+0.1%	¥25.7B ($165.6M)
2025-03-06	SELL	Market Buy	野村絢 Aya Nomura (Murakami family)	unknown	0	¥1,555	-0.1%	¥21.9B ($141.1M)
2025-03-06	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	87.9K	¥1,555	+0.1%	¥8.6B ($55.3M)
2025-02-20	BUY	unknown	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	30.0K	¥1,530	+1.7%	¥46M ($296K)
2025-02-20	BUY	unknown	野村絢 Aya Nomura (Murakami family)	activist	14.1M	¥1,530	+1.7%	¥21.5B ($138.9M)
2024-09-06	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	5.9M	¥1,171	+32.9%	¥1.3B ($8.5M)
2024-09-06	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	4.1M	¥1,171	-32.9%	¥775M ($5.0M)
2024-09-06	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	6.7M	¥1,171	-32.9%	¥3.3B ($21.5M)
2024-06-06	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	4.2M	¥1,157	+34.5%	¥574M ($3.7M)
2024-06-06	SELL	unknown	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	6.4M	¥1,157	-34.5%	¥2.4B ($15.4M)
2024-06-06	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	other	5.1M	¥1,157	-34.5%	¥2.0B ($12.8M)
2023-08-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	4.8M	¥1,303	-19.5%	¥2.3B ($14.6M)
2023-08-22	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	4.8M	¥1,303	-19.5%	¥36M ($232K)
2023-08-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	105.8K	¥1,303	+19.5%	¥13.0B ($84.1M)
2023-08-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	9.5M	¥1,303	+19.5%	¥12.4B ($80.0M)
2021-12-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	6.5M	¥1,168	-33.3%	¥2.4B ($15.8M)
2021-12-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	4.8M	¥1,168	+33.3%	¥5.6B ($36.3M)
2021-12-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	1.0M	¥1,168	+33.3%	¥1.2B ($7.6M)
2021-12-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	9.5M	¥1,168	+33.3%	¥11.1B ($71.7M)
2021-07-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	3.7M	¥1,331	+16.9%	¥4.9B ($31.7M)
2021-07-21	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	8.5M	¥1,331	+16.9%	¥184M ($1.2M)
2021-07-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	6.8M	¥1,331	+16.9%	¥9.1B ($58.6M)
2021-06-04	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	254.6K	¥1,485	-4.8%	¥778M ($5.0M)
2021-06-04	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	1.4M	¥1,485	-4.8%	¥3.0B ($19.6M)
2021-06-04	SELL	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	2.3M	¥1,485	-4.8%	¥2.1B ($13.7M)
2021-06-04	SELL	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	356.1K	¥1,485	-4.8%	¥942M ($6.1M)
2021-06-04	SELL	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	0	¥1,485	-4.8%	¥655M ($4.2M)
2021-06-04	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	518.9K	¥1,485	+4.8%	¥205M ($1.3M)
2021-06-04	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	326.0K	¥1,485	+4.8%	¥484M ($3.1M)
2021-06-04	SELL	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	2.8M	¥1,485	-4.8%	¥2.1B ($13.5M)

Showing the 50 most recent of 53 filings.

Frequently asked questions

Who has been buying Keikyu Corporation stock?: 19 distinct investors have filed 11 disclosed large-shareholding filings in Keikyu Corporation (9006), most recently on 2026-03-24. 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 Keikyu Corporation have?: Keikyu Corporation has 11 buy-side and 25 sell-side disclosures on record, covering ¥51.8B ($334.3M) in total reported value, spanning 2021-04-21 to 2026-03-24.
Where does StockDrifts get Keikyu Corporation 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 Keikyu Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.