Who has been buying HASEKO Corporation stock?

5 distinct investors have filed 8 disclosed large-shareholding filings in HASEKO Corporation (1808), most recently on 2026-01-08. 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 HASEKO Corporation have?

HASEKO Corporation has 8 buy-side and 1 sell-side disclosures on record, covering ¥104.1B ($671.4M) in total reported value, spanning 2021-09-22 to 2026-01-08.

Where does StockDrifts get HASEKO 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.

HASEKO Corporation 1808

Company

株式会社長谷工コーポレーションHASEKO Corporation

Investors

Buys

Total Value

¥104.1B ($671.4M)

Avg Return

+58.27%

Last Filing

2026-01-08

HASEKO Corporation (1808) has 8 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥104.1B ($671.4M) in reported transaction value. The earliest filing StockDrifts holds for HASEKO Corporation is dated 2021-09-22; the most recent is 2026-01-08. 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 +58.27%, 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
2026-05-19	BUY	Market Buy	いちごアセットマネジメント株式会社	engagement	100	¥2,790.5	-3.6%	¥279K ($2K)
2026-05-19	SELL	Market Buy	いちごトラスト・ピーティーイー・リミテッド Ichigo Trust Pte. Ltd.	passive	0	¥2,790.5	+3.6%	¥142.5B ($919.4M)
2026-05-19	BUY	block_purchase	いちごアセットマネジメント・インターナショナル・ピーティーイー・リミテッド Ichigo Asset Management International, Pte. Ltd.	passive	52.9M	¥2,790.5	-3.6%	¥147.7B ($953.1M)
2026-01-08	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	14.9M	¥3,167	-10.9%	¥47.3B ($305.1M)
2024-02-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	85.4K	¥1,918	+47.1%	¥8.3B ($53.6M)
2024-02-07	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	10.5M	¥1,918	+47.1%	¥19.9B ($128.2M)
2023-12-07	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	4.7M	¥1,821.5	+54.9%	¥8.5B ($55.2M)
2023-12-07	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	10.8M	¥1,821.5	+54.9%	¥19.7B ($127.4M)
2021-11-18	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	12.7M	¥1,465	+92.6%	¥18.5B ($119.2M)
2021-11-18	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	620.3K	¥1,465	-92.6%	¥2.1B ($13.6M)
2021-11-18	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	50.8K	¥1,465	+92.6%	¥4.4B ($28.4M)
2021-09-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	14.5M	¥1,500	+88.1%	¥21.4B ($138.3M)
2021-09-22	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.1M	¥1,500	+88.1%	¥3.1B ($20.0M)
2021-09-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	42.8K	¥1,500	+88.1%	¥64M ($415K)

Frequently asked questions

Who has been buying HASEKO Corporation stock?: 5 distinct investors have filed 8 disclosed large-shareholding filings in HASEKO Corporation (1808), most recently on 2026-01-08. 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 HASEKO Corporation have?: HASEKO Corporation has 8 buy-side and 1 sell-side disclosures on record, covering ¥104.1B ($671.4M) in total reported value, spanning 2021-09-22 to 2026-01-08.
Where does StockDrifts get HASEKO 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 HASEKO Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.