Who has been buying Hitachi Construction Machinery Co., Ltd. stock?

8 distinct investors have filed 17 disclosed large-shareholding filings in Hitachi Construction Machinery Co., Ltd. (6305), 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 Hitachi Construction Machinery Co., Ltd. have?

Hitachi Construction Machinery Co., Ltd. has 17 buy-side and 6 sell-side disclosures on record, covering ¥486.5B ($3.1B) in total reported value, spanning 2022-01-20 to 2026-04-22.

Where does StockDrifts get Hitachi Construction Machinery 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.

Hitachi Construction Machinery Co., Ltd. 6305

Company

日立建機株式会社Hitachi Construction Machinery Co., Ltd.

Investors

Buys

Total Value

¥486.5B ($3.1B)

Avg Return

+46.24%

Last Filing

2026-04-22

Hitachi Construction Machinery Co., Ltd. (6305) has 17 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥486.5B ($3.1B) in reported transaction value. The earliest filing StockDrifts holds for Hitachi Construction Machinery Co., Ltd. is dated 2022-01-20; 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 +46.24%, 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	SELL	negotiated	株式会社日立製作所 Hitachi, Ltd.	strategic	21.5M	¥5,056	-4.9%	¥89.0B ($574.0M)
2026-04-22	BUY	unknown	HCJIホールディングス株式会社	other	55.3M	¥5,388	-7.2%	¥297.9B ($1.9B)
2026-04-22	BUY	subscription	シトラスインベストメント合同会社	other	15.7M	¥5,388	-7.2%	¥11.4B ($73.3M)
2025-11-11	SELL	negotiated	株式会社日立製作所 Hitachi, Ltd.	strategic	39.1M	¥4,557	-19.2%	¥68.3B ($440.8M)
2025-04-25	BUY	block_purchase	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥4,076	+33.2%	¥225.4B ($1.5B)
2025-04-25	BUY	block_purchase	シトラスインベストメント合同会社 Citrus Investment LLC	other	13.6M	¥4,076	+33.2%	¥9.6B ($61.7M)
2025-04-21	BUY	Market Buy	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥4,000	+35.8%	¥221.2B ($1.4B)
2025-04-21	BUY	Market Buy	シトラスインベストメント合同会社 Citrus Investment LLC	other	11.3M	¥4,000	+35.8%	¥8.8B ($56.6M)
2025-04-16	BUY	Market Buy	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥3,919	+38.6%	¥216.7B ($1.4B)
2025-04-16	BUY	Market Buy	シトラスインベストメント合同会社 Citrus Investment LLC	other	9.1M	¥3,919	+38.6%	¥8.8B ($56.6M)
2025-04-11	BUY	Market Buy	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥3,767	+44.1%	¥208.3B ($1.3B)
2025-04-11	BUY	Market Buy	シトラスインベストメント合同会社 Citrus Investment LLC	other	6.9M	¥3,767	+44.1%	¥8.4B ($54.4M)
2025-03-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	13.1M	¥4,244	+27.9%	¥1.6B ($10.6M)
2025-03-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	329.2K	¥4,244	-27.9%	¥3.0B ($19.4M)
2025-03-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-10.8K	¥4,244	-27.9%	¥91M ($589K)
2025-03-14	BUY	Market Buy	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥3,997	+35.9%	¥221.0B ($1.4B)
2025-03-14	BUY	Market Buy	シトラスインベストメント合同会社 Citrus Investment LLC	other	4.6M	¥3,997	+35.9%	¥9.2B ($59.4M)
2025-03-07	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	¥3,912	+38.8%	¥1.5B ($9.8M)
2025-03-07	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.0M	¥3,912	+38.8%	¥4.1B ($26.2M)
2025-03-07	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	8.4K	¥3,912	+38.8%	¥33M ($213K)
2025-02-10	BUY	Market Buy	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥3,668	+48.0%	¥202.8B ($1.3B)
2025-02-10	BUY	Market Buy	シトラスインベストメント合同会社 Citrus Investment LLC	other	2.3M	¥3,668	+48.0%	¥8.2B ($52.9M)
2024-12-18	BUY	unknown	シトラスインベストメント合同会社 Citrus Investment LLC	other	55.4M	¥3,436	+58.0%	¥190.3B ($1.2B)
2024-02-07	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	12.3M	¥4,227	+28.5%	¥273M ($1.8M)
2024-01-11	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	12.2M	¥3,943	+37.7%	¥47.7B ($307.9M)
2024-01-11	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	21.6K	¥3,943	+37.7%	¥7.1B ($46.0M)
2023-12-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	6.1M	¥3,793	-43.2%	¥816M ($5.3M)
2023-12-06	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	2.8M	¥3,793	-43.2%	¥6.6B ($42.6M)
2022-08-24	BUY	subscription	HCJIホールディングス合同会社 HCJI Holdings Co., Ltd.	other	55.3M	¥2,943	+84.5%	¥162.7B ($1.0B)
2022-08-24	BUY	subscription	HCJIホールディングス株式会社 HCJI Holdings Co., Ltd.	other	55.3M	¥2,943	+84.5%	¥162.7B ($1.0B)
2022-08-23	SELL	unknown	株式会社日立製作所 Hitachi, Ltd.	other	54.1M	¥2,979	-82.3%	¥164.7B ($1.1B)
2022-08-17	BUY	subscription	HCJIホールディングス合同会社 HCJI Holdings G.K.	other	55.3M	¥2,995	+81.3%	¥165.6B ($1.1B)
2022-05-10	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	6.3M	¥3,030	+79.2%	¥19.1B ($123.4M)
2022-05-10	BUY	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	4.5M	¥3,030	+79.2%	¥13.8B ($88.9M)
2022-01-21	BUY	subscription	HCJIホールディングス合同会社 HCJI Holdings G.K.	other	55.3M	¥2,951	+84.0%	¥163.2B ($1.1B)
2022-01-20	BUY	Market Buy	株式会社日立製作所 Hitachi, Ltd.	corporate	109.4M	¥2,981	+82.2%	¥3.8B ($24.8M)

Frequently asked questions

Who has been buying Hitachi Construction Machinery Co., Ltd. stock?: 8 distinct investors have filed 17 disclosed large-shareholding filings in Hitachi Construction Machinery Co., Ltd. (6305), 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 Hitachi Construction Machinery Co., Ltd. have?: Hitachi Construction Machinery Co., Ltd. has 17 buy-side and 6 sell-side disclosures on record, covering ¥486.5B ($3.1B) in total reported value, spanning 2022-01-20 to 2026-04-22.
Where does StockDrifts get Hitachi Construction Machinery 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 Hitachi Construction Machinery Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.