Who has been buying Hakudo Co., Ltd. stock?

16 distinct investors have filed 17 disclosed large-shareholding filings in Hakudo Co., Ltd. (7637), most recently on 2023-08-28. 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 Hakudo Co., Ltd. have?

Hakudo Co., Ltd. has 17 buy-side and 8 sell-side disclosures on record, covering ¥9.2B ($59.6M) in total reported value, spanning 2022-11-15 to 2023-08-28.

Where does StockDrifts get Hakudo 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.

Hakudo Co., Ltd. 7637

Company

白銅株式会社Hakudo Co., Ltd.

Investors

Buys

Total Value

¥9.2B ($59.6M)

Avg Return

+6.09%

Last Filing

2023-08-28

Hakudo Co., Ltd. (7637) has 17 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥9.2B ($59.6M) in reported transaction value. The earliest filing StockDrifts holds for Hakudo Co., Ltd. is dated 2022-11-15; the most recent is 2023-08-28. 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 +6.09%, 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
2026-06-18	BUY	Market Buy	N&Nアセット・マネジメント合同会社 N&N Asset Management LLC	passive	925.0K	¥3,680	-12.0%	¥3.4B ($22.0M)
2026-06-18	BUY	Market Buy	N&Nアセット・マネジメント合同会社 N&N Asset Management LLC	passive	925.0K	¥3,680	-12.0%	¥3.4B ($22.0M)
2026-05-29	BUY	unknown	山田のどか Nodoka Yamada	strategic	0	¥3,855	-11.8%	-
2026-05-29	BUY	unknown	山田のどか Nodoka Yamada	strategic	0	¥3,855	-11.8%	-
2026-05-29	BUY	unknown	N&Nアセット・マネジメント合同会社 N&N Asset Management LLC	strategic	925.0K	¥3,855	-11.8%	¥3.6B ($23.0M)
2026-05-29	BUY	unknown	N&Nアセット・マネジメント合同会社 N&N Asset Management LLC	strategic	925.0K	¥3,855	-11.8%	¥3.6B ($23.0M)
2023-08-28	BUY	unknown	山田ニコル Nicole Yamada	unknown	0	¥2,304	+6.6%	-
2023-08-28	BUY	unknown	山田ニコル Nicole Yamada	unknown	0	¥2,304	+6.6%	-
2023-08-28	BUY	unknown	キッズラーニングネットワーク株式会社 Kids Learning Network Co., Ltd.	passive	971.0K	¥2,304	+6.6%	¥781M ($5.0M)
2023-08-28	BUY	unknown	有限会社双光 Soko Co., Ltd.	passive	963.0K	¥2,304	+6.6%	¥758M ($4.9M)
2023-08-28	SELL	unknown	山田晋司 YAMADA SHINJI	passive	1.0K	¥2,304	-6.6%	¥596M ($3.8M)
2023-08-28	BUY	unknown	山田哲也 YAMADA TETSUYA	other	10.0K	¥2,304	+6.6%	¥1.5B ($9.6M)
2023-08-28	BUY	unknown	キッズラーニングネットワーク株式会社 Kids Learning Network Co., Ltd.	passive	971.0K	¥2,304	+6.6%	¥781M ($5.0M)
2023-08-28	BUY	unknown	有限会社双光 Soko Co., Ltd.	passive	963.0K	¥2,304	+6.6%	¥836M ($5.4M)
2023-08-28	SELL	unknown	山田晋司 YAMADA SHINJI	passive	1.0K	¥2,304	-6.6%	¥596M ($3.8M)
2023-08-28	BUY	unknown	山田哲也 YAMADA TETSUYA	other	10.0K	¥2,304	+6.6%	¥1.5B ($9.6M)
2023-08-28	SELL	unknown	山田悦弘 YAMADA YOSHIHIRO	unknown	0	¥2,304	-6.6%	¥815M ($5.3M)
2023-08-28	SELL	unknown	山田悦弘 YAMADA YOSHIHIRO	unknown	0	¥2,304	-6.6%	¥815M ($5.3M)
2023-08-24	BUY	unknown	有限会社双光 Soko Co., Ltd.	passive	1.1M	¥2,291	+7.3%	¥387M ($2.5M)
2023-08-24	BUY	unknown	山田哲也 YAMADA TETSUYA	other	10.0K	¥2,291	+7.3%	¥1.5B ($9.6M)
2023-08-24	BUY	unknown	山田ニコル Nicole Yamada	unknown	0	¥2,291	+7.3%	-
2023-08-24	BUY	unknown	キッズラーニングネットワーク株式会社 Kids Learning Network Co., Ltd.	passive	1.1M	¥2,291	+7.3%	¥387M ($2.5M)
2023-08-24	BUY	unknown	山田晋司 YAMADA SHINJI	passive	1.0K	¥2,291	+7.3%	¥2M ($15K)
2023-08-24	BUY	unknown	山田哲也 YAMADA TETSUYA	other	10.0K	¥2,291	+7.3%	¥23M ($148K)
2023-08-24	BUY	Market Buy	キッズラーニングネットワーク株式会社 Kids Learning Network Co., Ltd.	passive	1.1M	¥2,291	+7.3%	¥387M ($2.5M)
2023-08-24	BUY	Market Buy	有限会社双光 Soko Co., Ltd.	passive	1.1M	¥2,291	+7.3%	¥387M ($2.5M)
2023-08-24	BUY	Market Buy	山田哲也 YAMADA TETSUYA	other	10.0K	¥2,291	+7.3%	¥23M ($148K)
2023-08-24	BUY	unknown	キッズラーニングネットワーク株式会社 Kids Learning Network Co., Ltd.	passive	971.0K	¥2,291	+7.3%	¥777M ($5.0M)
2023-08-24	SELL	unknown	有限会社双光 Soko Co., Ltd.	passive	963.0K	¥2,291	-7.3%	¥13.4B ($86.4M)
2023-08-24	BUY	unknown	山田晋司 YAMADA SHINJI	passive	1.0K	¥2,291	+7.3%	¥260M ($1.7M)
2023-08-24	BUY	Market Buy	山田晋司 YAMADA SHINJI	passive	1.0K	¥2,291	+7.3%	¥2M ($15K)
2023-08-24	BUY	unknown	山田悦弘 YAMADA YOSHIHIRO	unknown	0	¥2,291	+7.3%	-
2023-08-21	BUY	unknown	株式会社イーストゲート Eastgate Co., Ltd.	unknown	652.0K	¥2,243	+9.5%	¥1.5B ($9.4M)
2023-08-21	BUY	unknown	山田智則 Tomonori Yamada	unknown	676.0K	¥2,243	+9.5%	¥1.5B ($9.8M)
2023-08-21	BUY	unknown	株式会社イーストゲート Eastgate Co., Ltd.	unknown	652.0K	¥2,243	+9.5%	¥1.5B ($9.4M)
2023-08-21	BUY	unknown	山田光重 Mitsushige Yamada	unknown	290.0K	¥2,243	+9.5%	¥650M ($4.2M)
2023-08-21	BUY	unknown	山田治男 Haruo Yamada	unknown	0	¥2,243	+9.5%	-
2023-08-21	BUY	unknown	山田祐次 Yamada Suketsugu	unknown	3.0K	¥2,243	+9.5%	¥7M ($43K)
2023-08-21	BUY	acquisition	合同会社SYマネジメント SY Management LLC	passive	676.0K	¥2,243	+9.5%	¥1.5B ($9.8M)
2023-08-21	BUY	Market Buy	合同会社SYマネジメント SY Management LLC	passive	676.0K	¥2,243	+9.5%	¥1.5B ($9.8M)
2023-08-21	BUY	unknown	山田光重 Mitsushige Yamada	unknown	290.0K	¥2,243	+9.5%	¥650M ($4.2M)
2023-08-21	BUY	unknown	山田治男 Haruo Yamada	unknown	0	¥2,243	+9.5%	-
2023-08-21	BUY	unknown	山田智則 Tomonori Yamada	unknown	676.0K	¥2,243	+9.5%	¥1.5B ($9.8M)
2023-08-21	BUY	unknown	山田祐次 Yamada Suketsugu	unknown	3.0K	¥2,243	+9.5%	¥7M ($43K)
2023-06-19	BUY	unknown	N&Nアセット・マネジメント合同会社 N&N Asset Management LLC	passive	925.0K	¥2,370	+3.7%	¥804M ($5.2M)
2023-06-19	SELL	unknown	山田のどか Nodoka Yamada	strategic	0	¥2,370	-3.7%	¥807M ($5.2M)
2022-11-16	BUY	unknown	山田広太郎 Kotaro Yamada	corporate	340.0K	¥2,441	+0.7%	¥830M ($5.4M)
2022-11-16	BUY	unknown	K&Pアセット・マネジメント合同会社 K&P Asset Management LLC	strategic	1.0M	¥2,441	+0.7%	¥2.5B ($16.2M)
2022-11-16	BUY	unknown	K&Pアセット・マネジメント合同会社 K&P Asset Management LLC	strategic	1.0M	¥2,441	+0.7%	¥2.5B ($16.2M)
2022-11-16	BUY	unknown	K&Pアセット・マネジメント合同会社 K&P Asset Management LLC	strategic	1.0M	¥2,441	+0.7%	¥2.5B ($16.2M)

Showing the 50 most recent of 58 filings.

Frequently asked questions

Who has been buying Hakudo Co., Ltd. stock?: 16 distinct investors have filed 17 disclosed large-shareholding filings in Hakudo Co., Ltd. (7637), most recently on 2023-08-28. 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 Hakudo Co., Ltd. have?: Hakudo Co., Ltd. has 17 buy-side and 8 sell-side disclosures on record, covering ¥9.2B ($59.6M) in total reported value, spanning 2022-11-15 to 2023-08-28.
Where does StockDrifts get Hakudo 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 Hakudo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.