Who has been buying Daido Kogyo Co., Ltd. stock?

12 distinct investors have filed 6 disclosed large-shareholding filings in Daido Kogyo Co., Ltd. (6373), most recently on 2025-06-06. 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 Daido Kogyo Co., Ltd. have?

Daido Kogyo Co., Ltd. has 6 buy-side and 8 sell-side disclosures on record, covering ¥567M ($3.7M) in total reported value, spanning 2021-04-21 to 2025-06-06.

Where does StockDrifts get Daido Kogyo 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.

Daido Kogyo Co., Ltd. 6373

Company

大同工業株式会社Daido Kogyo Co., Ltd.

Investors

Buys

Total Value

¥567M ($3.7M)

Avg Return

+73.20%

Last Filing

2025-06-06

Daido Kogyo Co., Ltd. (6373) has 6 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥567M ($3.7M) in reported transaction value. The earliest filing StockDrifts holds for Daido Kogyo Co., Ltd. is dated 2021-04-21; the most recent is 2025-06-06. 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 +73.20%, 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
2025-06-06	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	35.6K	¥1,119	+33.1%	¥40M ($257K)
2025-06-06	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	129.2K	¥1,119	+33.1%	¥145M ($932K)
2025-06-06	SELL	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	105.3K	¥1,119	-33.1%	¥355M ($2.3M)
2023-06-21	BUY	Market Buy	株式会社飯田 Iida Co.,Ltd	passive	709.0K	¥732	+103.4%	¥118M ($764K)
2023-06-20	BUY	Market Buy	株式会社飯田 Iida Co.,Ltd	passive	709.0K	¥730	+104.0%	¥133M ($859K)
2022-11-21	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	111.9K	¥764	-94.9%	¥38M ($242K)
2022-11-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	240.3K	¥764	-94.9%	¥18M ($113K)
2022-11-21	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	unknown	0	¥764	-94.9%	¥179M ($1.2M)
2022-06-07	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	421.6K	¥862	+72.7%	¥363M ($2.3M)
2022-06-07	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	129.2K	¥862	+72.7%	¥111M ($718K)
2022-04-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	183.9K	¥919	-62.0%	¥64M ($415K)
2022-04-22	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	258.3K	¥919	-62.0%	¥38M ($246K)
2022-03-22	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	258.3K	¥933	-59.6%	¥39M ($250K)
2022-03-22	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	51.7K	¥933	+59.6%	¥22M ($145K)
2022-03-22	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	186.6K	¥933	-59.6%	¥89M ($572K)
2022-02-04	BUY	Market Buy	株式会社飯田 Iida Co.,Ltd	passive	547.0K	¥942	+58.1%	¥515M ($3.3M)
2022-02-04	BUY	Market Buy	株式会社飯田 Iida Co.,Ltd	passive	547.0K	¥942	+58.1%	¥515M ($3.3M)
2021-04-21	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	160.9K	¥902	+65.1%	¥48M ($312K)
2021-04-21	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	263.5K	¥902	+65.1%	¥51M ($331K)
2021-04-21	BUY	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	235.2K	¥902	+65.1%	¥212M ($1.4M)

Frequently asked questions

Who has been buying Daido Kogyo Co., Ltd. stock?: 12 distinct investors have filed 6 disclosed large-shareholding filings in Daido Kogyo Co., Ltd. (6373), most recently on 2025-06-06. 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 Daido Kogyo Co., Ltd. have?: Daido Kogyo Co., Ltd. has 6 buy-side and 8 sell-side disclosures on record, covering ¥567M ($3.7M) in total reported value, spanning 2021-04-21 to 2025-06-06.
Where does StockDrifts get Daido Kogyo 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 Daido Kogyo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.