Who has been buying Meiwa Corporation stock?

12 distinct investors have filed 6 disclosed large-shareholding filings in Meiwa Corporation (8103), most recently on 2026-03-30. 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 Meiwa Corporation have?

Meiwa Corporation has 6 buy-side and 10 sell-side disclosures on record, covering ¥7.3B ($47.2M) in total reported value, spanning 2021-09-24 to 2026-03-30.

Where does StockDrifts get Meiwa 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.

Meiwa Corporation 8103

Company

明和産業株式会社Meiwa Corporation

Investors

Buys

Total Value

¥7.3B ($47.2M)

Avg Return

+8.42%

Last Filing

2026-03-30

Meiwa Corporation (8103) has 6 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥7.3B ($47.2M) in reported transaction value. The earliest filing StockDrifts holds for Meiwa Corporation is dated 2021-09-24; the most recent is 2026-03-30. 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 +8.42%, 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
2026-03-30	SELL	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	1.2M	¥786	+1.6%	¥571M ($3.7M)
2026-03-30	SELL	Market Buy	三菱UFJアセットマネジメント株式会社	passive	177.3K	¥786	+1.6%	¥16M ($102K)
2026-03-30	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	421.7K	¥786	-1.6%	¥331M ($2.1M)
2026-03-16	BUY	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	1.9M	¥815	-4.5%	¥1.5B ($9.4M)
2026-03-16	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	196.7K	¥815	-4.5%	¥153M ($987K)
2026-03-16	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	423.6K	¥815	-4.5%	¥330M ($2.1M)
2026-03-09	SELL	unknown	三菱ケミカル株式会社 Mitsubishi Chemical Corporation	other	1.8M	¥822	+5.3%	¥1.0B ($6.5M)
2026-03-09	BUY	unknown	AGCエスアイテック株式会社	strategic	44.0K	¥822	+5.4%	¥34M ($221K)
2026-03-09	SELL	unknown	AGC株式会社	strategic	1.7M	¥822	+5.4%	¥1.3B ($8.4M)
2026-03-06	SELL	unknown	三菱商事株式会社 Mitsubishi Corporation	strategic	5.7M	¥889	+12.5%	¥3.4B ($22.0M)
2024-03-18	SELL	unknown	三菱商事株式会社 Mitsubishi Corporation	strategic	9.9M	¥668	-16.5%	¥511M ($3.3M)
2024-03-12	BUY	unknown	AGC株式会社 AGC Inc.	strategic	3.0M	¥641	+21.4%	¥1.9B ($12.1M)
2024-03-12	BUY	unknown	三菱ケミカル株式会社 Mitsubishi Chemical Corporation	other	3.2M	¥641	+21.4%	¥2.0B ($12.9M)
2024-03-12	BUY	unknown	関西熱化学株式会社 Kansai Thermal Chemical Co., Ltd.	corporate	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	ダイヤリックス株式会社 Dialix Co., Ltd.	corporate	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	三菱ケミカルエンジニアリング株式会社 Mitsubishi Chemical Engineering Corporation	corporate	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	三菱ケミカル物流株式会社 Mitsubishi Chemical Logistics Co., Ltd.	corporate	88.0K	¥641	+21.4%	¥56M ($364K)
2024-03-12	BUY	unknown	AGCエスアイテック株式会社 AGC SI Tech Co., Ltd.	strategic	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	関西熱化学株式会社 Kansai Thermal Chemical Co., Ltd.	corporate	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	ダイヤリックス株式会社 Dialix Co., Ltd.	corporate	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	三菱ケミカルエンジニアリング株式会社 Mitsubishi Chemical Engineering Corporation	corporate	44.0K	¥641	+21.4%	¥28M ($182K)
2024-03-12	BUY	unknown	三菱ケミカル物流株式会社 Mitsubishi Chemical Logistics Co., Ltd.	corporate	88.0K	¥641	+21.4%	¥56M ($364K)
2024-03-12	BUY	unknown	三菱ケミカル株式会社 Mitsubishi Chemical Corporation	other	3.2M	¥641	+21.4%	¥2.0B ($12.9M)
2024-03-11	SELL	unknown	三菱商事株式会社 Mitsubishi Corporation	strategic	10.6M	¥641	-21.4%	¥2.0B ($12.9M)
2021-10-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	797.7K	¥834	+6.7%	¥1.1B ($7.3M)
2021-10-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.2M	¥765	-1.7%	¥722M ($4.7M)
2021-09-24	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	3.1M	¥1,168	+33.4%	¥961M ($6.2M)

Frequently asked questions

Who has been buying Meiwa Corporation stock?: 12 distinct investors have filed 6 disclosed large-shareholding filings in Meiwa Corporation (8103), most recently on 2026-03-30. 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 Meiwa Corporation have?: Meiwa Corporation has 6 buy-side and 10 sell-side disclosures on record, covering ¥7.3B ($47.2M) in total reported value, spanning 2021-09-24 to 2026-03-30.
Where does StockDrifts get Meiwa 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 Meiwa Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.