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

3 distinct investors have filed 3 disclosed large-shareholding filings in Mullion Co., Ltd. (3494), most recently on 2025-09-19. 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 Mullion Co., Ltd. have?

Mullion Co., Ltd. has 3 buy-side and 9 sell-side disclosures on record, covering ¥541M ($3.5M) in total reported value, spanning 2024-05-30 to 2025-09-19.

Where does StockDrifts get Mullion 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.

Mullion Co., Ltd. 3494

Company

株式会社マリオンMullion Co., Ltd.

Investors

Buys

Total Value

¥541M ($3.5M)

Avg Return

-9.94%

Last Filing

2025-09-19

Mullion Co., Ltd. (3494) has 3 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥541M ($3.5M) in reported transaction value. The earliest filing StockDrifts holds for Mullion Co., Ltd. is dated 2024-05-30; the most recent is 2025-09-19. 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 -9.94%, 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
2025-09-19	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	159.3K	¥488	+26.0%	¥128M ($827K)
2025-09-08	SELL	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	346.1K	¥508	+28.9%	¥46M ($294K)
2025-09-04	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	422.0K	¥504	+28.4%	¥103M ($667K)
2025-09-03	SELL	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	435.7K	¥503	+28.2%	¥41M ($263K)
2025-08-28	BUY	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	516.8K	¥474	-23.8%	¥56M ($363K)
2025-08-28	SELL	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	516.8K	¥474	+23.8%	¥56M ($363K)
2025-08-21	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	627.3K	¥471	-23.4%	¥295M ($1.9M)
2025-06-05	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.	unknown	0	¥354	-2.0%	¥225M ($1.5M)
2024-08-21	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	635.0K	¥431	+16.2%	¥68M ($439K)
2024-08-19	BUY	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	635.0K	¥557	-35.2%	¥88M ($567K)
2024-08-19	SELL	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	635.0K	¥557	+35.2%	¥88M ($567K)
2024-08-19	BUY	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 HONJIN HOLDINGS Association	strategic	635.0K	¥557	-35.2%	¥88M ($567K)
2024-06-06	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	792.8K	¥402	-10.2%	¥319M ($2.1M)
2024-05-30	SELL	unknown	一般社団法人ホンジン・ホールディングス Honjin Holdings	unknown	793.0K	¥348	-3.7%	¥246M ($1.6M)
2024-05-30	BUY	unknown	公益財団法人マリオン財団 Mullion foundation	strategic	707.0K	¥348	+3.7%	¥246M ($1.6M)
2024-05-30	BUY	unknown	公益財団法人マリオン財団代表理事福田敬司 Mullion foundation	strategic	707.0K	¥348	+3.7%	¥246M ($1.6M)
2024-05-30	BUY	unknown	一般社団法人ホンジン・ホールディングス代表理事福田敬司 Honjin Holdings	unknown	793.0K	¥348	+3.7%	¥258M ($1.7M)

Frequently asked questions

Who has been buying Mullion Co., Ltd. stock?: 3 distinct investors have filed 3 disclosed large-shareholding filings in Mullion Co., Ltd. (3494), most recently on 2025-09-19. 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 Mullion Co., Ltd. have?: Mullion Co., Ltd. has 3 buy-side and 9 sell-side disclosures on record, covering ¥541M ($3.5M) in total reported value, spanning 2024-05-30 to 2025-09-19.
Where does StockDrifts get Mullion 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 Mullion Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.