Who has been buying TOYO Corporation stock?

7 distinct investors have filed 12 disclosed large-shareholding filings in TOYO Corporation (8151), most recently on 2025-12-19. 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 TOYO Corporation have?

TOYO Corporation has 12 buy-side and 4 sell-side disclosures on record, covering ¥6.5B ($41.6M) in total reported value, spanning 2021-04-07 to 2025-12-19.

Where does StockDrifts get TOYO 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.

TOYO Corporation 8151

Company

株式会社東陽テクニカTOYO Corporation

Investors

Buys

Total Value

¥6.5B ($41.6M)

Avg Return

+53.45%

Last Filing

2025-12-19

TOYO Corporation (8151) has 12 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥6.5B ($41.6M) in reported transaction value. The earliest filing StockDrifts holds for TOYO Corporation is dated 2021-04-07; the most recent is 2025-12-19. 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 +53.45%, 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
2026-08-14	SELL	Market Buy	シンプレクス・アセット・マネジメント株式会社 Simplex Asset Management Co., Ltd.	passive	2.3M	¥2,117	+0.0%	¥685M ($4.4M)
2025-12-19	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	1.3M	¥1,727	+6.6%	¥2.3B ($14.8M)
2024-07-22	SELL	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	0	¥1,582	-16.4%	¥384M ($2.5M)
2024-07-22	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	1.1M	¥1,582	+16.4%	¥1.7B ($10.7M)
2023-02-16	BUY	Market Buy	シンプレクス・アセット・マネジメント株式会社 Simplex Asset Management Co., Ltd.	passive	2.6M	¥1,297	+41.9%	¥352M ($2.3M)
2022-12-22	BUY	Market Buy	シンプレクス・アセット・マネジメント株式会社 Simplex Asset Management Co., Ltd.	passive	2.3M	¥1,334	+38.0%	¥393M ($2.5M)
2022-01-07	SELL	unknown	バーガンディ・アセット・マネジメント・リミテッド(Burgundy Asset Management Ltd.) Burgundy Asset Management Ltd.	other	1.1M	¥1,112	-65.6%	¥310M ($2.0M)
2021-10-22	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	243.3K	¥1,093	+68.4%	¥266M ($1.7M)
2021-10-22	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	1.1M	¥1,093	+68.4%	¥1.2B ($7.8M)
2021-10-22	BUY	Market Buy	シンプレクス・アセット・マネジメント株式会社 Simplex Asset Management Co., Ltd.	passive	2.0M	¥1,093	+68.4%	¥405M ($2.6M)
2021-08-20	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	452.2K	¥1,098	+67.7%	¥490M ($3.2M)
2021-08-20	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	unknown	0	¥1,098	-67.7%	¥11M ($68K)
2021-07-26	BUY	Market Buy	シンプレクス・アセット・マネジメント株式会社 Simplex Asset Management Co., Ltd.	passive	1.7M	¥1,189	+54.8%	¥440M ($2.8M)
2021-04-22	SELL	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	475.2K	¥1,060	-73.7%	¥299M ($1.9M)
2021-04-22	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	959.1K	¥1,060	+73.7%	¥75M ($482K)
2021-04-22	BUY	Market Buy	シンプレクス・アセット・マネジメント株式会社 Simplex Asset Management Co., Ltd.	passive	1.3M	¥1,060	+73.7%	¥1.4B ($8.9M)
2021-04-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	15.0K	¥1,110	+65.9%	¥1.5B ($9.8M)
2021-04-07	BUY	unknown	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	1.4M	¥1,110	+65.9%	¥362M ($2.3M)
2021-04-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	243.3K	¥1,110	+65.9%	¥270M ($1.7M)

Frequently asked questions

Who has been buying TOYO Corporation stock?: 7 distinct investors have filed 12 disclosed large-shareholding filings in TOYO Corporation (8151), most recently on 2025-12-19. 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 TOYO Corporation have?: TOYO Corporation has 12 buy-side and 4 sell-side disclosures on record, covering ¥6.5B ($41.6M) in total reported value, spanning 2021-04-07 to 2025-12-19.
Where does StockDrifts get TOYO 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 TOYO Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.