Who has been buying Toyo Construction Co., Ltd. stock?

12 distinct investors have filed 59 disclosed large-shareholding filings in Toyo Construction Co., Ltd. (1890), most recently on 2025-10-06. 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 Toyo Construction Co., Ltd. have?

Toyo Construction Co., Ltd. has 59 buy-side and 12 sell-side disclosures on record, covering ¥148.5B ($957.9M) in total reported value, spanning 2021-06-03 to 2025-10-06.

Where does StockDrifts get Toyo Construction 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.

Toyo Construction Co., Ltd. 1890

Company

東洋建設株式会社Toyo Construction Co., Ltd.

Investors

Buys

Total Value

¥148.5B ($957.9M)

Avg Return

+100.89%

Last Filing

2025-10-06

Toyo Construction Co., Ltd. (1890) has 59 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥148.5B ($957.9M) in reported transaction value. The earliest filing StockDrifts holds for Toyo Construction Co., Ltd. is dated 2021-06-03; the most recent is 2025-10-06. 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 +100.89%, 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
2025-10-06	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.2M	¥1,739	-0.2%	¥328M ($2.1M)
2025-10-06	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥1,739	+0.2%	-
2025-10-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	212.3K	¥1,739	-0.2%	¥5.4B ($35.2M)
2025-10-06	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	535.1K	¥1,739	-0.2%	¥1.4B ($9.3M)
2025-09-29	BUY	Market Buy	ダブリューケイ・ツー・エルエルシー WK 2 LLC	activist	9.2M	¥1,739	+0.2%	¥16.0B ($103.1M)
2025-09-29	BUY	Market Buy	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	activist	2.6M	¥1,739	+0.2%	¥4.6B ($29.5M)
2025-09-29	BUY	Market Buy	ダブリューケイ・スリー・エルエルシー WK 3 LLC	activist	5.9M	¥1,739	+0.2%	¥10.2B ($66.1M)
2025-09-29	SELL	unknown	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	other	0	¥1,739	-0.2%	¥4.6B ($29.4M)
2025-09-29	SELL	unknown	ダブリューケイ・スリー・エルエルシー WK 3 LLC	other	0	¥1,739	-0.2%	¥10.2B ($66.1M)
2025-09-29	SELL	unknown	ダブリューケイ・ツー・エルエルシー WK 2 LLC	other	0	¥1,739	-0.2%	¥16.0B ($103.1M)
2025-09-29	SELL	unknown	ダブリューケイ・ワン・エルエルシー WK 1 LLC	other	0	¥1,739	-0.2%	¥16.0B ($103.2M)
2025-09-29	BUY	Market Buy	ダブリューケイ・ワン・エルエルシー WK 1 LLC	activist	9.2M	¥1,739	+0.2%	¥16.0B ($103.2M)
2025-09-25	BUY	acquisition	大成建設株式会社 TAISEI CORPORATION	activist	77.4M	¥1,735	+0.4%	¥134.2B ($865.9M)
2025-09-19	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.4M	¥1,749	-0.4%	¥2.5B ($16.1M)
2025-09-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.3M	¥1,749	-0.4%	¥5.8B ($37.7M)
2025-09-19	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.4M	¥1,749	-0.4%	¥2.4B ($15.5M)
2025-06-04	BUY	Market Buy	ダブリューケイ・スリー・エルエルシー WK 3 LLC	activist	5.9M	¥1,452	+20.0%	¥8.6B ($55.2M)
2025-06-04	BUY	Market Buy	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	activist	2.6M	¥1,452	+20.0%	¥3.8B ($24.6M)
2025-06-04	BUY	Market Buy	ダブリューケイ・ツー・エルエルシー WK 2 LLC	activist	9.2M	¥1,452	+20.0%	¥13.3B ($86.1M)
2025-06-04	BUY	Market Buy	ダブリューケイ・ワン・エルエルシー WK 1 LLC	activist	9.2M	¥1,452	+20.0%	¥13.4B ($86.2M)
2025-03-28	BUY	Market Buy	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	activist	2.6M	¥1,332	+30.8%	¥3.5B ($22.6M)
2025-03-28	BUY	Market Buy	ダブリューケイ・スリー・エルエルシー WK 3 LLC	activist	5.9M	¥1,332	+30.8%	¥7.8B ($50.6M)
2025-03-28	BUY	Market Buy	ダブリューケイ・ツー・エルエルシー WK 2 LLC	activist	9.2M	¥1,332	+30.8%	¥12.2B ($79.0M)
2025-03-28	BUY	Market Buy	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	activist	2.6M	¥1,332	+30.8%	¥3.5B ($22.6M)
2025-03-28	BUY	Market Buy	ダブリューケイ・スリー・エルエルシー WK 3 LLC	activist	5.9M	¥1,332	+30.8%	¥7.8B ($50.6M)
2025-03-28	BUY	Market Buy	ダブリューケイ・ツー・エルエルシー WK 2 LLC	activist	9.2M	¥1,332	+30.8%	¥12.2B ($79.0M)
2025-03-28	BUY	Market Buy	ダブリューケイ・ワン・エルエルシー WK 1 LLC	activist	9.2M	¥1,332	+30.8%	¥12.3B ($79.1M)
2025-03-28	BUY	Market Buy	ダブリューケイ・ワン・エルエルシー WK 1 LLC	activist	9.2M	¥1,332	+30.8%	¥12.3B ($79.1M)
2023-06-13	BUY	Market Buy	ダブリューケイ・ツー・リミテッド WK 2 Limited	activist	9.2M	¥1,020	+70.8%	¥9.4B ($60.5M)
2023-06-13	BUY	Market Buy	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	activist	2.6M	¥1,020	+70.8%	¥1.3B ($8.2M)
2023-06-13	BUY	Market Buy	ダブリューケイ・スリー・リミテッド WK 3 Limited	activist	5.9M	¥1,020	+70.8%	¥6.0B ($38.8M)
2023-06-13	BUY	Market Buy	ダブリューケイ・ワン・リミテッド WK 1 Limited	activist	9.2M	¥1,020	+70.8%	¥9.4B ($60.5M)
2023-04-06	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.0M	¥960	+81.5%	¥9M ($58K)
2023-04-06	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	35.5K	¥960	-81.5%	¥2.8B ($18.0M)
2023-04-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.6M	¥960	+81.5%	¥1.1B ($7.4M)
2022-09-22	BUY	Market Buy	合同会社Yamauchi-No.10Family Office Yamauchi LLC-No.10Family Office	activist	1.4M	¥868	+100.7%	¥1.2B ($7.7M)
2022-09-22	BUY	Market Buy	ダブリューケイ・スリー・リミテッド WK 3 Limited	activist	5.9M	¥868	+100.7%	¥5.1B ($33.0M)
2022-09-22	BUY	Market Buy	ダブリューケイ・ツー・リミテッド WK 2 Limited	activist	9.2M	¥868	+100.7%	¥8.0B ($51.5M)
2022-09-22	BUY	Market Buy	ダブリューケイ・ワン・リミテッド WK 1 Limited	activist	9.2M	¥868	+100.7%	¥8.0B ($51.5M)
2022-08-03	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.0M	¥875	+99.1%	¥1.0B ($6.7M)
2022-08-03	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.9M	¥875	-99.1%	¥1.0B ($6.8M)
2022-08-03	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	409.4K	¥875	+99.1%	¥8M ($53K)
2022-08-03	BUY	Market Buy	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	unknown	0	¥875	+99.1%	-
2022-06-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	776.4K	¥806	+116.1%	¥8M ($49K)
2022-06-21	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥806	+116.1%	-
2022-06-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	4.1M	¥806	-116.1%	¥783M ($5.1M)
2022-06-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	393.4K	¥806	-116.1%	¥8M ($49K)
2022-06-03	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	764.3K	¥849	+105.2%	¥40M ($258K)
2022-06-03	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥849	+105.2%	-
2022-06-03	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	5.1M	¥849	+105.2%	¥1.2B ($7.6M)

Showing the 50 most recent of 109 filings.

Frequently asked questions

Who has been buying Toyo Construction Co., Ltd. stock?: 12 distinct investors have filed 59 disclosed large-shareholding filings in Toyo Construction Co., Ltd. (1890), most recently on 2025-10-06. 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 Toyo Construction Co., Ltd. have?: Toyo Construction Co., Ltd. has 59 buy-side and 12 sell-side disclosures on record, covering ¥148.5B ($957.9M) in total reported value, spanning 2021-06-03 to 2025-10-06.
Where does StockDrifts get Toyo Construction 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 Toyo Construction Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.