Who has been buying Trusco Nakayama Corporation stock?

20 distinct investors have filed 67 disclosed large-shareholding filings in Trusco Nakayama Corporation (9830), most recently on 2026-05-12. 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 Trusco Nakayama Corporation have?

Trusco Nakayama Corporation has 67 buy-side and 63 sell-side disclosures on record, covering ¥74.2B ($478.7M) in total reported value, spanning 2021-03-31 to 2026-05-12.

Where does StockDrifts get Trusco Nakayama 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.

Trusco Nakayama Corporation 9830

Company

トラスコ中山株式会社Trusco Nakayama Corporation

Investors

Buys

Total Value

¥74.2B ($478.7M)

Avg Return

+7.21%

Last Filing

2026-05-12

Trusco Nakayama Corporation (9830) has 67 disclosed large-shareholding filings and 63 disclosed disposals on record, filed by 20 distinct investors. Together those filings cover ¥74.2B ($478.7M) in reported transaction value. The earliest filing StockDrifts holds for Trusco Nakayama Corporation is dated 2021-03-31; the most recent is 2026-05-12. 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 +7.21%, 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
2026-07-23	BUY	Market Buy	アセットマネジメントOne株式会社	other	813.4K	¥2,357	+1.6%	¥62M ($402K)
2026-07-23	BUY	unknown	みずほ証券株式会社	other	3.4M	¥2,357	+1.6%	¥7.9B ($51.2M)
2026-07-07	SELL	unknown	アセットマネジメントOne株式会社	other	786.5K	¥2,339	-2.6%	¥15M ($100K)
2026-07-07	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,339	-2.6%	¥31M ($199K)
2026-07-02	BUY	Market Buy	小津浩之	passive	198.0K	¥2,285	+5.7%	¥452M ($2.9M)
2026-07-02	BUY	unknown	大同商事株式会社	strategic	3.5M	¥2,285	+5.7%	¥7.9B ($50.9M)
2026-06-29	BUY	Market Buy	小津浩之	passive	198.0K	¥2,263	+5.9%	¥448M ($2.9M)
2026-06-29	BUY	unknown	大同商事株式会社	strategic	3.5M	¥2,263	+5.9%	¥7.8B ($50.4M)
2026-06-29	BUY	unknown	公益財団法人中山視覚福祉財団 Nakayama Welfare Foundation For Visually Impaired Person	other	4.3M	¥2,263	+5.9%	¥9.8B ($63.5M)
2026-05-12	BUY	unknown	アセットマネジメントOne株式会社	other	790.6K	¥2,215	+0.1%	¥1.8B ($11.3M)
2026-05-12	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,215	-0.1%	¥44M ($283K)
2026-04-22	BUY	unknown	アセットマネジメントOne株式会社	other	791.6K	¥2,327	-3.5%	¥1.8B ($11.9M)
2026-04-22	BUY	unknown	みずほ証券株式会社	other	3.4M	¥2,327	-3.5%	¥7.9B ($51.0M)
2026-04-07	SELL	Market Buy	アセットマネジメントOne株式会社	other	790.2K	¥2,363	+8.6%	¥47M ($302K)
2026-04-07	BUY	Market Buy	みずほ証券株式会社	other	3.4M	¥2,363	-8.6%	¥47M ($302K)
2026-03-30	BUY	unknown	公益財団法人中山視覚福祉財団 Nakayama Welfare Foundation For Visually Impaired Person	other	4.3M	¥2,285	+1.2%	¥9.9B ($64.1M)
2026-03-06	SELL	unknown	アセットマネジメントOne株式会社	other	811.2K	¥2,390	+1.9%	¥1.9B ($12.3M)
2026-03-06	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,390	+1.9%	¥7.9B ($51.1M)
2026-01-22	BUY	unknown	アセットマネジメントOne株式会社	other	845.5K	¥2,478	+5.4%	¥2.0B ($12.8M)
2026-01-22	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,478	+5.4%	¥8.0B ($51.4M)
2026-01-09	BUY	Market Buy	アセットマネジメントOne株式会社	other	844.7K	¥2,429	-3.5%	¥2.0B ($12.8M)
2026-01-09	BUY	Market Buy	みずほ証券株式会社	other	3.4M	¥2,429	-3.5%	¥8.0B ($51.4M)
2026-01-06	BUY	unknown	公益財団法人中山視覚福祉財団 Nakayama Welfare Foundation For Visually Impaired Person	other	4.3M	¥2,496	-6.0%	¥10.9B ($70.0M)
2025-09-29	BUY	unknown	公益財団法人中山視覚福祉財団 Nakayama Welfare Foundation For Visually Impaired Person	other	4.3M	¥2,379	-1.4%	¥10.3B ($66.8M)
2025-08-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	793.6K	¥2,273	+3.2%	¥1.8B ($11.6M)
2025-08-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,273	+3.2%	¥7.7B ($49.5M)
2025-07-23	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	793.6K	¥2,154	+8.9%	¥1.7B ($11.0M)
2025-07-23	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,154	+8.9%	¥7.3B ($46.9M)
2025-07-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	792.2K	¥2,052	-14.3%	¥108M ($699K)
2025-07-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,052	+14.3%	¥41M ($262K)
2025-06-27	BUY	unknown	公益財団法人中山視覚福祉財団 Nakayama Welfare Foundation For Visually Impaired Person	other	4.3M	¥2,077	+12.9%	¥9.0B ($58.3M)
2025-05-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥1,993	-17.7%	¥26M ($170K)
2025-05-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	843.2K	¥1,993	-17.7%	¥26M ($170K)
2025-04-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	859.0K	¥1,877	-24.9%	¥12M ($80K)
2025-04-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥1,877	-24.9%	¥211M ($1.4M)
2025-04-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	861.9K	¥1,690	-38.8%	¥56M ($360K)
2025-04-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.5M	¥1,690	+38.8%	¥5.9B ($37.9M)
2025-03-28	BUY	unknown	公益財団法人中山視覚福祉財団 Nakayama Welfare Foundation For Visually Impaired Person	other	4.3M	¥2,022	+16.0%	¥8.8B ($56.7M)
2025-03-24	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	894.7K	¥2,026	+15.8%	¥27M ($173K)
2025-03-24	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.5M	¥2,026	+15.8%	¥187M ($1.2M)
2025-03-06	BUY	unknown	東京海上アセットマネジメント株式会社 Tokio Marine Asset Management Co.,Ltd.	passive	2.4M	¥2,006	+16.9%	¥4.8B ($31.1M)
2025-03-06	SELL	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	50.6K	¥2,006	-16.9%	¥265M ($1.7M)
2025-03-06	SELL	Market Buy	シュローダー・インベストメント・マネージメント・ノースアメリカ・リミテッド Schroder Investment Management North America Limited	passive	785.6K	¥2,006	-16.9%	¥689M ($4.4M)
2025-03-06	BUY	unknown	東京海上アセットマネジメント株式会社 Tokio Marine Asset Management Co.,Ltd.	passive	2.4M	¥2,006	+16.9%	¥4.8B ($31.1M)
2025-03-06	SELL	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	1.7M	¥2,006	-16.9%	¥583M ($3.8M)
2025-03-06	SELL	unknown	東京海上日動火災保険株式会社 Tokio Marine & Nichido Fire Insurance Co., Ltd.	strategic	84.3K	¥2,006	-16.9%	¥7.9B ($51.3M)
2025-03-06	SELL	unknown	東京海上日動火災保険株式会社 Tokio Marine & Nichido Fire Insurance Co., Ltd.	strategic	84.3K	¥2,006	-16.9%	¥7.9B ($51.3M)
2025-02-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	887.8K	¥2,000	+17.3%	¥1.8B ($11.5M)
2025-02-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,000	+17.3%	¥13M ($85K)
2025-01-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	886.9K	¥2,058	-13.9%	¥27M ($175K)

Showing the 50 most recent of 199 filings.

Frequently asked questions

Who has been buying Trusco Nakayama Corporation stock?: 20 distinct investors have filed 67 disclosed large-shareholding filings in Trusco Nakayama Corporation (9830), most recently on 2026-05-12. 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 Trusco Nakayama Corporation have?: Trusco Nakayama Corporation has 67 buy-side and 63 sell-side disclosures on record, covering ¥74.2B ($478.7M) in total reported value, spanning 2021-03-31 to 2026-05-12.
Where does StockDrifts get Trusco Nakayama 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 Trusco Nakayama Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.