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.

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. 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
2026-09-25	BUY	Market Buy	中山沙織	strategic	371.4K	¥2,448	+0.0%	¥905M ($5.8M)
2026-09-25	BUY	unknown	株式会社NFホールディングス	strategic	2.0M	¥2,448	-	-
2026-09-25	BUY	unknown	株式会社NSホールディングス	strategic	7.9M	¥2,448	-	-
2026-09-25	BUY	unknown	株式会社NRホールディングス	strategic	2.4M	¥2,448	-	-
2026-09-24	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	¥2,396	-	-
2026-07-23	BUY	unknown	みずほ証券株式会社	other	3.4M	¥2,357	-	-
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	+3.9%	¥62M ($402K)
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	-4.7%	¥15M ($100K)
2026-07-07	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,339	-4.7%	¥31M ($199K)
2026-07-02	BUY	unknown	大同商事株式会社	strategic	3.5M	¥2,285	-	-
2026-07-02	BUY	Market Buy	小津浩之	passive	198.0K	¥2,285	+7.1%	¥452M ($2.9M)
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	-	-
2026-06-29	BUY	unknown	大同商事株式会社	strategic	3.5M	¥2,263	-	-
2026-06-29	BUY	Market Buy	小津浩之	passive	198.0K	¥2,263	+8.2%	¥448M ($2.9M)
2026-05-12	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,215	-10.5%	¥44M ($283K)
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	-	-
2026-04-22	BUY	unknown	みずほ証券株式会社	other	3.4M	¥2,327	-	-
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	-	-
2026-04-07	BUY	Market Buy	みずほ証券株式会社	other	3.4M	¥2,363	+3.6%	¥47M ($302K)
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	-3.6%	¥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	-	-
2026-03-06	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,390	-2.4%	¥32M ($204K)
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	-2.4%	¥79M ($509K)
2026-01-22	SELL	unknown	みずほ証券株式会社	other	3.4M	¥2,478	+1.2%	¥16M ($106K)
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	-	-
2026-01-09	BUY	Market Buy	みずほ証券株式会社	other	3.4M	¥2,429	+0.8%	¥64M ($414K)
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	+0.8%	¥128M ($828K)
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	-	-
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	-	-
2025-08-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,273	-	-
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	-	-
2025-07-23	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,154	-	-
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	-	-
2025-07-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥2,052	+19.3%	¥41M ($262K)
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	-19.3%	¥108M ($699K)
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	-	-
2025-05-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥1,993	-22.8%	¥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	-22.8%	¥26M ($170K)
2025-04-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.4M	¥1,877	-30.4%	¥211M ($1.4M)
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	-30.4%	¥12M ($80K)
2025-04-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.5M	¥1,690	-	-
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	-44.9%	¥56M ($360K)
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	-	-
2025-03-24	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.5M	¥2,026	+20.8%	¥187M ($1.2M)
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	+20.8%	¥27M ($173K)
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	-22.0%	¥7.9B ($51.3M)
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	-22.0%	¥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	-22.0%	¥7.9B ($51.3M)
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	+22.0%	¥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・ノースアメリカ・リミテッド Schroder Investment Management North America Limited	passive	785.6K	¥2,006	-22.0%	¥689M ($4.4M)

Showing the 50 most recent of 200 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.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.