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

8 distinct investors have filed 11 disclosed large-shareholding filings in Nansin Co., Ltd. (7399), most recently on 2025-09-29. 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 Nansin Co., Ltd. have?

Nansin Co., Ltd. has 11 buy-side and 3 sell-side disclosures on record, covering ¥319M ($2.1M) in total reported value, spanning 2021-03-23 to 2025-09-29.

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.

Nansin Co., Ltd. 7399

Company

株式会社ナンシンNansin Co., Ltd.

Investors

Buys

Total Value

¥319M ($2.1M)

Avg Return

+10.57%

Last Filing

2025-09-29

Nansin Co., Ltd. (7399) has 11 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥319M ($2.1M) in reported transaction value. The earliest filing StockDrifts holds for Nansin Co., Ltd. is dated 2021-03-23; the most recent is 2025-09-29. Across these filings the average return since disclosure is +10.57%, 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
2025-09-29	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	163.1K	¥595	-	-
2025-09-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	500.4K	¥595	-	-
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	506.6K	¥595	-	-
2025-09-29	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	36.7K	¥595	+3.9%	¥2M ($12K)
2025-06-27	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	506.6K	¥530	-	-
2025-06-27	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	500.4K	¥530	+16.6%	¥24M ($153K)
2025-06-27	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	34.1K	¥530	-	¥18M ($117K)
2025-06-27	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	163.1K	¥530	-	-
2024-10-09	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	455.3K	¥525	+17.7%	¥45M ($287K)
2024-10-09	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	163.1K	¥525	-	-
2024-10-09	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	506.6K	¥525	-	-
2023-03-03	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	506.6K	¥501	-	-
2023-03-03	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	370.5K	¥501	+23.4%	¥43M ($279K)
2023-03-03	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	163.1K	¥501	-	-
2022-11-25	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	506.6K	¥480	-	-
2022-11-25	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	284.5K	¥480	+28.8%	¥75M ($487K)
2022-11-25	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	163.1K	¥480	-	-
2022-01-18	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	163.1K	¥539	-	¥88M ($567K)
2022-01-18	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	506.6K	¥539	-14.7%	¥88M ($568K)
2022-01-18	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	127.0K	¥539	+14.7%	¥8M ($54K)
2021-12-27	BUY	unknown	齋藤佳子 Yoshiko Saito	other	80.0K	¥533	-	-
2021-12-27	BUY	Market Buy	田中園枝 Tanaka Sonoe	other	401.5K	¥533	+15.9%	¥45M ($292K)
2021-12-27	BUY	unknown	齋藤邦彦 Kunihiko Saito	other	1.0M	¥533	+15.9%	¥37M ($241K)
2021-12-27	BUY	Market Buy	齋藤邦彦 Kunihiko Saito	other	1.0M	¥533	+15.9%	¥37M ($241K)
2021-12-27	BUY	Market Buy	齋藤佳子 Yoshiko Saito	other	80.0K	¥533	-	-
2021-12-27	SELL	Market Buy	齋藤光代(令和3年3月5日逝去。相続人代表齋藤邦彦) Mitsuyo Saito (passed away on March 5, 2021. Kunihiko Saito, representative heir)	other	0	¥533	-15.9%	¥72M ($464K)
2021-12-27	BUY	unknown	田中園枝 Tanaka Sonoe	other	401.5K	¥533	+15.9%	¥45M ($292K)
2021-12-27	SELL	unknown	齋藤光代(令和3年3月5日逝去。相続人代表齋藤邦彦) Mitsuyo Saito (passed away on March 5, 2021. Kunihiko Saito, representative heir)	other	0	¥533	-15.9%	¥72M ($464K)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	111.7K	¥564	+9.6%	¥32M ($205K)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	669.7K	¥564	-	-
2021-03-23	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	669.7K	¥511.985	-	-
2021-03-23	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	55.4K	¥511.985	-	-

Frequently asked questions

Who has been buying Nansin Co., Ltd. stock?: 8 distinct investors have filed 11 disclosed large-shareholding filings in Nansin Co., Ltd. (7399), most recently on 2025-09-29. 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 Nansin Co., Ltd. have?: Nansin Co., Ltd. has 11 buy-side and 3 sell-side disclosures on record, covering ¥319M ($2.1M) in total reported value, spanning 2021-03-23 to 2025-09-29.
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.