Who has been buying BSN Media Holdings, Inc. stock?

5 distinct investors have filed 6 disclosed large-shareholding filings in BSN Media Holdings, Inc. (9408), 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 BSN Media Holdings, Inc. have?

BSN Media Holdings, Inc. has 6 buy-side and 1 sell-side disclosures on record, covering ¥621M ($4.0M) in total reported value, spanning 2021-10-05 to 2025-09-29.

Where does StockDrifts get BSN Media Holdings, Inc. 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.

BSN Media Holdings, Inc. 9408

Company

株式会社新潟放送BSN Media Holdings, Inc.

Investors

Buys

Total Value

¥621M ($4.0M)

Avg Return

+84.36%

Last Filing

2025-09-29

BSN Media Holdings, Inc. (9408) has 6 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥621M ($4.0M) in reported transaction value. The earliest filing StockDrifts holds for BSN Media Holdings, Inc. is dated 2021-10-05; the most recent is 2025-09-29. 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 +84.36%, 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	125.4K	¥2,270	+22.5%	¥285M ($1.8M)
2025-09-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	202.0K	¥2,270	+22.5%	¥75M ($483K)
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	449.2K	¥2,270	+22.5%	¥1.0B ($6.6M)
2024-10-24	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	125.4K	¥1,685	+65.0%	¥211M ($1.4M)
2024-10-24	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	169.2K	¥1,685	+65.0%	¥111M ($717K)
2024-10-24	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	449.2K	¥1,685	+65.0%	¥757M ($4.9M)
2023-12-25	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	125.4K	¥1,544	+80.1%	¥194M ($1.2M)
2023-12-25	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	103.4K	¥1,544	+80.1%	¥93M ($598K)
2023-12-25	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	449.2K	¥1,544	+80.1%	¥694M ($4.5M)
2022-01-18	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	125.4K	¥1,300	+113.9%	¥163M ($1.1M)
2022-01-18	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	43.3K	¥1,300	+113.9%	¥6M ($40K)
2022-01-18	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	449.2K	¥1,300	-113.9%	¥163M ($1.1M)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	38.1K	¥1,283	+116.8%	¥49M ($315K)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	574.6K	¥1,283	+116.8%	¥737M ($4.8M)
2021-10-05	BUY	negotiated	第四北越リース株式会社 Daishi Hokuetsu Lease Co., Ltd.	strategic	256.5K	¥1,310	+112.3%	¥336M ($2.2M)
2021-10-05	BUY	negotiated	株式会社第四北越銀行 Daishi Hokuetsu Bank,Ltd.	strategic	299.6K	¥1,310	+112.3%	¥392M ($2.5M)

Frequently asked questions

Who has been buying BSN Media Holdings, Inc. stock?: 5 distinct investors have filed 6 disclosed large-shareholding filings in BSN Media Holdings, Inc. (9408), 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 BSN Media Holdings, Inc. have?: BSN Media Holdings, Inc. has 6 buy-side and 1 sell-side disclosures on record, covering ¥621M ($4.0M) in total reported value, spanning 2021-10-05 to 2025-09-29.
Where does StockDrifts get BSN Media Holdings, Inc. 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 BSN Media Holdings, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.