Who has been buying Shobunsha Holdings, Inc. stock?

11 distinct investors have filed 10 disclosed large-shareholding filings in Shobunsha Holdings, Inc. (9475), most recently on 2026-04-20. 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 Shobunsha Holdings, Inc. have?

Shobunsha Holdings, Inc. has 10 buy-side and 7 sell-side disclosures on record, covering ¥3.6B ($23.2M) in total reported value, spanning 2021-03-19 to 2026-04-20.

Where does StockDrifts get Shobunsha 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.

Shobunsha Holdings, Inc. 9475

Company

株式会社昭文社ホールディングスShobunsha Holdings, Inc.

Investors

Buys

Total Value

¥3.6B ($23.2M)

Avg Return

+28.76%

Last Filing

2026-04-20

Shobunsha Holdings, Inc. (9475) has 10 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥3.6B ($23.2M) in reported transaction value. The earliest filing StockDrifts holds for Shobunsha Holdings, Inc. is dated 2021-03-19; the most recent is 2026-04-20. 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 +28.76%, 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
2026-04-20	BUY	Market Buy	株式会社UH6	passive	21.8K	¥502	+1.8%	¥11M ($71K)
2026-04-20	BUY	Market Buy	光通信株式会社	passive	921.5K	¥502	+1.8%	¥17M ($112K)
2026-04-20	SELL	Market Buy	株式会社UH5	unknown	0	¥502	-1.8%	¥11M ($71K)
2026-04-20	BUY	Market Buy	株式会社UH Partners 2	passive	150.2K	¥502	+1.8%	¥75M ($486K)
2025-10-20	BUY	Market Buy	株式会社UH5	passive	21.8K	¥419	+19.8%	¥9M ($59K)
2025-10-20	BUY	Market Buy	光通信株式会社	passive	888.0K	¥419	+19.8%	¥372M ($2.4M)
2025-10-20	BUY	Market Buy	株式会社UH5 UH5 Co., Ltd.	passive	21.8K	¥419	+19.8%	¥9M ($59K)
2025-10-20	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	888.0K	¥419	+19.8%	¥372M ($2.4M)
2024-09-02	SELL	Market Buy	株式会社MTーApp(消滅会社) MT-App Co., Ltd. (extinct company)	other	0	¥374	-34.2%	¥85M ($548K)
2024-09-02	SELL	Market Buy	SPSHD株式会社(消滅会社) SPSHD Co., Ltd. (disappeared company)	other	0	¥374	-34.2%	¥626M ($4.0M)
2024-09-02	SELL	Market Buy	株式会社MGSHD(消滅会社) MGSHD Co., Ltd. (extinct company)	other	0	¥374	-34.2%	¥626M ($4.0M)
2024-09-02	BUY	Market Buy	株式会社エムティーアイ MTI Ltd.	strategic	5.4M	¥374	+34.2%	¥1.4B ($8.9M)
2024-08-09	BUY	unknown	株式会社MSE MSE Co., Ltd.	activist	3.4M	¥350	+43.4%	¥256M ($1.7M)
2024-08-09	SELL	unknown	黒田茂夫 Shigeo Kuroda	activist	1.9M	¥350	-43.4%	¥255M ($1.6M)
2023-11-17	BUY	unknown	株式会社MSE MSE Co., Ltd.	activist	2.7M	¥370	+35.7%	¥998M ($6.4M)
2023-11-17	BUY	unknown	黒田茂夫 Shigeo Kuroda	activist	2.6M	¥370	+35.7%	¥961M ($6.2M)
2023-11-17	SELL	unknown	黒田喜容子 Kiyoko Kuroda	activist	0	¥370	-35.7%	¥998M ($6.4M)
2023-11-17	BUY	unknown	黒田喜容子 Kiyoko Kuroda	activist	0	¥370	+35.7%	¥998M ($6.4M)
2023-09-12	BUY	unknown	黒田喜容子 Kiyoko Kuroda	activist	2.7M	¥313	+60.4%	¥845M ($5.4M)
2023-09-08	BUY	Market Buy	黒田茂夫 Shigeo Kuroda	activist	2.6M	¥307	+63.5%	¥276M ($1.8M)
2021-07-19	SELL	negotiated	株式会社MT-App MT-App Co., Ltd.	strategic	227.2K	¥483	-3.9%	¥1.8B ($11.8M)
2021-07-19	BUY	negotiated	SPSHD株式会社 SPSHD Co., Ltd.	strategic	1.7M	¥483	+3.9%	¥808M ($5.2M)
2021-07-19	BUY	negotiated	株式会社MGSHD MGSHD Co., Ltd.	strategic	1.7M	¥483	+3.9%	¥809M ($5.2M)
2021-07-19	BUY	negotiated	株式会社エムティーアイ MTI Ltd.	strategic	1.7M	¥483	+3.9%	¥816M ($5.3M)
2021-03-19	BUY	negotiated	株式会社MT-App MT-App Co., Ltd.	strategic	39.6K	¥477.983	+5.0%	¥19M ($122K)
2021-03-19	BUY	negotiated	SPSHD株式会社 SPSHD Co., Ltd.	strategic	1.7M	¥477.983	+5.0%	¥69M ($443K)
2021-03-19	BUY	negotiated	株式会社MGSHD MGSHD Co., Ltd.	strategic	1.7M	¥477.983	+5.0%	¥800M ($5.2M)
2021-03-19	BUY	negotiated	株式会社エムティーアイ MTI Ltd.	strategic	1.7M	¥477.983	+5.0%	¥807M ($5.2M)

Frequently asked questions

Who has been buying Shobunsha Holdings, Inc. stock?: 11 distinct investors have filed 10 disclosed large-shareholding filings in Shobunsha Holdings, Inc. (9475), most recently on 2026-04-20. 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 Shobunsha Holdings, Inc. have?: Shobunsha Holdings, Inc. has 10 buy-side and 7 sell-side disclosures on record, covering ¥3.6B ($23.2M) in total reported value, spanning 2021-03-19 to 2026-04-20.
Where does StockDrifts get Shobunsha 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 Shobunsha Holdings, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.