Who has been buying DMS Inc. stock?

6 distinct investors have filed 5 disclosed large-shareholding filings in DMS Inc. (9782), most recently on 2025-09-17. 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 DMS Inc. have?

DMS Inc. has 5 buy-side and 10 sell-side disclosures on record, covering ¥876M ($5.7M) in total reported value, spanning 2021-04-07 to 2025-09-17.

Where does StockDrifts get DMS 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.

DMS Inc. 9782

Company

株式会社ディーエムエスDMS Inc.

Investors

Buys

Total Value

¥876M ($5.7M)

Avg Return

+113.37%

Last Filing

2025-09-17

DMS Inc. (9782) has 5 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥876M ($5.7M) in reported transaction value. The earliest filing StockDrifts holds for DMS Inc. is dated 2021-04-07; the most recent is 2025-09-17. 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 +113.37%, 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
2025-09-17	SELL	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	0	¥3,165	-1.4%	¥120M ($771K)
2025-09-17	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	354.3K	¥3,165	-1.4%	¥129M ($830K)
2025-08-29	SELL	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	37.7K	¥3,285	+2.3%	¥246M ($1.6M)
2025-08-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	395.1K	¥3,285	-2.3%	¥1.3B ($8.4M)
2025-08-14	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	395.1K	¥3,265	-1.7%	¥1.3B ($8.3M)
2025-08-14	SELL	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	112.5K	¥3,265	+1.7%	¥244M ($1.6M)
2025-07-29	SELL	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	187.3K	¥3,010	-6.6%	¥227M ($1.5M)
2025-07-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	395.1K	¥3,010	+6.6%	¥1.2B ($7.7M)
2025-02-13	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	262.7K	¥1,888	+70.0%	¥496M ($3.2M)
2025-02-13	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	395.1K	¥1,888	+70.0%	¥40M ($257K)
2024-10-21	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	374.3K	¥1,547	+107.5%	¥579M ($3.7M)
2023-12-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	309.0K	¥1,599	-100.8%	¥160M ($1.0M)
2023-11-08	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	409.3K	¥1,359	-136.2%	¥135M ($872K)
2023-08-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	509.3K	¥1,442	-122.6%	¥145M ($932K)
2021-04-22	SELL	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	174.2K	¥1,380	-132.6%	¥14M ($91K)
2021-04-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	110.0K	¥1,380	+132.6%	¥152M ($979K)
2021-04-22	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	200	¥1,380	-132.6%	¥277M ($1.8M)
2021-04-07	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	184.3K	¥1,397	+129.8%	¥257M ($1.7M)
2021-04-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	110.0K	¥1,397	+129.8%	¥154M ($991K)
2021-04-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	200.2K	¥1,397	+129.8%	¥280M ($1.8M)

Frequently asked questions

Who has been buying DMS Inc. stock?: 6 distinct investors have filed 5 disclosed large-shareholding filings in DMS Inc. (9782), most recently on 2025-09-17. 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 DMS Inc. have?: DMS Inc. has 5 buy-side and 10 sell-side disclosures on record, covering ¥876M ($5.7M) in total reported value, spanning 2021-04-07 to 2025-09-17.
Where does StockDrifts get DMS 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 DMS Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.