Who has been buying Oricon Inc. stock?

6 distinct investors have filed 7 disclosed large-shareholding filings in Oricon Inc. (4800), most recently on 2025-09-26. 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 Oricon Inc. have?

Oricon Inc. has 7 buy-side and 1 sell-side disclosures on record, covering ¥4.4B ($28.6M) in total reported value, spanning 2021-03-22 to 2025-09-26.

Where does StockDrifts get Oricon 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.

Oricon Inc. 4800

Company

オリコン株式会社Oricon Inc.

Investors

Buys

Total Value

¥4.4B ($28.6M)

Avg Return

-10.76%

Last Filing

2025-09-26

Oricon Inc. (4800) has 7 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥4.4B ($28.6M) in reported transaction value. The earliest filing StockDrifts holds for Oricon Inc. is dated 2021-03-22; the most recent is 2025-09-26. 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 -10.76%, 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
2026-07-22	BUY	Market Buy	株式会社UH Partners 2	passive	1.0M	¥1,359	-0.1%	¥1.4B ($8.9M)
2026-07-22	BUY	private	有限会社リトルポンド	strategic	4.7M	¥1,359	-0.1%	¥6.4B ($41.3M)
2026-07-22	SELL	unknown	野村證券株式会社	other	200.6K	¥1,359	+0.1%	¥23M ($146K)
2026-07-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	73.6K	¥1,359	+0.1%	¥635M ($4.1M)
2026-07-22	BUY	Market Buy	光通信株式会社	passive	1.0M	¥1,359	-0.1%	¥1.4B ($9.1M)
2026-07-22	SELL	unknown	小池恒	unknown	0	¥1,359	+0.1%	¥97M ($623K)
2026-07-22	BUY	Market Buy	株式会社エスアイエル	passive	330.9K	¥1,359	-0.1%	¥450M ($2.9M)
2026-07-22	BUY	Market Buy	株式会社UH Partners 3	passive	148.2K	¥1,359	-0.1%	¥201M ($1.3M)
2026-07-21	BUY	unknown	株式会社エスアイエル	unknown	330.9K	¥1,359	-0.1%	¥450M ($2.9M)
2026-07-21	BUY	unknown	株式会社UH Partners 3	unknown	148.2K	¥1,359	-0.1%	¥201M ($1.3M)
2026-07-21	BUY	unknown	株式会社UH Partners 2	unknown	1.0M	¥1,359	-0.1%	¥1.4B ($8.9M)
2026-07-21	BUY	unknown	光通信株式会社	unknown	1.0M	¥1,359	-0.1%	¥1.4B ($9.1M)
2026-07-21	BUY	unknown	株式会社エスアイエル	unknown	330.9K	¥1,359	-0.1%	¥450M ($2.9M)
2026-07-21	BUY	unknown	株式会社UH Partners 3	unknown	148.2K	¥1,359	-0.1%	¥201M ($1.3M)
2026-07-21	BUY	unknown	株式会社UH Partners 2	unknown	1.0M	¥1,359	-0.1%	¥1.4B ($8.9M)
2026-07-21	BUY	unknown	光通信株式会社	unknown	1.0M	¥1,359	-0.1%	¥1.4B ($9.1M)
2026-07-21	BUY	private	メディア株式会社	activist	4.1M	¥1,359	-0.1%	¥5.6B ($36.0M)
2026-07-21	BUY	private	メディア株式会社	activist	4.1M	¥1,359	-0.1%	¥5.6B ($36.0M)
2026-07-07	BUY	Market Buy	株式会社UH Partners 2	passive	1.0M	¥1,369	-0.9%	¥1.4B ($9.0M)
2026-07-07	BUY	unknown	小池恒	activist	71.7K	¥1,369	-0.9%	¥98M ($633K)
2026-07-07	BUY	private	有限会社リトルポンド	strategic	4.7M	¥1,369	-0.9%	¥6.5B ($41.6M)
2026-07-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	541.7K	¥1,369	-0.9%	¥742M ($4.8M)
2026-07-07	BUY	unknown	野村證券株式会社	other	218.3K	¥1,369	-0.9%	¥299M ($1.9M)
2026-07-07	BUY	Market Buy	株式会社エスアイエル	passive	330.9K	¥1,369	-0.9%	¥453M ($2.9M)
2026-07-07	BUY	Market Buy	株式会社UH Partners 3	passive	148.2K	¥1,369	-0.9%	¥203M ($1.3M)
2026-07-07	BUY	Market Buy	光通信株式会社	passive	1.0M	¥1,369	-0.9%	¥1.4B ($9.1M)
2026-06-04	SELL	unknown	小池恒	activist	71.7K	¥1,329	-2.9%	¥42M ($272K)
2026-06-04	BUY	private	有限会社リトルポンド	strategic	4.7M	¥1,329	+2.9%	¥103M ($661K)
2025-09-26	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	330.9K	¥822	-0.4%	¥272M ($1.8M)
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	1.0M	¥822	-0.4%	¥837M ($5.4M)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.0M	¥822	-0.4%	¥851M ($5.5M)
2025-09-26	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	148.2K	¥822	-0.4%	¥122M ($786K)
2023-10-23	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	330.9K	¥730	+12.2%	¥242M ($1.6M)
2023-10-23	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	1.0M	¥730	+12.2%	¥112M ($719K)
2023-10-23	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.0M	¥730	+12.2%	¥756M ($4.9M)
2022-01-18	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	864.3K	¥987	-17.0%	¥853M ($5.5M)
2022-01-18	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	330.9K	¥987	-17.0%	¥327M ($2.1M)
2022-01-18	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.0M	¥987	+17.0%	¥325M ($2.1M)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	864.3K	¥1,026	-20.2%	¥887M ($5.7M)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.4M	¥1,026	-20.2%	¥1.4B ($9.0M)
2021-10-22	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	100.0K	¥966	-15.2%	¥97M ($623K)
2021-10-22	BUY	Market Buy	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	398.6K	¥966	-15.2%	¥379M ($2.4M)
2021-10-07	BUY	Market Buy	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	683.4K	¥964	-15.0%	¥651M ($4.2M)
2021-10-07	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	100.0K	¥964	-15.0%	¥96M ($622K)
2021-09-24	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	100.0K	¥1,001	-18.2%	¥100M ($646K)
2021-09-24	BUY	Market Buy	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	877.6K	¥1,001	-18.2%	¥867M ($5.6M)
2021-08-20	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	100.0K	¥1,032	-20.6%	¥103M ($666K)
2021-08-20	BUY	Market Buy	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	1.1M	¥1,032	-20.6%	¥1.1B ($7.0M)
2021-08-16	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	100.0K	¥1,000	-18.1%	¥100M ($645K)
2021-08-16	BUY	Market Buy	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	1.2M	¥1,000	-18.1%	¥1.2B ($7.9M)

Showing the 50 most recent of 52 filings.

Frequently asked questions

Who has been buying Oricon Inc. stock?: 6 distinct investors have filed 7 disclosed large-shareholding filings in Oricon Inc. (4800), most recently on 2025-09-26. 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 Oricon Inc. have?: Oricon Inc. has 7 buy-side and 1 sell-side disclosures on record, covering ¥4.4B ($28.6M) in total reported value, spanning 2021-03-22 to 2025-09-26.
Where does StockDrifts get Oricon 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 Oricon Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.