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

9 distinct investors have filed 23 disclosed large-shareholding filings in JRC Co.,Ltd. (6224), most recently on 2026-05-01. 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 JRC Co.,Ltd. have?

JRC Co.,Ltd. has 23 buy-side and 15 sell-side disclosures on record, covering ¥6.9B ($44.2M) in total reported value, spanning 2023-08-16 to 2026-05-01.

Where does StockDrifts get JRC Co.,Ltd. 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.

JRC Co.,Ltd. 6224

Company

株式会社JRCJRC Co.,Ltd.

Investors

Buys

Total Value

¥6.9B ($44.2M)

Avg Return

+32.03%

Last Filing

2026-05-01

JRC Co.,Ltd. (6224) has 23 disclosed large-shareholding filings and 15 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥6.9B ($44.2M) in reported transaction value. The earliest filing StockDrifts holds for JRC Co.,Ltd. is dated 2023-08-16; the most recent is 2026-05-01. 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 +32.03%, 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
2026-07-24	BUY	Market Buy	株式会社UH Partners 2	passive	199.2K	¥1,119	+1.3%	¥192M ($1.2M)
2026-07-24	SELL	Market Buy	光通信株式会社	passive	965.4K	¥1,119	-1.3%	¥1M ($9K)
2026-06-29	SELL	unknown	株式会社エムワイエフ	activist	1.9M	¥1,327	+14.0%	¥61M ($393K)
2026-06-29	SELL	unknown	濱口稔	activist	110.1K	¥1,327	+14.0%	¥2M ($11K)
2026-05-27	BUY	Market Buy	株式会社UH Partners 2	passive	27.9K	¥1,317	+2.7%	¥37M ($237K)
2026-05-27	BUY	Market Buy	光通信株式会社	passive	965.4K	¥1,317	+2.7%	¥154M ($992K)
2026-05-01	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	849.4K	¥1,200	+11.3%	¥173M ($1.1M)
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	700.2K	¥1,770	-31.7%	¥72M ($461K)
2025-05-16	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	651.9K	¥1,009	+19.8%	¥658M ($4.2M)
2025-04-25	BUY	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	1.9M	¥956	+26.5%	¥54M ($348K)
2025-04-25	BUY	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	1.9M	¥956	+26.5%	¥54M ($348K)
2025-04-25	BUY	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	1.9M	¥956	+26.5%	¥69M ($443K)
2025-04-25	BUY	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	1.9M	¥956	+26.5%	¥69M ($443K)
2025-04-25	SELL	unknown	濱口稔 Hamaguchi Minoru	activist	110.1K	¥956	-26.5%	¥140M ($902K)
2025-04-25	SELL	unknown	濱口稔 Hamaguchi Minoru	activist	110.1K	¥956	-26.5%	¥140M ($902K)
2025-04-25	SELL	unknown	濱口稔 Hamaguchi Minoru	activist	110.1K	¥956	-26.5%	¥140M ($902K)
2025-04-25	SELL	unknown	濱口稔 Hamaguchi Minoru	activist	110.1K	¥956	-26.5%	¥140M ($902K)
2025-01-27	SELL	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.2M	¥1,073	-12.7%	¥29M ($186K)
2025-01-27	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.7M	¥1,073	+12.7%	¥454M ($2.9M)
2025-01-27	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.7M	¥1,073	+12.7%	¥454M ($2.9M)
2025-01-27	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.7M	¥1,073	+12.7%	¥454M ($2.9M)
2025-01-27	SELL	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	290.0K	¥1,073	-12.7%	¥493M ($3.2M)
2025-01-27	SELL	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	290.0K	¥1,073	-12.7%	¥493M ($3.2M)
2025-01-27	SELL	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	290.0K	¥1,073	-12.7%	¥493M ($3.2M)
2025-01-27	SELL	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	740.0K	¥1,073	-12.7%	¥10M ($62K)
2024-06-26	SELL	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	1.9M	¥1,005	-20.3%	¥126M ($815K)
2024-06-26	BUY	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	1.9M	¥1,005	+20.3%	¥1.9B ($12.2M)
2024-06-26	BUY	unknown	濱口稔 Hamaguchi Minoru	activist	260.1K	¥1,005	+20.3%	¥261M ($1.7M)
2024-06-26	SELL	unknown	濱口稔 Hamaguchi Minoru	activist	260.1K	¥1,005	-20.3%	¥4M ($25K)
2024-05-14	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.2M	¥950	+27.3%	¥2.1B ($13.6M)
2024-05-14	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.2M	¥950	+27.3%	¥220M ($1.4M)
2024-05-14	BUY	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	740.0K	¥950	+27.3%	¥703M ($4.5M)
2024-05-14	BUY	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	740.0K	¥950	+27.3%	¥703M ($4.5M)
2024-03-01	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.2M	¥822	+47.1%	¥191M ($1.2M)
2024-03-01	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.2M	¥822	+47.1%	¥191M ($1.2M)
2024-03-01	BUY	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	740.0K	¥822	+47.1%	¥608M ($3.9M)
2024-03-01	BUY	unknown	濱口佳宏 Hamaguchi Yoshihiro	activist	740.0K	¥822	+47.1%	¥608M ($3.9M)
2024-02-20	SELL	Market Buy	Innovation Partners Alpha Limited	passive	0	¥860	-40.6%	¥109M ($703K)
2024-02-20	SELL	Market Buy	インテグラル・パートナーズ株式会社 Integral Partners Corporation	passive	0	¥860	-40.6%	¥687M ($4.4M)
2023-09-25	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	183.4K	¥705	+71.5%	¥11M ($69K)
2023-09-25	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	400	¥705	-71.5%	¥7M ($42K)
2023-09-07	SELL	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	168.1K	¥765	-58.0%	¥58M ($375K)
2023-09-07	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	925.1K	¥765	+58.0%	¥128M ($826K)
2023-08-22	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	245.2K	¥760	+59.1%	¥186M ($1.2M)
2023-08-22	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	758.4K	¥760	+59.1%	¥576M ($3.7M)
2023-08-17	BUY	unknown	株式会社エムワイエフ MF Co., Ltd.	activist	2.0M	¥859	+40.8%	¥1.7B ($11.0M)
2023-08-17	BUY	unknown	濱口稔 Hamaguchi Minoru	activist	260.1K	¥859	+40.8%	¥223M ($1.4M)
2023-08-16	BUY	unknown	YSホールディングス株式会社 YS Holdings Co., Ltd.	activist	2.0M	¥882	+37.1%	¥1.7B ($11.3M)
2023-08-16	BUY	Market Buy	Innovation Partners Alpha Limited	passive	126.6K	¥882	+37.1%	¥112M ($720K)
2023-08-16	BUY	Market Buy	インテグラル・パートナーズ株式会社 Integral Partners Corporation	passive	798.1K	¥882	+37.1%	¥704M ($4.5M)

Showing the 50 most recent of 51 filings.

Frequently asked questions

Who has been buying JRC Co.,Ltd. stock?: 9 distinct investors have filed 23 disclosed large-shareholding filings in JRC Co.,Ltd. (6224), most recently on 2026-05-01. 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 JRC Co.,Ltd. have?: JRC Co.,Ltd. has 23 buy-side and 15 sell-side disclosures on record, covering ¥6.9B ($44.2M) in total reported value, spanning 2023-08-16 to 2026-05-01.
Where does StockDrifts get JRC Co.,Ltd. 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 JRC Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.