Who has been buying Rorze Corporation stock?

7 distinct investors have filed 12 disclosed large-shareholding filings in Rorze Corporation (6323), most recently on 2025-05-08. 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 Rorze Corporation have?

Rorze Corporation has 12 buy-side and 7 sell-side disclosures on record, covering ¥36.2B ($233.4M) in total reported value, spanning 2022-02-04 to 2025-05-08.

Where does StockDrifts get Rorze Corporation 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.

Rorze Corporation 6323

Company

ローツェ株式会社Rorze Corporation

Investors

Buys

Total Value

¥36.2B ($233.4M)

Avg Return

+129.51%

Last Filing

2025-05-08

Rorze Corporation (6323) has 12 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥36.2B ($233.4M) in reported transaction value. The earliest filing StockDrifts holds for Rorze Corporation is dated 2022-02-04; the most recent is 2025-05-08. 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 +129.51%, 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
2025-05-08	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥1,548	+134.1%	¥95.9B ($618.6M)
2025-05-08	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	8.4M	¥1,548	+134.1%	¥12.9B ($83.5M)
2025-05-08	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	8.4M	¥1,548	+134.1%	¥12.9B ($83.5M)
2025-05-08	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥1,548	+134.1%	¥95.9B ($618.6M)
2024-12-05	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	3.2M	¥1,604	-125.9%	¥141M ($913K)
2024-12-05	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	3.9M	¥1,604	-125.9%	¥3.4B ($21.9M)
2024-11-07	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	3.2M	¥2,237	+62.0%	¥7.2B ($46.8M)
2024-11-07	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	6.0M	¥2,237	+62.0%	¥13.5B ($87.2M)
2024-10-30	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	8.4M	¥2,337	+55.1%	¥19.5B ($126.0M)
2024-10-30	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	8.4M	¥2,337	+55.1%	¥19.5B ($126.0M)
2024-10-30	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥2,337	+55.1%	¥144.8B ($933.9M)
2024-10-30	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥2,337	+55.1%	¥144.8B ($933.9M)
2024-10-30	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	70.3M	¥2,337	+55.1%	¥164.3B ($1.1B)
2024-10-29	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	8.4M	¥2,171	+66.9%	¥9.2B ($59.1M)
2024-10-29	BUY	block_purchase	崎谷文雄 Fumio Sakiya	activist	70.3M	¥2,171	+66.9%	¥9.1B ($58.8M)
2024-10-29	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥2,171	+66.9%	¥134.5B ($867.6M)
2024-10-25	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	4.1M	¥1,985	+82.6%	¥4.3B ($27.8M)
2024-10-25	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥1,985	+82.6%	¥123.0B ($793.3M)
2024-10-25	BUY	Market Buy	崎谷文雄 Fumio Sakiya	activist	66.1M	¥1,985	+82.6%	¥4.3B ($27.8M)
2024-10-23	BUY	unknown	バルンリバー合同会社 Barun River LLC	activist	2.0M	¥2,059	+76.0%	¥4.1B ($26.3M)
2024-10-23	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	61.9M	¥2,059	+76.0%	¥127.5B ($822.8M)
2024-10-23	BUY	Market Buy	崎谷文雄 Fumio Sakiya	activist	63.9M	¥2,059	+76.0%	¥4.1B ($26.5M)
2023-12-21	SELL	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	8.5K	¥1,466	-147.2%	¥23M ($150K)
2023-12-21	BUY	Market Buy	シュローダー・インベストメント・マネージメント・ノースアメリカ・リミテッド Schroder Investment Management North America Limited	passive	148.3K	¥1,466	+147.2%	¥67M ($434K)
2023-12-21	BUY	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	731.0K	¥1,466	+147.2%	¥1.1B ($6.8M)
2023-02-06	BUY	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	24.0K	¥1,025	+253.6%	¥25M ($159K)
2023-02-06	BUY	Market Buy	シュローダー・インベストメント・マネージメント・ノースアメリカ・リミテッド Schroder Investment Management North America Limited	passive	101.9K	¥1,025	+253.6%	¥104M ($674K)
2023-02-06	BUY	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	950.3K	¥1,025	+253.6%	¥974M ($6.3M)
2022-11-25	SELL	unknown	崎谷文雄 Fumio Sakiya	activist	6.2M	¥870	-316.6%	¥71M ($455K)
2022-11-25	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	6.2M	¥870	+316.6%	¥71M ($455K)
2022-11-25	BUY	unknown	崎谷文雄 Fumio Sakiya	activist	6.2M	¥870	+316.6%	¥71M ($455K)
2022-02-04	SELL	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	607.3K	¥1,057	-242.9%	¥89M ($577K)
2022-02-04	SELL	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	27.5K	¥1,057	-242.9%	¥15M ($96K)
2022-02-04	SELL	Market Buy	シュローダー・インベストメント・マネージメント・ノースアメリカ・リミテッド Schroder Investment Management North America Limited	passive	97.2K	¥1,057	-242.9%	¥86M ($553K)

Frequently asked questions

Who has been buying Rorze Corporation stock?: 7 distinct investors have filed 12 disclosed large-shareholding filings in Rorze Corporation (6323), most recently on 2025-05-08. 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 Rorze Corporation have?: Rorze Corporation has 12 buy-side and 7 sell-side disclosures on record, covering ¥36.2B ($233.4M) in total reported value, spanning 2022-02-04 to 2025-05-08.
Where does StockDrifts get Rorze Corporation 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 Rorze Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.