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

5 distinct investors have filed 15 disclosed large-shareholding filings in Ricksoft Co., Ltd. (4429), most recently on 2025-11-17. 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 Ricksoft Co., Ltd. have?

Ricksoft Co., Ltd. has 15 buy-side and 8 sell-side disclosures on record, covering ¥883M ($5.7M) in total reported value, spanning 2021-03-17 to 2025-11-17.

Where does StockDrifts get Ricksoft 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.

Ricksoft Co., Ltd. 4429

Company

リックソフト株式会社Ricksoft Co., Ltd.

Investors

Buys

Total Value

¥883M ($5.7M)

Avg Return

-27.67%

Last Filing

2025-11-17

Ricksoft Co., Ltd. (4429) has 15 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥883M ($5.7M) in reported transaction value. The earliest filing StockDrifts holds for Ricksoft Co., Ltd. is dated 2021-03-17; the most recent is 2025-11-17. 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 -27.67%, 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
2025-11-17	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	361.2K	¥940	-6.5%	¥340M ($2.2M)
2025-11-17	BUY	Market Buy	株式会社UH5 UH5 Co., Ltd.	passive	23.1K	¥940	-6.5%	¥8M ($50K)
2025-11-17	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	83.2K	¥940	-6.5%	¥36M ($229K)
2025-09-26	BUY	Market Buy	株式会社UH5 UH5 Co., Ltd.	passive	14.9K	¥1,077	-18.4%	¥16M ($104K)
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	45.5K	¥1,077	-18.4%	¥34M ($218K)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	361.2K	¥1,077	-18.4%	¥389M ($2.5M)
2025-08-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	13.9K	¥1,117	-21.3%	¥16M ($100K)
2025-08-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	361.2K	¥1,117	-21.3%	¥44M ($282K)
2025-08-27	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	322.0K	¥1,144	-23.2%	¥54M ($349K)
2025-07-17	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	275.0K	¥808	+8.8%	¥38M ($244K)
2025-05-16	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	227.8K	¥797	+10.3%	¥182M ($1.2M)
2024-12-03	SELL	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	169.3K	¥1,044	+15.8%	¥76M ($490K)
2024-06-04	SELL	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	241.9K	¥1,980	+55.6%	¥97M ($628K)
2023-02-17	BUY	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	289.4K	¥1,622	-45.8%	¥74M ($478K)
2022-12-19	BUY	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	242.9K	¥1,752	-49.8%	¥426M ($2.7M)
2022-10-19	SELL	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	189.3K	¥1,840	+52.2%	¥88M ($571K)
2022-09-06	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	202.1K	¥2,358	+62.7%	¥225M ($1.4M)
2022-08-19	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	297.5K	¥2,309	-61.9%	¥687M ($4.4M)
2022-08-04	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	217.7K	¥2,143	+59.0%	¥77M ($497K)
2022-07-04	BUY	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	235.6K	¥1,464	-40.0%	¥345M ($2.2M)
2022-06-21	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	252.1K	¥1,530	+42.5%	¥59M ($383K)
2022-02-04	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	289.9K	¥1,610	-45.4%	¥96M ($619K)
2022-01-07	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	226.7K	¥1,648	+46.7%	¥77M ($498K)
2021-12-21	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	273.5K	¥1,510	-41.8%	¥75M ($481K)
2021-11-05	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	223.7K	¥1,960	-55.1%	¥438M ($2.8M)
2021-03-17	SELL	Market Buy	スパークス・アセット・マネジメント株式会社 SPARX Asset Management Co., Ltd.	passive	215.1K	¥3,320	+73.5%	¥155M ($998K)

Frequently asked questions

Who has been buying Ricksoft Co., Ltd. stock?: 5 distinct investors have filed 15 disclosed large-shareholding filings in Ricksoft Co., Ltd. (4429), most recently on 2025-11-17. 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 Ricksoft Co., Ltd. have?: Ricksoft Co., Ltd. has 15 buy-side and 8 sell-side disclosures on record, covering ¥883M ($5.7M) in total reported value, spanning 2021-03-17 to 2025-11-17.
Where does StockDrifts get Ricksoft 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 Ricksoft Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.