Who has been buying Sun* Inc. stock?

10 distinct investors have filed 8 disclosed large-shareholding filings in Sun* Inc. (4053), most recently on 2024-09-18. 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 Sun* Inc. have?

Sun* Inc. has 8 buy-side and 18 sell-side disclosures on record, covering ¥21.3B ($137.2M) in total reported value, spanning 2021-03-29 to 2024-09-18.

Where does StockDrifts get Sun* 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.

Sun* Inc. 4053

Company

株式会社Sun AsteriskSun* Inc.

Investors

Buys

Total Value

¥21.3B ($137.2M)

Avg Return

-73.94%

Last Filing

2024-09-18

Sun* Inc. (4053) has 8 disclosed large-shareholding filings and 18 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥21.3B ($137.2M) in reported transaction value. The earliest filing StockDrifts holds for Sun* Inc. is dated 2021-03-29; the most recent is 2024-09-18. 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 -73.94%, 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
2026-08-12	SELL	unknown	藤本一成 Fujimoto Kazunari	unknown	3.2M	¥444	-0.5%	¥38M ($246K)
2024-09-18	SELL	unknown	服部裕輔 Yusuke Hattori	strategic	5.4M	¥545	+19.8%	¥210M ($1.4M)
2024-08-14	SELL	unknown	小林泰平 Taihei Kobayashi	strategic	2.9M	¥830	+47.4%	¥85M ($551K)
2023-10-05	SELL	unknown	平井誠人 Makoto Hirai	strategic	11.7M	¥1,325	+67.0%	¥338M ($2.2M)
2023-10-05	BUY	unknown	平井誠人 Makoto Hirai	strategic	11.7M	¥1,325	-67.0%	¥5M ($33K)
2023-08-09	BUY	unknown	藤本一成 Fujimoto Kazunari	strategic	3.2M	¥1,151	-62.0%	¥35M ($226K)
2023-08-09	BUY	unknown	藤本一成 Fujimoto Kazunari	strategic	3.2M	¥1,151	-62.0%	¥35M ($226K)
2023-08-09	BUY	unknown	藤本一成 Fujimoto Kazunari	strategic	3.2M	¥1,151	-62.0%	¥3.7B ($23.9M)
2023-06-07	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	unknown	0	¥1,246	+64.9%	¥52M ($336K)
2023-06-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.3M	¥1,246	-64.9%	¥1.6B ($10.3M)
2023-06-07	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	107.3K	¥1,246	+64.9%	¥33M ($214K)
2023-05-16	SELL	unknown	平井誠人 Makoto Hirai	strategic	11.7M	¥1,284	+66.0%	¥322M ($2.1M)
2023-05-16	SELL	unknown	服部裕輔 Yusuke Hattori	strategic	5.8M	¥1,284	+66.0%	¥279M ($1.8M)
2023-05-16	BUY	unknown	平井誠人 Makoto Hirai	strategic	11.7M	¥1,284	-66.0%	¥307M ($2.0M)
2023-05-16	BUY	unknown	服部裕輔 Yusuke Hattori	strategic	5.8M	¥1,284	-66.0%	¥259M ($1.7M)
2023-02-07	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	42.2K	¥1,461	-70.1%	¥62M ($398K)
2023-02-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.8M	¥1,461	-70.1%	¥2.6B ($17.0M)
2023-02-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	132.5K	¥1,461	-70.1%	¥194M ($1.2M)
2022-06-17	BUY	unknown	藤本一成 Fujimoto Kazunari	strategic	3.2M	¥881	-50.4%	¥2.8B ($18.3M)
2022-06-17	BUY	unknown	藤本一成 Fujimoto Kazunari	strategic	3.2M	¥881	-50.4%	¥2.8B ($18.3M)
2022-04-19	BUY	unknown	藤本一成 Fujimoto Kazunari	strategic	3.2M	¥1,756	-75.1%	¥5.7B ($36.5M)
2022-01-21	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.4M	¥1,696	-74.2%	¥2.4B ($15.4M)
2022-01-21	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	161.0K	¥1,696	+74.2%	¥416M ($2.7M)
2021-12-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.7M	¥2,245	-80.5%	¥3.7B ($24.1M)
2021-12-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	406.1K	¥2,245	-80.5%	¥912M ($5.9M)
2021-12-13	SELL	unknown	フリースタイル合同会社 Freestyle LLC	strategic	400.0K	¥2,305	+81.0%	¥26M ($168K)
2021-12-13	SELL	unknown	平井誠人 Makoto Hirai	strategic	11.8M	¥2,305	+81.0%	¥2.9B ($18.4M)
2021-12-13	SELL	unknown	藤本一成 Kazunari Fujimoto	strategic	3.2M	¥2,305	+81.0%	¥878M ($5.7M)
2021-12-13	BUY	unknown	藤本一成 Kazunari Fujimoto	strategic	3.2M	¥2,305	-81.0%	¥878M ($5.7M)
2021-12-13	BUY	unknown	服部裕輔 Yusuke Hattori	strategic	5.9M	¥2,305	-81.0%	¥13.5B ($87.0M)
2021-10-29	SELL	subscription	平野俊博 TOSHIHIRO HIRANO	activist	1.8M	¥2,437	+82.1%	¥2.9B ($19.0M)
2021-09-03	SELL	unknown	平井誠人 Makoto Hirai	strategic	13.0M	¥2,264	+80.7%	¥674M ($4.3M)
2021-07-02	SELL	Market Buy	農林中央金庫 The Norinchukin Bank	passive	1.8M	¥2,122	+79.4%	¥839M ($5.4M)
2021-06-03	SELL	unknown	藤本一成 Kazunari Fujimoto	strategic	3.6M	¥2,095	+79.1%	¥308M ($2.0M)
2021-06-03	BUY	unknown	藤本一成 Kazunari Fujimoto	strategic	3.6M	¥2,095	-79.1%	¥308M ($2.0M)
2021-04-13	BUY	unknown	小林泰平 Taihei Kobayashi	strategic	2.9M	¥2,361	-81.5%	¥6.9B ($44.5M)
2021-04-13	BUY	unknown	小林泰平 Taihei Kobayashi	strategic	2.9M	¥2,361	-81.5%	¥6.9B ($44.5M)
2021-04-07	BUY	unknown	平井誠人 Makoto Hirai	strategic	13.0M	¥2,445	-82.1%	¥31.9B ($205.5M)
2021-03-29	SELL	unknown	フリースタイル合同会社 Freestyle LLC	strategic	400.0K	¥2,458	+82.2%	¥9M ($58K)
2021-03-29	SELL	unknown	小林泰平 Taihei Kobayashi	strategic	2.9M	¥2,458	+82.2%	¥118M ($759K)
2021-03-29	SELL	unknown	服部裕輔 Yusuke Hattori	strategic	7.1M	¥2,458	+82.2%	¥308M ($2.0M)

Frequently asked questions

Who has been buying Sun* Inc. stock?: 10 distinct investors have filed 8 disclosed large-shareholding filings in Sun* Inc. (4053), most recently on 2024-09-18. 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 Sun* Inc. have?: Sun* Inc. has 8 buy-side and 18 sell-side disclosures on record, covering ¥21.3B ($137.2M) in total reported value, spanning 2021-03-29 to 2024-09-18.
Where does StockDrifts get Sun* 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 Sun* Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.