Who has been buying Sun Frontier Fudousan Co., Ltd. stock?

7 distinct investors have filed 5 disclosed large-shareholding filings in Sun Frontier Fudousan Co., Ltd. (8934), most recently on 2026-04-17. 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 Sun Frontier Fudousan Co., Ltd. have?

Sun Frontier Fudousan Co., Ltd. has 5 buy-side and 5 sell-side disclosures on record, covering ¥141.4B ($912.1M) in total reported value, spanning 2021-07-01 to 2026-04-17.

Where does StockDrifts get Sun Frontier Fudousan 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.

Sun Frontier Fudousan Co., Ltd. 8934

Company

サンフロンティア不動産株式会社Sun Frontier Fudousan Co., Ltd.

Investors

Buys

Total Value

¥141.4B ($912.1M)

Avg Return

+40.70%

Last Filing

2026-04-17

Sun Frontier Fudousan Co., Ltd. (8934) has 5 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥141.4B ($912.1M) in reported transaction value. The earliest filing StockDrifts holds for Sun Frontier Fudousan Co., Ltd. is dated 2021-07-01; the most recent is 2026-04-17. 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 +40.70%, 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
2026-05-18	SELL	Market Buy	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	3.4M	¥2,402	+0.9%	¥731M ($4.7M)
2026-04-17	BUY	unknown	SI合同会社	strategic	6.7M	¥2,785	-11.6%	¥18.5B ($119.6M)
2026-04-17	BUY	unknown	伊藤忠商事株式会社	strategic	5.5M	¥2,785	-11.6%	¥15.3B ($98.8M)
2026-04-16	BUY	unknown	SI株式会社	strategic	6.7M	¥2,801	-12.1%	¥18.6B ($120.3M)
2026-04-16	BUY	unknown	伊藤忠商事株式会社	strategic	5.5M	¥2,801	-12.1%	¥15.4B ($99.4M)
2026-04-16	SELL	subscription	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	3.8M	¥2,801	+12.1%	¥8.8B ($56.8M)
2026-04-08	BUY	acquisition	伊藤忠商事株式会社 ITOCHU Corporation	strategic	5.5M	¥2,743	-6.2%	¥15.1B ($97.3M)
2026-03-11	BUY	subscription	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	6.4M	¥2,709	+2.2%	¥17.4B ($112.5M)
2026-03-04	BUY	subscription	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	6.4M	¥2,715	+2.0%	¥17.5B ($112.7M)
2025-12-05	BUY	Market Buy	堀口恵子	other	416.5K	¥2,313	-19.7%	¥1.2B ($7.4M)
2025-12-05	SELL	unknown	堀口智顕	activist	26.3K	¥2,313	-19.7%	¥73M ($470K)
2025-12-05	BUY	unknown	株式会社報恩	activist	21.0M	¥2,313	+19.7%	¥58.1B ($374.8M)
2025-12-05	BUY	unknown	堀口恵子	other	416.5K	¥2,313	-19.7%	¥1.2B ($7.4M)
2025-12-05	BUY	Market Buy	株式会社報恩	activist	21.0M	¥2,313	+19.7%	¥58.1B ($374.8M)
2025-12-05	SELL	Market Buy	堀口智顕	activist	26.3K	¥2,313	-19.7%	¥73M ($470K)
2023-12-11	BUY	unknown	株式会社報恩 Hoon Co., Ltd.	unknown	18.5M	¥1,558	+77.7%	¥858M ($5.5M)
2023-12-11	BUY	unknown	堀口智顕 Tomoaki Horiguchi	activist	21.4M	-	-	-
2023-12-11	SELL	unknown	堀口智顕 Tomoaki Horiguchi	activist	2.5M	¥1,558	-77.7%	¥828M ($5.3M)
2023-10-16	BUY	subscription	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	6.4M	¥1,438	+92.6%	¥9.3B ($59.7M)
2021-07-01	SELL	Market Buy	サマランユーシッツ(SAMARANG UCITS) SAMARANG UCITS	passive	1.9M	¥1,052	-163.2%	¥615M ($4.0M)

Frequently asked questions

Who has been buying Sun Frontier Fudousan Co., Ltd. stock?: 7 distinct investors have filed 5 disclosed large-shareholding filings in Sun Frontier Fudousan Co., Ltd. (8934), most recently on 2026-04-17. 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 Sun Frontier Fudousan Co., Ltd. have?: Sun Frontier Fudousan Co., Ltd. has 5 buy-side and 5 sell-side disclosures on record, covering ¥141.4B ($912.1M) in total reported value, spanning 2021-07-01 to 2026-04-17.
Where does StockDrifts get Sun Frontier Fudousan 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 Sun Frontier Fudousan Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.