Who has been buying Estic Corporation stock?

6 distinct investors have filed 16 disclosed large-shareholding filings in Estic Corporation (6161), most recently on 2026-04-30. 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 Estic Corporation have?

Estic Corporation has 16 buy-side and 2 sell-side disclosures on record, covering ¥2.1B ($13.7M) in total reported value, spanning 2024-02-22 to 2026-04-30.

Where does StockDrifts get Estic 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.

Estic Corporation 6161

Company

株式会社エスティックEstic Corporation

Investors

Buys

Total Value

¥2.1B ($13.7M)

Avg Return

+9.55%

Last Filing

2026-04-30

Estic Corporation (6161) has 16 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥2.1B ($13.7M) in reported transaction value. The earliest filing StockDrifts holds for Estic Corporation is dated 2024-02-22; the most recent is 2026-04-30. 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 +9.55%, 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
2026-06-11	BUY	Market Buy	奥村学	activist	1.1M	¥1,033	-0.3%	¥122M ($784K)
2026-06-11	BUY	unknown	株式会社フラクタル・ビジネス	other	515.6K	¥1,033	-0.3%	¥533M ($3.4M)
2026-06-08	BUY	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	54.8K	¥1,025	+1.1%	¥56M ($362K)
2026-06-08	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	118.0K	¥1,025	+1.1%	¥121M ($780K)
2026-06-08	BUY	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	460.3K	¥1,025	+1.1%	¥472M ($3.0M)
2026-04-30	BUY	Market Buy	奥村学	other	931.9K	¥1,013	+1.2%	¥136M ($877K)
2026-04-30	BUY	unknown	株式会社フラクタル・ビジネス	other	515.6K	¥1,013	+1.2%	¥522M ($3.4M)
2026-04-07	BUY	Market Buy	奥村学	other	798.0K	¥1,018	-0.5%	¥125M ($804K)
2026-04-07	BUY	Market Buy	株式会社フラクタル・ビジネス	other	515.6K	¥1,018	-0.5%	¥525M ($3.4M)
2026-02-02	BUY	Market Buy	奥村学	other	675.5K	¥1,030	-0.4%	¥693M ($4.5M)
2026-02-02	BUY	Market Buy	株式会社フラクタル・ビジネス	other	515.6K	¥1,030	-0.4%	¥529M ($3.4M)
2026-01-29	SELL	Market Buy	鈴木弘(相続人代表鈴木弘英)	other	0	¥1,004	-2.2%	-
2026-01-29	BUY	unknown	鈴木弘英	other	1.7M	¥1,004	-2.2%	¥1.7B ($11.2M)
2026-01-29	SELL	unknown	鈴木弘(相続人代表鈴木弘英)	other	0	¥1,004	-2.2%	-
2026-01-29	BUY	unknown	弘鈴興産株式会社	strategic	800.0K	¥1,004	-2.2%	¥821M ($5.3M)
2026-01-29	BUY	Market Buy	鈴木弘英	other	1.7M	¥1,004	-2.2%	¥1.7B ($11.2M)
2026-01-29	BUY	Market Buy	弘鈴興産株式会社	strategic	800.0K	¥1,004	-2.2%	¥821M ($5.3M)
2025-07-28	BUY	Market Buy	奥村学 Manabu Okumura	other	616.1K	¥982	+4.5%	¥126M ($813K)
2025-07-28	BUY	Market Buy	株式会社フラクタル・ビジネス Fractal Business Inc.	other	455.6K	¥982	+4.5%	¥447M ($2.9M)
2025-07-11	BUY	unknown	奥村学 Manabu Okumura	other	488.6K	¥963	+6.5%	¥3M ($22K)
2025-07-11	BUY	Market Buy	奥村学 Manabu Okumura	other	488.6K	¥963	+6.5%	¥3M ($22K)
2025-07-11	BUY	Market Buy	株式会社フラクタル・ビジネス Fractal Business Inc.	other	455.6K	¥963	+6.5%	¥110M ($709K)
2025-07-11	BUY	unknown	株式会社フラクタル・ビジネス Fractal Business Inc.	other	455.6K	¥963	+6.5%	¥110M ($709K)
2025-05-07	BUY	Market Buy	奥村学 Manabu Okumura	other	484.6K	¥828	+23.9%	¥76M ($490K)
2025-05-07	BUY	Market Buy	株式会社フラクタル・ビジネス Fractal Business Inc.	other	341.7K	¥828	+23.9%	¥21M ($138K)
2025-04-17	BUY	unknown	奥村学 Manabu Okumura	other	392.9K	¥823	+24.7%	¥32M ($206K)
2025-04-17	BUY	unknown	奥村学 Manabu Okumura	other	392.9K	¥823	+24.7%	¥32M ($206K)
2025-04-17	BUY	unknown	株式会社フラクタル・ビジネス Fractal Business Inc.	other	315.7K	¥823	+24.7%	¥66M ($425K)
2025-04-17	BUY	unknown	株式会社フラクタル・ビジネス Fractal Business Inc.	other	315.7K	¥823	+24.7%	¥66M ($425K)
2025-02-12	BUY	unknown	奥村学 Manabu Okumura	other	354.1K	¥936	+9.6%	¥331M ($2.1M)
2025-02-12	BUY	unknown	株式会社フラクタル・ビジネス Fractal Business Inc.	other	235.0K	¥936	+9.6%	¥220M ($1.4M)
2024-02-22	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	633.1K	¥960	+6.9%	¥608M ($3.9M)

Frequently asked questions

Who has been buying Estic Corporation stock?: 6 distinct investors have filed 16 disclosed large-shareholding filings in Estic Corporation (6161), most recently on 2026-04-30. 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 Estic Corporation have?: Estic Corporation has 16 buy-side and 2 sell-side disclosures on record, covering ¥2.1B ($13.7M) in total reported value, spanning 2024-02-22 to 2026-04-30.
Where does StockDrifts get Estic 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 Estic Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.