Who has been buying ALCONIX Corporation stock?

9 distinct investors have filed 4 disclosed large-shareholding filings in ALCONIX Corporation (3036), most recently on 2025-09-04. 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 ALCONIX Corporation have?

ALCONIX Corporation has 4 buy-side and 15 sell-side disclosures on record, covering ¥245M ($1.6M) in total reported value, spanning 2021-12-06 to 2025-09-04.

Where does StockDrifts get ALCONIX 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.

ALCONIX Corporation 3036

Company

アルコニックス株式会社ALCONIX Corporation

Investors

Buys

Total Value

¥245M ($1.6M)

Avg Return

+88.78%

Last Filing

2025-09-04

ALCONIX Corporation (3036) has 4 disclosed large-shareholding filings and 15 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥245M ($1.6M) in reported transaction value. The earliest filing StockDrifts holds for ALCONIX Corporation is dated 2021-12-06; the most recent is 2025-09-04. 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 +88.78%, 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
2025-09-04	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	437.4K	¥2,194	+18.6%	¥116M ($748K)
2025-09-04	SELL	negotiated	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	686.8K	¥2,194	-18.6%	¥184M ($1.2M)
2025-09-04	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	320.8K	¥2,194	-18.6%	¥607M ($3.9M)
2024-04-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.2M	¥1,410	-84.5%	¥512M ($3.3M)
2024-03-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.6M	¥1,409	-84.7%	¥534M ($3.4M)
2024-01-11	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.0M	¥1,376	-89.1%	¥478M ($3.1M)
2023-12-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.3M	¥1,322	-96.8%	¥595M ($3.8M)
2023-10-20	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.8M	¥1,340	-94.2%	¥466M ($3.0M)
2023-07-24	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	682.4K	¥1,420	-83.2%	¥405M ($2.6M)
2023-07-24	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	130.0K	¥1,420	+83.2%	¥185M ($1.2M)
2023-07-24	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	792.0K	¥1,420	-83.2%	¥225M ($1.4M)
2023-06-07	SELL	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.4M	¥1,333	-95.2%	¥83M ($533K)
2023-06-07	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	158.1K	¥1,333	-95.2%	¥327M ($2.1M)
2023-04-20	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	385.8K	¥1,382	-88.3%	¥64M ($415K)
2023-04-20	BUY	negotiated	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	770.4K	¥1,382	+88.3%	¥30M ($194K)
2023-04-20	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	595.2K	¥1,382	-88.3%	¥403M ($2.6M)
2021-12-07	SELL	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.2M	¥1,221	-113.1%	¥159M ($1.0M)
2021-12-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	338.2K	¥1,221	+113.1%	¥413M ($2.7M)
2021-12-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	360.5K	¥1,161	+124.1%	¥100M ($642K)
2021-12-06	BUY	negotiated	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	626.0K	¥1,161	+124.1%	¥106M ($681K)
2021-12-06	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	744.0K	¥1,161	-124.1%	¥3M ($19K)

Frequently asked questions

Who has been buying ALCONIX Corporation stock?: 9 distinct investors have filed 4 disclosed large-shareholding filings in ALCONIX Corporation (3036), most recently on 2025-09-04. 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 ALCONIX Corporation have?: ALCONIX Corporation has 4 buy-side and 15 sell-side disclosures on record, covering ¥245M ($1.6M) in total reported value, spanning 2021-12-06 to 2025-09-04.
Where does StockDrifts get ALCONIX 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 ALCONIX Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.