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

3 distinct investors have filed 14 disclosed large-shareholding filings in AUTOWAVE Co., Ltd. (2666), most recently on 2026-02-26. 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 AUTOWAVE Co., Ltd. have?

AUTOWAVE Co., Ltd. has 14 buy-side and 3 sell-side disclosures on record, covering ¥217M ($1.4M) in total reported value, spanning 2021-04-06 to 2026-02-26.

Where does StockDrifts get AUTOWAVE 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.

AUTOWAVE Co., Ltd. 2666

Company

株式会社オートウェーブAUTOWAVE Co., Ltd.

Investors

Buys

Total Value

¥217M ($1.4M)

Avg Return

+18.54%

Last Filing

2026-02-26

AUTOWAVE Co., Ltd. (2666) has 14 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥217M ($1.4M) in reported transaction value. The earliest filing StockDrifts holds for AUTOWAVE Co., Ltd. is dated 2021-04-06; the most recent is 2026-02-26. 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 +18.54%, 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
2026-02-26	BUY	Market Buy	ウェーブ会理事長佐野公彦 sano kimihiko	strategic	1.3M	¥176	-5.7%	¥26M ($166K)
2024-04-04	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	619.8K	¥157	-5.7%	¥17M ($113K)
2024-03-29	SELL	unknown	ウェーブ会理事長佐野公彦 sano kimihiko	strategic	1.2M	¥161	-3.1%	¥26M ($165K)
2024-01-10	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	731.4K	¥161	+3.1%	¥118M ($760K)
2023-12-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	140.8K	¥157	+5.7%	¥21M ($134K)
2023-07-28	BUY	Market Buy	廣岡大介 Daisuke Hirooka	activist	2.2M	¥189	-12.2%	¥8M ($51K)
2023-06-21	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	783.8K	¥177	-6.2%	¥139M ($895K)
2023-04-20	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	103.5K	¥205	-19.0%	¥20M ($127K)
2023-04-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	783.6K	¥205	-19.0%	¥161M ($1.0M)
2022-03-14	BUY	Market Buy	廣岡大介 Daisuke Hirooka	activist	2.2M	¥104	+59.6%	¥15M ($100K)
2021-11-05	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	649.6K	¥118	-40.7%	¥18M ($113K)
2021-10-21	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	797.7K	¥117	+41.9%	¥93M ($602K)
2021-09-29	BUY	Market Buy	ウェーブ会理事長佐野公彦 sano kimihiko	strategic	1.3M	¥118	+40.7%	¥17M ($111K)
2021-08-05	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	116.4K	¥120	+38.3%	¥13M ($85K)
2021-07-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	754.3K	¥120	+38.3%	¥91M ($584K)
2021-04-21	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	113.1K	¥113	+46.9%	¥12M ($77K)
2021-04-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	753.7K	¥112.899	+47.0%	¥85M ($549K)

Frequently asked questions

Who has been buying AUTOWAVE Co., Ltd. stock?: 3 distinct investors have filed 14 disclosed large-shareholding filings in AUTOWAVE Co., Ltd. (2666), most recently on 2026-02-26. 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 AUTOWAVE Co., Ltd. have?: AUTOWAVE Co., Ltd. has 14 buy-side and 3 sell-side disclosures on record, covering ¥217M ($1.4M) in total reported value, spanning 2021-04-06 to 2026-02-26.
Where does StockDrifts get AUTOWAVE 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 AUTOWAVE Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.