Who has been buying Terasaki Electric Co.,Ltd. stock?

9 distinct investors have filed 3 disclosed large-shareholding filings in Terasaki Electric Co.,Ltd. (6637), most recently on 2026-05-13. 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 Terasaki Electric Co.,Ltd. have?

Terasaki Electric Co.,Ltd. has 3 buy-side and 5 sell-side disclosures on record, covering ¥1.1B ($6.9M) in total reported value, spanning 2025-01-06 to 2026-05-13.

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.

Terasaki Electric Co.,Ltd. 6637

Company

寺崎電気産業株式会社Terasaki Electric Co.,Ltd.

Investors

Buys

Total Value

¥1.1B ($6.9M)

Avg Return

+41.41%

Last Filing

2026-05-13

Terasaki Electric Co.,Ltd. (6637) has 3 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥1.1B ($6.9M) in reported transaction value. The earliest filing StockDrifts holds for Terasaki Electric Co.,Ltd. is dated 2025-01-06; the most recent is 2026-05-13. Across these filings the average return since disclosure is +41.41%, 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
2026-05-13	SELL	negotiated	株式会社芳山社	activist	653.6K	¥3,925	-11.6%	¥378M ($2.4M)
2026-05-13	BUY	negotiated	有限会社アーク	activist	400.0K	¥3,925	-	-
2026-05-13	SELL	negotiated	寺崎泰造	activist	1.1M	¥3,925	-11.6%	¥61M ($396K)
2026-05-13	BUY	Market Buy	有限会社ファーストゲート	activist	85.0K	¥3,925	+11.6%	¥332M ($2.1M)
2026-05-13	BUY	negotiated	株式会社芳山社	activist	653.6K	¥3,925	-	-
2026-05-13	BUY	negotiated	有限会社アーク	activist	400.0K	¥3,925	-	-
2026-05-13	SELL	negotiated	寺崎泰造	activist	1.1M	¥3,925	-11.6%	¥61M ($396K)
2026-05-13	BUY	Market Buy	有限会社ファーストゲート	activist	85.0K	¥3,925	+11.6%	¥332M ($2.1M)
2026-05-12	BUY	negotiated	株式会社寺崎	strategic	2.2M	¥3,965	-	-
2026-05-12	SELL	negotiated	寺崎雄造	strategic	677.4K	¥3,965	-10.5%	¥129M ($833K)
2026-05-12	BUY	negotiated	テラサキトラスト株式会社	strategic	101.9K	¥3,965	-	-
2025-12-17	BUY	negotiated	株式会社寺崎	activist	2.2M	¥4,410	-	-
2025-12-17	SELL	negotiated	テラサキトラスト株式会社	activist	101.9K	¥4,410	+0.7%	¥3.4B ($21.8M)
2025-12-17	SELL	negotiated	テラサキトラスト株式会社	activist	101.9K	¥4,410	+0.7%	¥3.4B ($21.8M)
2025-12-17	BUY	negotiated	株式会社寺崎	activist	2.2M	¥4,410	-	-
2025-01-06	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	360.0K	¥2,478	+76.8%	¥892M ($5.8M)
2025-01-06	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	300.5K	¥2,478	+76.8%	¥745M ($4.8M)

Frequently asked questions

Who has been buying Terasaki Electric Co.,Ltd. stock?: 9 distinct investors have filed 3 disclosed large-shareholding filings in Terasaki Electric Co.,Ltd. (6637), most recently on 2026-05-13. 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 Terasaki Electric Co.,Ltd. have?: Terasaki Electric Co.,Ltd. has 3 buy-side and 5 sell-side disclosures on record, covering ¥1.1B ($6.9M) in total reported value, spanning 2025-01-06 to 2026-05-13.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.