Who has been buying Techno Medica Co., Ltd. stock?

7 distinct investors have filed 4 disclosed large-shareholding filings in Techno Medica Co., Ltd. (6678), most recently on 2026-02-09. 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 Techno Medica Co., Ltd. have?

Techno Medica Co., Ltd. has 4 buy-side and 10 sell-side disclosures on record, covering ¥4.9B ($31.5M) in total reported value, spanning 2021-03-31 to 2026-02-09.

Where does StockDrifts get Techno Medica 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.

Techno Medica Co., Ltd. 6678

Company

株式会社テクノメディカTechno Medica Co., Ltd.

Investors

Buys

Total Value

¥4.9B ($31.5M)

Avg Return

+27.84%

Last Filing

2026-02-09

Techno Medica Co., Ltd. (6678) has 4 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥4.9B ($31.5M) in reported transaction value. The earliest filing StockDrifts holds for Techno Medica Co., Ltd. is dated 2021-03-31; the most recent is 2026-02-09. 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 +27.84%, 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
2026-07-23	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	352.2K	¥2,063	+4.9%	¥727M ($4.7M)
2026-07-23	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	375.3K	¥2,063	+4.9%	¥81M ($525K)
2026-07-23	SELL	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	129.1K	¥2,063	-4.9%	¥819M ($5.3M)
2026-06-19	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	804.0K	¥1,960	+7.0%	¥203M ($1.3M)
2026-06-19	BUY	Market Buy	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) Fidelity Management & Research Company LLC	corporate	804.0K	¥1,960	+7.0%	¥203M ($1.3M)
2026-06-19	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	112.5K	¥1,960	+7.0%	¥221M ($1.4M)
2026-06-19	SELL	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	747.6K	¥1,960	-7.0%	¥112M ($720K)
2026-06-19	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	234.9K	¥1,960	+7.0%	¥240M ($1.6M)
2026-06-19	SELL	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	632.5K	¥1,960	-7.0%	¥225M ($1.5M)
2026-06-19	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	335.9K	¥1,960	+7.0%	¥197M ($1.3M)
2026-06-19	SELL	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	525.8K	¥1,960	-7.0%	¥209M ($1.4M)
2026-02-09	SELL	unknown	實吉政知 Masatomo Saneyoshi	activist	841.6K	¥2,420	+6.7%	¥725M ($4.7M)
2026-02-09	BUY	unknown	實吉政知 Masatomo Saneyoshi	activist	841.6K	¥2,420	-6.7%	¥725M ($4.7M)
2026-02-02	BUY	unknown	實吉政知 Masatomo Saneyoshi	activist	1.1M	¥2,285	-1.2%	¥2.6B ($16.8M)
2023-12-22	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	27.4K	¥2,240	+0.8%	¥46M ($300K)
2023-12-22	SELL	unknown	ユナイテッド・マネージャーズ・ジャパン株式会社 United Managers Japan Inc.	unknown	0	¥2,240	-0.8%	¥1.1B ($7.2M)
2023-05-17	SELL	unknown	實吉繁幸 Shigeyuki Saneyoshi	activist	916.3K	¥1,781	-26.7%	¥710M ($4.6M)
2023-03-20	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	641.6K	¥1,736	+30.0%	¥154M ($991K)
2022-11-21	BUY	Market Buy	ユナイテッド・マネージャーズ・ジャパン株式会社 United Managers Japan Inc.	activist	498.3K	¥1,685	+34.0%	¥31M ($200K)
2022-10-28	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	552.9K	¥1,629	+38.5%	¥146M ($939K)
2021-05-17	SELL	unknown	鈴木満寿世 Masuyo Suzuki	unknown	0	¥1,620	-39.3%	¥389M ($2.5M)
2021-05-17	SELL	Market Buy	鈴木満寿世 Masuyo Suzuki	unknown	0	¥1,620	-39.3%	¥389M ($2.5M)
2021-05-17	BUY	Market Buy	株式会社オートニクス Autonics Corporation	strategic	967.2K	¥1,620	+39.3%	¥1.1B ($7.3M)
2021-05-17	SELL	unknown	鈴木索 Motomu Suzuki	strategic	0	¥1,620	-39.3%	¥710M ($4.6M)
2021-05-17	SELL	unknown	鈴木満寿世 Masuyo Suzuki	strategic	0	¥1,620	-39.3%	¥389M ($2.5M)
2021-05-17	BUY	unknown	株式会社オートニクス Autonics Corporation	strategic	967.2K	¥1,620	+39.3%	¥1.1B ($7.3M)
2021-05-17	SELL	unknown	鈴木満寿世 Masuyo Suzuki	unknown	0	¥1,620	-39.3%	¥389M ($2.5M)
2021-05-17	SELL	unknown	鈴木索 Motomu Suzuki	unknown	0	¥1,620	-39.3%	¥710M ($4.6M)
2021-03-31	BUY	unknown	鈴木索 Motomu Suzuki	unknown	438.0K	¥1,429.808	+57.9%	¥626M ($4.0M)
2021-03-31	SELL	unknown	鈴木満寿世 Masuyo Suzuki	unknown	239.6K	¥1,429.808	-57.9%	¥23M ($145K)
2021-03-31	BUY	unknown	株式会社オートニクス Autonics Corporation	unknown	273.6K	¥1,429.808	+57.9%	¥391M ($2.5M)
2021-03-31	BUY	unknown	鈴木索 Motomu Suzuki	other	438.0K	¥1,429.808	+57.9%	¥626M ($4.0M)
2021-03-31	BUY	unknown	株式会社オートニクス Autonics Corporation	other	273.6K	¥1,429.808	+57.9%	¥391M ($2.5M)

Frequently asked questions

Who has been buying Techno Medica Co., Ltd. stock?: 7 distinct investors have filed 4 disclosed large-shareholding filings in Techno Medica Co., Ltd. (6678), most recently on 2026-02-09. 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 Techno Medica Co., Ltd. have?: Techno Medica Co., Ltd. has 4 buy-side and 10 sell-side disclosures on record, covering ¥4.9B ($31.5M) in total reported value, spanning 2021-03-31 to 2026-02-09.
Where does StockDrifts get Techno Medica 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 Techno Medica Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.