Who has been buying Nomura Micro Science Co., Ltd. stock?

3 distinct investors have filed 15 disclosed large-shareholding filings in Nomura Micro Science Co., Ltd. (6254), most recently on 2022-07-20. 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 Nomura Micro Science Co., Ltd. have?

Nomura Micro Science Co., Ltd. has 15 buy-side and 5 sell-side disclosures on record, covering ¥1.4B ($9.0M) in total reported value, spanning 2021-07-20 to 2022-07-20.

Where does StockDrifts get Nomura Micro Science 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.

Nomura Micro Science Co., Ltd. 6254

Company

野村マイクロ・サイエンス株式会社Nomura Micro Science Co., Ltd.

Investors

Buys

Total Value

¥1.4B ($9.0M)

Avg Return

+260.57%

Last Filing

2022-07-20

Nomura Micro Science Co., Ltd. (6254) has 15 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥1.4B ($9.0M) in reported transaction value. The earliest filing StockDrifts holds for Nomura Micro Science Co., Ltd. is dated 2021-07-20; the most recent is 2022-07-20. 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 +260.57%, 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	SELL	unknown	野村アセットマネジメント株式会社	other	1.1M	¥4,300	+9.3%	¥17M ($113K)
2026-07-23	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	29.7K	¥4,300	+9.3%	¥1.8B ($11.5M)
2026-07-23	BUY	Market Buy	野村證券株式会社	other	1.1M	¥4,300	-9.3%	¥838M ($5.4M)
2026-07-22	BUY	unknown	アモーヴァ・アセットマネジメント株式会社	other	625.8K	¥4,100	-4.9%	¥2.6B ($16.6M)
2026-07-22	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社	other	1.6M	¥4,100	-4.9%	¥6.5B ($42.2M)
2026-07-06	SELL	unknown	野村アセットマネジメント株式会社	other	1.1M	¥4,700	+2.0%	¥458M ($3.0M)
2026-07-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	441.8K	¥4,700	-2.0%	¥2.1B ($13.4M)
2026-07-06	SELL	unknown	野村證券株式会社	other	882.0K	¥4,700	+2.0%	¥668M ($4.3M)
2026-06-22	SELL	unknown	野村アセットマネジメント株式会社	other	1.2M	¥5,450	+29.4%	¥22M ($143K)
2026-06-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-90.0K	¥5,450	-	-
2026-06-22	SELL	unknown	野村證券株式会社	other	1.0M	¥5,450	+29.4%	¥1.0B ($6.6M)
2026-06-04	SELL	unknown	野村アセットマネジメント株式会社	other	1.2M	¥4,455	-10.3%	¥54M ($350K)
2026-06-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	226.3K	¥4,455	-10.3%	¥1.8B ($11.8M)
2026-06-04	BUY	Market Buy	野村證券株式会社	other	1.2M	¥4,455	+10.3%	¥2.2B ($14.0M)
2026-05-21	BUY	unknown	野村證券株式会社	other	721.9K	¥4,585	-5.8%	¥3.3B ($21.4M)
2026-05-21	BUY	unknown	野村アセットマネジメント株式会社	other	1.2M	¥4,585	-5.8%	¥5.6B ($36.1M)
2026-05-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	639.1K	¥4,585	-5.8%	¥2.9B ($18.9M)
2022-07-20	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	1.5K	¥863.75	+345.1%	¥80M ($515K)
2022-07-20	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	15.5K	¥863.75	+345.1%	¥3M ($17K)
2022-07-20	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	432.2K	¥863.75	+345.1%	¥369M ($2.4M)
2022-05-06	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	9.6K	¥938.75	-309.6%	¥3M ($18K)
2022-05-06	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	11.8K	¥938.75	+309.6%	¥3M ($18K)
2022-05-06	SELL	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	568.4K	¥938.75	-309.6%	¥11M ($74K)
2022-04-05	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	11.9K	¥1,053.75	+264.9%	¥13M ($81K)
2022-04-05	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	9.3K	¥1,053.75	+264.9%	¥10M ($63K)
2022-04-05	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	581.0K	¥1,053.75	+264.9%	¥605M ($3.9M)
2021-11-18	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	6.0K	¥1,302.5	+195.2%	¥8M ($50K)
2021-11-18	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	3.9K	¥1,302.5	+195.2%	¥5M ($30K)
2021-11-18	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	638.2K	¥1,302.5	+195.2%	¥8M ($53K)
2021-10-05	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	9.6K	¥1,117.5	-244.1%	¥444M ($2.9M)
2021-10-05	SELL	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	50.3K	¥1,117.5	-244.1%	¥11M ($73K)
2021-10-05	SELL	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	642.4K	¥1,117.5	-244.1%	¥7M ($44K)
2021-08-18	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	3.7K	¥1,180	+225.8%	¥120M ($773K)
2021-08-18	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	60.9K	¥1,180	+225.8%	¥60M ($386K)
2021-08-18	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	649.1K	¥1,180	+225.8%	¥109M ($703K)
2021-08-04	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	3.1K	¥1,123.75	+242.2%	¥275M ($1.8M)
2021-08-04	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	10.4K	¥1,123.75	+242.2%	¥12M ($76K)
2021-08-04	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	556.7K	¥1,123.75	+242.2%	¥67M ($434K)
2021-07-20	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	60.0K	¥1,023.75	+275.6%	¥61M ($396K)
2021-07-20	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	496.9K	¥1,023.75	+275.6%	¥509M ($3.3M)

Frequently asked questions

Who has been buying Nomura Micro Science Co., Ltd. stock?: 3 distinct investors have filed 15 disclosed large-shareholding filings in Nomura Micro Science Co., Ltd. (6254), most recently on 2022-07-20. 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 Nomura Micro Science Co., Ltd. have?: Nomura Micro Science Co., Ltd. has 15 buy-side and 5 sell-side disclosures on record, covering ¥1.4B ($9.0M) in total reported value, spanning 2021-07-20 to 2022-07-20.
Where does StockDrifts get Nomura Micro Science 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 Nomura Micro Science Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.