Who has been buying Nihon Kohden Corporation stock?

16 distinct investors have filed 29 disclosed large-shareholding filings in Nihon Kohden Corporation (6849), 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 Nihon Kohden Corporation have?

Nihon Kohden Corporation has 29 buy-side and 21 sell-side disclosures on record, covering ¥67.6B ($435.9M) in total reported value, spanning 2021-06-03 to 2026-05-13.

Where does StockDrifts get Nihon Kohden 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.

Nihon Kohden Corporation 6849

Company

日本光電工業株式会社Nihon Kohden Corporation

Investors

Buys

Total Value

¥67.6B ($435.9M)

Avg Return

-12.86%

Last Filing

2026-05-13

Nihon Kohden Corporation (6849) has 29 disclosed large-shareholding filings and 21 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥67.6B ($435.9M) in reported transaction value. The earliest filing StockDrifts holds for Nihon Kohden Corporation is dated 2021-06-03; the most recent is 2026-05-13. 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 -12.86%, 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
2026-08-12	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	8.6M	¥1,516.5	+2.2%	¥2.8B ($18.1M)
2026-06-18	BUY	Market Buy	ファースト・イーグル・セパレート・アカウント・マネジメント・エルエルシー First Eagle Separate Account Management, LLC	other	2.4M	¥1,385	+12.4%	¥1.7B ($10.8M)
2026-06-18	BUY	Market Buy	ファースト・イーグル・インベストメント・マネジメント・エルエルシー First Eagle Investment Management, LLC	other	10.1M	¥1,385	+12.4%	¥1.3B ($8.7M)
2026-06-15	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	29.1K	¥1,337.5	-12.2%	¥1.1B ($7.2M)
2026-06-15	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	1.5M	¥1,337.5	+12.2%	¥23M ($148K)
2026-06-15	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	3.0M	¥1,337.5	-12.2%	¥1.1B ($7.4M)
2026-06-15	BUY	negotiated	株式会社三菱UFJ銀行	strategic	2.7M	¥1,337.5	+12.2%	¥3.5B ($22.9M)
2026-05-13	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	10.4M	¥1,431	+0.8%	¥2.5B ($16.4M)
2026-02-04	BUY	Market Buy	ファースト・イーグル・インベストメント・マネジメント・エルエルシー（First Eagle Investment Management, LLC） First Eagle Investment Management, LLC	other	10.3M	¥1,712.5	-9.8%	¥2.9B ($18.9M)
2026-01-09	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	12.2M	¥1,777.5	+13.1%	¥3.2B ($20.4M)
2025-10-06	BUY	unknown	ファースト・イーグル・セパレート・アカウント・マネジメント・エルエルシー(First Eagle Separate Account Management First Eagle Separate Account Management, LLC	other	725.7K	¥1,778.5	-13.1%	¥1.3B ($8.3M)
2025-10-06	BUY	unknown	ファースト・イーグル・インベストメント・マネジメント・エルエルシー(First Eagle Investment Management First Eagle Investment Management, LLC	other	7.8M	¥1,778.5	-13.1%	¥13.9B ($89.9M)
2025-09-19	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	2.7M	¥1,717	-10.0%	¥235M ($1.5M)
2025-09-19	BUY	Market Buy	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	5.3M	¥1,717	-10.0%	¥646M ($4.2M)
2025-09-19	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	2.4M	¥1,717	-10.0%	¥117M ($758K)
2025-09-19	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	14.0M	¥1,717	+10.0%	¥3.3B ($21.6M)
2025-06-16	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	2.7M	¥1,698.5	-9.0%	¥4.5B ($29.0M)
2025-06-16	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	870.4K	¥1,698.5	-9.0%	¥1.5B ($9.5M)
2025-06-16	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.5M	¥1,698.5	-9.0%	¥2.6B ($16.5M)
2025-06-16	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	3.8M	¥1,698.5	-9.0%	¥6.5B ($42.0M)
2025-05-26	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	15.9M	¥1,693	+8.7%	¥3.1B ($20.0M)
2025-05-21	BUY	Market Buy	バリューアクト・ジャパン・マスター・ファンド・エルピー (ValueAct Japan Master Fund ValueAct Japan Master Fund LP	activist	6.6M	¥1,832.5	-15.7%	¥11.9B ($76.8M)
2025-05-21	BUY	Market Buy	バリューアクト・キャピタル・マネジメント・エルピー (ValueAct Capital Management ValueAct Capital Management	activist	0	¥1,832.5	-15.7%	-
2025-04-24	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	17.8M	¥1,739	+11.1%	¥3.3B ($21.1M)
2025-01-20	SELL	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	19.6M	¥2,094.5	+26.2%	¥3.9B ($25.0M)
2024-09-24	BUY	Market Buy	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	21.5M	¥2,119	-27.1%	¥3.9B ($25.0M)
2024-09-24	BUY	unknown	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	21.5M	¥2,119	-27.1%	¥3.9B ($25.0M)
2024-08-14	BUY	Market Buy	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	19.6M	¥1,846.5	-16.3%	¥3.2B ($20.8M)
2024-07-29	BUY	Market Buy	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	54.7K	¥2,307.5	-33.0%	¥11.4B ($73.6M)
2024-07-29	BUY	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.4M	¥2,307.5	-33.0%	¥237M ($1.5M)
2024-07-29	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	4.1M	¥2,307.5	+33.0%	¥1.3B ($8.7M)
2024-07-29	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	2.7M	¥2,307.5	-33.0%	¥197M ($1.3M)
2024-06-20	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.3M	¥2,323.5	+33.5%	¥103M ($661K)
2024-06-20	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	2.5M	¥2,323.5	+33.5%	¥595M ($3.8M)
2024-06-20	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.2M	¥2,323.5	-33.5%	¥2.8B ($18.0M)
2024-01-10	SELL	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.4M	¥2,332	+33.7%	¥453M ($2.9M)
2024-01-10	SELL	Market Buy	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	2.8M	¥2,332	+33.7%	¥1.6B ($10.5M)
2024-01-10	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.2M	¥2,332	-33.7%	¥21M ($133K)
2023-12-25	BUY	acquisition	バリューアクト・ジャパン・マスター・ファンド・エルピー (ValueAct Japan Master Fund ValueAct Japan Master Fund LP	activist	4.4M	¥1,864	-17.1%	¥8.2B ($53.1M)
2023-12-25	BUY	acquisition	バリューアクト・キャピタル・マネジメント・エルピー (ValueAct Capital Management ValueAct Capital Management	activist	0	¥1,864	-17.1%	-
2023-04-07	BUY	Market Buy	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	1.8M	¥1,795	-13.9%	¥1.7B ($10.9M)
2023-04-07	BUY	Market Buy	株式会社埼玉りそな銀行 Saitama Resona Bank, Limited	strategic	4.2M	¥1,795	-13.9%	¥32M ($204K)
2022-09-20	SELL	Market Buy	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	98.9K	¥1,496.5	-3.3%	¥26M ($170K)
2022-09-20	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	672.3K	¥1,496.5	+3.3%	¥436M ($2.8M)
2022-09-20	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.4M	¥1,496.5	-3.3%	¥1.7B ($10.8M)
2022-09-20	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.3M	¥1,496.5	+3.3%	¥13M ($85K)
2022-07-22	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	3.9M	¥1,555	+0.6%	¥1.8B ($11.9M)
2022-06-06	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	5.1M	¥1,507.5	-2.5%	¥1.5B ($9.7M)
2022-05-16	BUY	Market Buy	スプラウスグローブ・インベストメント・マネジメント・リミテッド(Sprucegrove Investment Management Ltd.) Sprucegrove Investment Management Ltd.	other	9.3M	¥1,530	+1.0%	¥1.4B ($8.9M)
2022-04-06	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	6.1M	¥1,492.5	-3.5%	¥1.4B ($8.7M)

Showing the 50 most recent of 60 filings.

Frequently asked questions

Who has been buying Nihon Kohden Corporation stock?: 16 distinct investors have filed 29 disclosed large-shareholding filings in Nihon Kohden Corporation (6849), 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 Nihon Kohden Corporation have?: Nihon Kohden Corporation has 29 buy-side and 21 sell-side disclosures on record, covering ¥67.6B ($435.9M) in total reported value, spanning 2021-06-03 to 2026-05-13.
Where does StockDrifts get Nihon Kohden 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 Nihon Kohden Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.