Who has been buying Disco Corporation stock?

17 distinct investors have filed 24 disclosed large-shareholding filings in Disco Corporation (6146), most recently on 2025-09-19. 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 Disco Corporation have?

Disco Corporation has 24 buy-side and 24 sell-side disclosures on record, covering ¥481.3B ($3.1B) in total reported value, spanning 2021-09-17 to 2025-09-19.

Where does StockDrifts get Disco 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.

Disco Corporation 6146

Company

株式会社ディスコDisco Corporation

Investors

Buys

Total Value

¥481.3B ($3.1B)

Avg Return

+228.65%

Last Filing

2025-09-19

Disco Corporation (6146) has 24 disclosed large-shareholding filings and 24 disclosed disposals on record, filed by 17 distinct investors. Together those filings cover ¥481.3B ($3.1B) in reported transaction value. The earliest filing StockDrifts holds for Disco Corporation is dated 2021-09-17; the most recent is 2025-09-19. 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 +228.65%, 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
2025-09-19	SELL	unknown	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	¥47,610	-53.2%	¥4.1B ($26.6M)
2025-09-19	SELL	unknown	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	3.1M	¥47,610	-53.2%	¥34.6B ($223.2M)
2025-04-16	BUY	Market Buy	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	unknown	0	¥25,975	+180.8%	-
2025-04-16	BUY	Market Buy	株式会社オレンジコーラル Orange Coral Co., Ltd.	strategic	500.9K	¥25,975	+180.8%	¥13.0B ($83.6M)
2025-04-16	SELL	Market Buy	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	strategic	5.0M	¥25,975	-180.8%	¥13.2B ($85.4M)
2025-04-16	BUY	unknown	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	unknown	0	¥25,975	+180.8%	-
2025-04-16	BUY	unknown	株式会社オレンジコーラル Orange Coral Co., Ltd.	strategic	500.9K	¥25,975	+180.8%	¥13.0B ($83.6M)
2025-04-16	SELL	unknown	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	strategic	5.0M	¥25,975	-180.8%	¥13.2B ($85.4M)
2025-04-16	SELL	unknown	関家圭三 Keizo Sekiya	strategic	125.4K	¥25,975	-180.8%	¥1.2T ($7.8B)
2025-04-16	BUY	Market Buy	関家圭三 Keizo Sekiya	strategic	125.4K	¥25,975	+180.8%	¥337.8B ($2.2B)
2024-05-08	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.8M	¥49,860	-46.3%	¥540M ($3.5M)
2024-05-08	SELL	unknown	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	3.8M	¥49,860	-46.3%	¥67.0B ($432.2M)
2024-04-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.8M	¥49,800	+46.5%	¥44.3B ($285.5M)
2024-04-19	SELL	unknown	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	5.1M	¥49,800	-46.5%	¥38.3B ($247.2M)
2024-04-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	5.6M	¥54,560	+33.7%	¥305.5B ($2.0B)
2024-04-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	337.2K	¥54,560	+33.7%	¥18.4B ($118.7M)
2024-04-03	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	1.8M	¥56,210	+29.8%	¥14.0B ($90.4M)
2024-04-03	BUY	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	117.2K	¥56,210	+29.8%	¥6.6B ($42.5M)
2024-04-03	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	255.8K	¥56,210	+29.8%	¥4.3B ($27.5M)
2024-04-03	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	235.3K	¥56,210	+29.8%	¥609M ($3.9M)
2024-04-03	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	2.1M	¥56,210	+29.8%	¥17.1B ($110.0M)
2024-04-03	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	1.4M	¥56,210	+29.8%	¥11.6B ($74.7M)
2024-04-03	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	683.9K	¥56,210	+29.8%	¥3.0B ($19.6M)
2024-04-03	BUY	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	111.7K	¥56,210	+29.8%	¥6.3B ($40.5M)
2023-09-22	SELL	Market Buy	エーピージーアセットマネジメントエヌヴィー(APG Asset Management N.V.) APG Asset Management N.V.	passive	4.3M	¥25,965	-181.0%	¥28.4B ($183.3M)
2023-06-06	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	1.2M	¥21,570	+238.2%	¥26.3B ($169.7M)
2023-06-06	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	1.6M	¥21,570	+238.2%	¥33.7B ($217.7M)
2023-06-06	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	629.0K	¥21,570	+238.2%	¥13.6B ($87.5M)
2023-06-06	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	183.4K	¥21,570	+238.2%	¥4.0B ($25.5M)
2023-06-06	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	225.2K	¥21,570	+238.2%	¥4.9B ($31.3M)
2023-06-06	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	1.8M	¥21,570	+238.2%	¥39.4B ($254.4M)
2023-03-02	BUY	unknown	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	unknown	0	¥13,999.99	+421.1%	-
2023-03-02	BUY	unknown	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	strategic	1.8M	¥13,999.99	+421.1%	¥25.9B ($166.9M)
2023-03-02	SELL	unknown	関家圭三 Keizo Sekiya	strategic	198.9K	¥13,999.99	-421.1%	¥2.6B ($17.0M)
2023-01-10	SELL	unknown	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	2.0M	¥12,883.32	-466.2%	¥47M ($300K)
2023-01-10	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	637.5K	¥12,883.32	+466.2%	¥698M ($4.5M)
2022-11-21	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	585.0K	¥13,499.99	-440.4%	¥49M ($314K)
2022-11-21	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	2.0M	¥13,499.99	+440.4%	¥97M ($629K)
2022-10-20	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	588.5K	¥10,333.32	-606.0%	¥75M ($481K)
2022-10-20	SELL	unknown	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	2.0M	¥10,333.32	-606.0%	¥485M ($3.1M)
2022-09-22	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	594.2K	¥11,383.32	-540.9%	¥575M ($3.7M)
2022-09-22	SELL	unknown	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	2.0M	¥11,383.32	-540.9%	¥82M ($530K)
2022-06-22	BUY	acquisition	エーピージーアセットマネジメントエヌヴィー(APG Asset Management N.V.) APG Asset Management N.V.	passive	1.8M	¥9,969.99	+631.7%	¥18.0B ($116.4M)
2022-06-22	BUY	Market Buy	エーピージーアセットマネジメントエヌヴィー(APG Asset Management N.V.) APG Asset Management N.V.	passive	1.8M	¥9,969.99	+631.7%	¥18.0B ($116.4M)
2022-05-10	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	645.6K	¥10,399.99	+601.4%	¥751M ($4.8M)
2022-05-10	SELL	unknown	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	2.0M	¥10,399.99	-601.4%	¥638M ($4.1M)
2022-01-17	BUY	unknown	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	unknown	0	¥11,733.32	+521.7%	-
2022-01-17	SELL	unknown	株式会社オレンジコーラル Orange Coral Co., Ltd.	strategic	194.3K	¥11,733.32	-521.7%	¥4.3B ($27.6M)
2022-01-17	BUY	unknown	株式会社ダイイチ企業 Daiichi Enterprise Co., Ltd.	strategic	1.8M	¥11,733.32	+521.7%	¥21.7B ($139.9M)
2022-01-17	BUY	unknown	関家圭三 Keizo Sekiya	strategic	386.2K	¥11,733.32	+521.7%	¥4.5B ($29.2M)

Showing the 50 most recent of 60 filings.

Frequently asked questions

Who has been buying Disco Corporation stock?: 17 distinct investors have filed 24 disclosed large-shareholding filings in Disco Corporation (6146), most recently on 2025-09-19. 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 Disco Corporation have?: Disco Corporation has 24 buy-side and 24 sell-side disclosures on record, covering ¥481.3B ($3.1B) in total reported value, spanning 2021-09-17 to 2025-09-19.
Where does StockDrifts get Disco 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 Disco Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.