Who has been buying Central Glass Co., Ltd. stock?

11 distinct investors have filed 29 disclosed large-shareholding filings in Central Glass Co., Ltd. (4044), most recently on 2026-04-07. 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 Central Glass Co., Ltd. have?

Central Glass Co., Ltd. has 29 buy-side and 28 sell-side disclosures on record, covering ¥23.6B ($152.3M) in total reported value, spanning 2021-06-17 to 2026-04-07.

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.

Central Glass Co., Ltd. 4044

Company

セントラル硝子株式会社Central Glass Co., Ltd.

Investors

Buys

Total Value

¥23.6B ($152.3M)

Avg Return

+51.20%

Last Filing

2026-04-07

Central Glass Co., Ltd. (4044) has 29 disclosed large-shareholding filings and 28 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥23.6B ($152.3M) in reported transaction value. The earliest filing StockDrifts holds for Central Glass Co., Ltd. is dated 2021-06-17; the most recent is 2026-04-07. Across these filings the average return since disclosure is +51.20%, 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
2026-04-07	SELL	unknown	株式会社みずほ銀行	unknown	0	¥4,220	-9.8%	¥2.1B ($13.6M)
2026-04-07	SELL	unknown	みずほ証券株式会社	other	60.0K	¥4,220	-9.8%	¥11M ($71K)
2026-04-07	SELL	unknown	アセットマネジメントOne株式会社	other	986.7K	¥4,220	-9.8%	¥33M ($212K)
2025-10-07	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	other	500.0K	¥3,330	-	-
2025-10-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	61.7K	¥3,330	+39.2%	¥61M ($391K)
2025-10-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	994.9K	¥3,330	+39.2%	¥554M ($3.6M)
2025-09-19	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	other	378.0K	¥3,380	-37.1%	¥589M ($3.8M)
2025-09-19	BUY	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	750.0K	¥3,380	+37.1%	¥211M ($1.4M)
2025-09-19	BUY	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	366.3K	¥3,380	+37.1%	¥202M ($1.3M)
2025-04-22	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	other	500.0K	¥2,833	-63.6%	¥1.4B ($9.2M)
2025-04-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	43.9K	¥2,833	-63.6%	¥44M ($285K)
2025-04-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	828.6K	¥2,833	+63.6%	¥74M ($475K)
2025-04-07	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	other	1.0M	¥2,665	-	-
2025-04-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	60.6K	¥2,665	-	-
2025-04-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	802.3K	¥2,665	+73.9%	¥166M ($1.1M)
2024-10-07	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	other	1.0M	¥3,510	-	-
2024-10-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	59.2K	¥3,510	-	¥208M ($1.3M)
2024-10-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	739.8K	¥3,510	+32.0%	¥374M ($2.4M)
2024-03-06	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	307.1K	¥2,884	-	-
2024-03-06	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	other	551.2K	¥2,884	-60.7%	¥225M ($1.5M)
2024-03-06	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	686.9K	¥2,884	-60.7%	¥210M ($1.4M)
2024-01-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	630.0K	¥2,738	-	-
2024-01-19	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	758.4K	¥2,738	-69.3%	¥406M ($2.6M)
2024-01-19	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	306.5K	¥2,738	-69.3%	¥384M ($2.5M)
2023-11-22	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	other	1.0M	¥2,705	-71.3%	¥619M ($4.0M)
2023-11-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	25.6K	¥2,705	-71.3%	¥14M ($91K)
2023-11-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	635.6K	¥2,705	-71.3%	¥21M ($136K)
2023-11-08	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥2,606	-	-
2023-11-08	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	31.2K	¥2,606	-	¥81M ($525K)
2023-11-08	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	641.5K	¥2,606	+77.9%	¥41M ($262K)
2023-06-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥3,090	+50.0%	¥3.8B ($24.5M)
2023-06-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	625.3K	¥3,090	+50.0%	¥1.9B ($12.5M)
2023-06-06	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	630.0K	¥3,115	+48.8%	¥769M ($5.0M)
2023-06-06	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	907.8K	¥3,115	+48.8%	¥510M ($3.3M)
2023-06-06	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	447.3K	¥3,115	+48.8%	¥551M ($3.6M)
2023-04-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	630.0K	¥2,841	+63.1%	¥1.8B ($11.5M)
2023-04-06	BUY	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	1.2M	¥2,841	+63.1%	¥3.5B ($22.5M)
2023-04-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	445.2K	¥2,841	+63.1%	¥1.3B ($8.2M)
2023-02-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	630.0K	¥2,953	-	-
2023-02-21	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	981.6K	¥2,953	-57.0%	¥178M ($1.1M)
2023-02-21	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	445.2K	¥2,953	-57.0%	¥152M ($983K)
2022-12-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥3,445	-	-
2022-12-07	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	strategic	86.0K	¥3,445	-34.5%	¥266M ($1.7M)
2022-12-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	190.8K	¥3,445	-34.5%	¥1.9B ($12.5M)
2022-11-29	SELL	unknown	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	unknown	0	¥3,585	-29.3%	¥14.3B ($92.3M)
2022-11-29	SELL	unknown	株式会社エスグラントコーポレーション S-Grant Corporation Co., Ltd.	unknown	0	¥3,585	-29.3%	¥14.2B ($91.6M)
2022-11-29	SELL	unknown	株式会社南青山不動産 Minami Aoyama Real Estate Co., Ltd.	unknown	0	¥3,585	-29.3%	¥13.9B ($89.9M)
2022-11-29	SELL	unknown	株式会社レノ Reno Inc. (Murakami-linked)	unknown	0	¥3,585	-29.3%	¥77.0B ($497.0M)
2022-11-22	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥3,640	-27.3%	¥2.8B ($18.4M)
2022-11-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	strategic	162.2K	¥3,640	+27.3%	¥329M ($2.1M)

Showing the 50 most recent of 89 filings.

Frequently asked questions

Who has been buying Central Glass Co., Ltd. stock?: 11 distinct investors have filed 29 disclosed large-shareholding filings in Central Glass Co., Ltd. (4044), most recently on 2026-04-07. 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 Central Glass Co., Ltd. have?: Central Glass Co., Ltd. has 29 buy-side and 28 sell-side disclosures on record, covering ¥23.6B ($152.3M) in total reported value, spanning 2021-06-17 to 2026-04-07.
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.