Who has been buying Nippon Pillar Packing Co., Ltd. stock?

20 distinct investors have filed 39 disclosed large-shareholding filings in Nippon Pillar Packing Co., Ltd. (6490), most recently on 2026-04-21. 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 Nippon Pillar Packing Co., Ltd. have?

Nippon Pillar Packing Co., Ltd. has 39 buy-side and 29 sell-side disclosures on record, covering ¥20.7B ($133.3M) in total reported value, spanning 2021-03-19 to 2026-04-21.

Where does StockDrifts get Nippon Pillar Packing 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.

Nippon Pillar Packing Co., Ltd. 6490

Company

株式会社PILLARNippon Pillar Packing Co., Ltd.

Investors

Buys

Total Value

¥20.7B ($133.3M)

Avg Return

+201.48%

Last Filing

2026-04-21

Nippon Pillar Packing Co., Ltd. (6490) has 39 disclosed large-shareholding filings and 29 disclosed disposals on record, filed by 20 distinct investors. Together those filings cover ¥20.7B ($133.3M) in reported transaction value. The earliest filing StockDrifts holds for Nippon Pillar Packing Co., Ltd. is dated 2021-03-19; the most recent is 2026-04-21. 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 +201.48%, 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
2026-04-21	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	671.5K	¥8,830	-16.4%	¥1.3B ($8.4M)
2026-04-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	512.9K	¥8,830	-16.4%	¥796M ($5.1M)
2026-04-21	SELL	negotiated	三井住友信託銀行株式会社	strategic	142.0K	¥8,830	-16.4%	¥619M ($4.0M)
2026-04-07	BUY	unknown	株式会社みずほ銀行	strategic	592.6K	¥7,590	+16.5%	¥4.5B ($29.0M)
2026-04-07	BUY	unknown	アセットマネジメントOne株式会社	other	363.7K	¥7,590	+16.5%	¥2.8B ($17.8M)
2026-04-07	BUY	unknown	みずほ信託銀行株式会社	other	274.2K	¥7,590	+16.5%	¥2.1B ($13.4M)
2026-04-07	BUY	unknown	みずほ証券株式会社	other	28.1K	¥7,590	+16.5%	¥213M ($1.4M)
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	818.2K	¥4,120	+112.4%	¥485M ($3.1M)
2025-09-19	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	602.3K	¥4,120	-112.4%	¥268M ($1.7M)
2025-09-19	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	212.0K	¥4,120	+112.4%	¥873M ($5.6M)
2025-04-21	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	702.1K	¥3,320	+163.6%	¥682M ($4.4M)
2025-04-21	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	212.0K	¥3,320	+163.6%	¥704M ($4.5M)
2025-04-21	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	668.4K	¥3,320	+163.6%	¥158M ($1.0M)
2024-11-08	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	602.4K	¥4,445	-96.8%	¥1.2B ($7.8M)
2024-11-08	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	592.6K	¥4,445	+96.8%	¥2.6B ($17.0M)
2024-07-05	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	241.2K	¥5,510	-58.8%	¥1.8B ($11.6M)
2024-07-05	SELL	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	25.0K	¥5,510	-58.8%	¥14M ($89K)
2024-07-05	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	692.5K	¥5,510	+58.8%	¥3.8B ($24.6M)
2024-06-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	494.7K	¥5,200	+68.3%	¥2.6B ($16.6M)
2024-06-06	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	621.3K	¥5,200	+68.3%	¥3.2B ($20.8M)
2024-06-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	212.0K	¥5,200	+68.3%	¥1.1B ($7.1M)
2024-03-25	SELL	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	27.8K	¥5,920	-47.8%	¥326M ($2.1M)
2024-03-25	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	566.9K	¥5,920	-47.8%	¥1.5B ($9.5M)
2024-03-25	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	692.5K	¥5,920	+47.8%	¥4.1B ($26.4M)
2023-10-06	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	592.6K	¥3,805	+130.0%	¥2.3B ($14.5M)
2023-10-06	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	875.9K	¥3,805	-130.0%	¥1.6B ($10.6M)
2023-08-07	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	428.8K	¥4,280	-104.4%	¥429M ($2.8M)
2023-08-07	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	502.6K	¥4,280	-104.4%	¥782M ($5.0M)
2023-08-07	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	39.2K	¥4,280	+104.4%	¥168M ($1.1M)
2023-07-28	BUY	unknown	日本ピラー工業取引先持株会理事長前嶋伸昭 Nippon Pillar Packing Co.,Ltd.client stock holding group	strategic	1.3M	¥4,395	+99.1%	¥5.6B ($35.8M)
2023-07-28	BUY	unknown	日本ピラー工業取引先持株会理事長前嶋伸昭 Nippon Pillar Packing Co.,Ltd.client stock holding group	strategic	1.3M	¥4,395	+99.1%	¥5.6B ($35.8M)
2023-07-07	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	83.5K	¥4,450	+96.6%	¥372M ($2.4M)
2023-07-07	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	692.5K	¥4,450	+96.6%	¥3.1B ($19.9M)
2023-07-07	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	814.5K	¥4,450	-96.6%	¥1.2B ($8.1M)
2023-04-20	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	307.4K	¥3,610	-142.4%	¥108M ($700K)
2023-04-20	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	634.8K	¥3,610	-142.4%	¥353M ($2.3M)
2023-04-20	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	212.0K	¥3,610	+142.4%	¥765M ($4.9M)
2022-11-08	SELL	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	82.1K	¥2,546	-243.7%	¥312M ($2.0M)
2022-11-08	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	692.5K	¥2,546	+243.7%	¥1.8B ($11.4M)
2022-11-08	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.1M	¥2,546	+243.7%	¥689M ($4.4M)
2022-08-05	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	592.6K	¥2,764	+216.6%	¥1.6B ($10.6M)
2022-08-05	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.3M	¥2,764	+216.6%	¥720M ($4.6M)
2022-06-22	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	205.1K	¥2,706	+223.4%	¥7M ($44K)
2022-06-22	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	692.5K	¥2,706	+223.4%	¥1.9B ($12.1M)
2022-06-22	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	823.1K	¥2,706	-223.4%	¥745M ($4.8M)
2022-05-11	SELL	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.1M	¥2,460	-255.7%	¥339M ($2.2M)
2022-05-11	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	692.5K	¥2,460	+255.7%	¥1.7B ($11.0M)
2022-05-11	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	203.6K	¥2,460	-255.7%	¥511M ($3.3M)
2022-05-10	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	338.6K	¥2,442	-258.3%	¥630M ($4.1M)
2022-05-10	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	731.8K	¥2,442	+258.3%	¥324M ($2.1M)

Showing the 50 most recent of 100 filings.

Frequently asked questions

Who has been buying Nippon Pillar Packing Co., Ltd. stock?: 20 distinct investors have filed 39 disclosed large-shareholding filings in Nippon Pillar Packing Co., Ltd. (6490), most recently on 2026-04-21. 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 Nippon Pillar Packing Co., Ltd. have?: Nippon Pillar Packing Co., Ltd. has 39 buy-side and 29 sell-side disclosures on record, covering ¥20.7B ($133.3M) in total reported value, spanning 2021-03-19 to 2026-04-21.
Where does StockDrifts get Nippon Pillar Packing 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 Nippon Pillar Packing Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.