Who has been buying NPC Incorporated stock?

11 distinct investors have filed 21 disclosed large-shareholding filings in NPC Incorporated (6255), 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 NPC Incorporated have?

NPC Incorporated has 21 buy-side and 8 sell-side disclosures on record, covering ¥8.4B ($54.2M) in total reported value, spanning 2021-03-22 to 2026-04-07.

Where does StockDrifts get NPC Incorporated 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.

NPC Incorporated 6255

Company

株式会社エヌ・ピー・シーNPC Incorporated

Investors

Buys

Total Value

¥8.4B ($54.2M)

Avg Return

+6.10%

Last Filing

2026-04-07

NPC Incorporated (6255) has 21 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥8.4B ($54.2M) in reported transaction value. The earliest filing StockDrifts holds for NPC Incorporated is dated 2021-03-22; the most recent is 2026-04-07. 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 +6.10%, 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	株式会社三井住友銀行	other	0	¥611	-18.7%	¥108M ($695K)
2026-07-23	BUY	Market Buy	三井住友DSアセットマネジメント株式会社	passive	1.8M	¥611	+18.7%	¥147M ($948K)
2026-04-07	BUY	Market Buy	株式会社三井住友銀行	other	176.2K	¥785	-3.8%	¥54M ($346K)
2026-04-07	BUY	Market Buy	三井住友DSアセットマネジメント株式会社	passive	1.6M	¥785	-3.8%	¥145M ($938K)
2026-03-23	BUY	unknown	株式会社三井住友銀行	other	108.8K	¥720	-16.7%	¥91M ($590K)
2026-03-23	BUY	unknown	三井住友DSアセットマネジメント株式会社	passive	1.4M	¥720	+16.7%	¥1.2B ($7.6M)
2026-03-05	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	¥765	+9.8%	¥867M ($5.6M)
2025-10-17	BUY	Market Buy	リム・アドバイザーズ・リミテッド(LIM Advisors Limited) LIM Advisors Limited	activist	1.3M	¥652	+28.8%	¥863M ($5.6M)
2025-07-23	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	344.7K	¥638	+31.7%	¥6M ($36K)
2025-07-23	SELL	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	750.0K	¥638	-31.7%	¥204M ($1.3M)
2025-07-07	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	336.2K	¥675	-24.4%	¥1M ($10K)
2025-07-07	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	1.1M	¥675	+24.4%	¥722M ($4.7M)
2025-03-07	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	337.5K	¥888	+5.4%	¥4M ($25K)
2025-03-07	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	1.1M	¥888	-5.4%	¥221M ($1.4M)
2025-02-07	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	820.0K	¥925	-9.2%	¥759M ($4.9M)
2025-02-07	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	342.1K	¥925	-9.2%	¥316M ($2.0M)
2024-08-07	BUY	unknown	バークレイズ証券株式会社 Barclays Securities Co., Ltd.	other	0	¥834	+0.7%	-
2024-08-07	BUY	unknown	バークレイズ・バンク・ピーエルシー Barclays Bank PLC	other	10.1K	¥834	+0.7%	¥9M ($59K)
2024-08-07	BUY	unknown	バークレイズ・キャピタル・セキュリティーズ・リミテッド Barclays Capital Securities Ltd.	other	72.8K	¥834	+0.7%	¥50M ($323K)
2024-07-22	BUY	unknown	バークレイズ証券株式会社 Barclays Securities Co., Ltd.	other	0	¥1,099	-23.6%	-
2024-07-22	BUY	unknown	バークレイズ・バンク・ピーエルシー Barclays Bank PLC	other	0	¥1,099	-23.6%	-
2024-07-22	BUY	unknown	バークレイズ・キャピタル・セキュリティーズ・リミテッド Barclays Capital Securities Ltd.	other	1.3M	¥1,099	-23.6%	¥1.4B ($9.1M)
2023-09-26	SELL	unknown	隣良郎 YOSHIROH CHIKAKI	other	1.0M	¥674	-24.6%	¥150M ($969K)
2021-11-08	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	63.2K	¥640	-31.3%	¥8M ($55K)
2021-11-08	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	315.6K	¥640	+31.3%	¥195M ($1.3M)
2021-10-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	77.1K	¥683	+23.0%	¥53M ($340K)
2021-10-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.0M	¥683	+23.0%	¥694M ($4.5M)
2021-10-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.4M	¥672	-25.0%	¥181M ($1.2M)
2021-09-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.6M	¥735	+14.3%	¥1.2B ($7.6M)
2021-09-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	12.1K	¥735	+14.3%	¥788M ($5.1M)
2021-06-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.9M	¥783	+7.3%	¥197M ($1.3M)
2021-06-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	31.3K	¥783	-7.3%	¥2M ($11K)
2021-05-12	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.7M	¥653	+28.6%	¥240M ($1.6M)
2021-05-12	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	32.0K	¥653	+28.6%	¥21M ($135K)
2021-03-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	16.7K	¥682.674	-23.1%	¥24M ($155K)
2021-03-22	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	¥682.674	+23.1%	¥876M ($5.7M)

Frequently asked questions

Who has been buying NPC Incorporated stock?: 11 distinct investors have filed 21 disclosed large-shareholding filings in NPC Incorporated (6255), 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 NPC Incorporated have?: NPC Incorporated has 21 buy-side and 8 sell-side disclosures on record, covering ¥8.4B ($54.2M) in total reported value, spanning 2021-03-22 to 2026-04-07.
Where does StockDrifts get NPC Incorporated 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 NPC Incorporated. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.