Who has been buying Nakamoto Packs Co.,Ltd. stock?

12 distinct investors have filed 11 disclosed large-shareholding filings in Nakamoto Packs Co.,Ltd. (7811), 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 Nakamoto Packs Co.,Ltd. have?

Nakamoto Packs Co.,Ltd. has 11 buy-side and 9 sell-side disclosures on record, covering ¥2.9B ($19.0M) in total reported value, spanning 2021-03-22 to 2026-05-13.

Where does StockDrifts get Nakamoto Packs 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.

Nakamoto Packs Co.,Ltd. 7811

Company

中本パックス株式会社Nakamoto Packs Co.,Ltd.

Investors

Buys

Total Value

¥2.9B ($19.0M)

Avg Return

+16.98%

Last Filing

2026-05-13

Nakamoto Packs Co.,Ltd. (7811) has 11 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥2.9B ($19.0M) in reported transaction value. The earliest filing StockDrifts holds for Nakamoto Packs Co.,Ltd. is dated 2021-03-22; 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 +16.98%, 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
2026-05-13	SELL	unknown	中本由理子	strategic	94.8K	¥1,950	+3.7%	¥17M ($112K)
2026-05-13	SELL	unknown	中本髙志	strategic	5.1K	¥1,950	+3.7%	¥256M ($1.6M)
2026-05-13	SELL	Market Buy	株式会社中本	passive	713.7K	¥1,950	+3.7%	¥127M ($819K)
2026-04-20	BUY	Market Buy	株式会社SBI証券	other	77.2K	¥1,940	-1.6%	¥28M ($179K)
2026-04-20	SELL	Market Buy	SBIアセットマネジメント株式会社	passive	250.0K	¥1,940	+1.6%	¥273M ($1.8M)
2023-11-08	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	58.0K	¥1,623	+19.5%	¥94M ($607K)
2023-11-08	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	358.0K	¥1,623	+19.5%	¥581M ($3.7M)
2022-04-08	BUY	Market Buy	中本由理子 Yuriko Nakamoto	strategic	94.8K	¥1,599	+21.3%	¥7M ($42K)
2022-04-08	SELL	Market Buy	中本髙志 Takashi Nakamoto	strategic	125.1K	¥1,599	-21.3%	¥192M ($1.2M)
2022-04-08	BUY	Market Buy	株式会社中本 Nakamoto Co.,Ltd.	passive	713.7K	¥1,599	+21.3%	¥128M ($826K)
2022-03-16	BUY	unknown	染谷真沙美 Masami Someya	strategic	398.3K	¥1,529	+26.9%	¥114M ($734K)
2022-03-16	SELL	unknown	染谷真沙美 Masami Someya	strategic	398.3K	¥1,529	-26.9%	¥114M ($734K)
2022-02-07	BUY	unknown	河田淳 Jun Kawata	activist	109.6K	¥1,732	+12.0%	¥69M ($448K)
2022-02-07	SELL	unknown	河田優子 Yuko Kawata	strategic	294.6K	¥1,732	-12.0%	¥181M ($1.2M)
2021-11-18	BUY	unknown	染谷匡 Tadashi Someya	strategic	8.2K	¥1,684	+15.2%	¥14M ($89K)
2021-11-18	BUY	unknown	染谷匡 Tadashi Someya	strategic	8.2K	¥1,684	+15.2%	¥14M ($89K)
2021-11-18	BUY	unknown	染谷真沙美 Masami Someya	strategic	368.3K	¥1,684	+15.2%	¥613M ($4.0M)
2021-11-18	BUY	unknown	染谷真沙美 Masami Someya	strategic	368.3K	¥1,684	+15.2%	¥613M ($4.0M)
2021-11-18	BUY	unknown	染谷真沙美 Masami Someya	strategic	368.3K	¥1,684	+15.2%	¥613M ($4.0M)
2021-11-09	BUY	unknown	松下美樹 Miki Matsushita	strategic	328.8K	¥1,724	+12.5%	¥147M ($945K)
2021-11-09	BUY	unknown	松下美樹 Miki Matsushita	strategic	328.8K	¥1,724	+12.5%	¥147M ($945K)
2021-05-20	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	358.8K	¥1,586	-22.3%	¥149M ($962K)
2021-03-22	BUY	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	452.6K	¥1,420.267	+36.6%	¥636M ($4.1M)
2021-03-22	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	6.4K	¥1,420.267	-36.6%	¥289M ($1.9M)

Frequently asked questions

Who has been buying Nakamoto Packs Co.,Ltd. stock?: 12 distinct investors have filed 11 disclosed large-shareholding filings in Nakamoto Packs Co.,Ltd. (7811), 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 Nakamoto Packs Co.,Ltd. have?: Nakamoto Packs Co.,Ltd. has 11 buy-side and 9 sell-side disclosures on record, covering ¥2.9B ($19.0M) in total reported value, spanning 2021-03-22 to 2026-05-13.
Where does StockDrifts get Nakamoto Packs 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 Nakamoto Packs Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.