Who has been buying Daio Paper Corporation stock?

6 distinct investors have filed 7 disclosed large-shareholding filings in Daio Paper Corporation (3880), most recently on 2026-03-26. 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 Daio Paper Corporation have?

Daio Paper Corporation has 7 buy-side and 6 sell-side disclosures on record, covering ¥6.3B ($40.9M) in total reported value, spanning 2022-02-09 to 2026-03-26.

Where does StockDrifts get Daio Paper 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.

Daio Paper Corporation 3880

Company

大王製紙株式会社Daio Paper Corporation

Investors

Buys

Total Value

¥6.3B ($40.9M)

Avg Return

-21.89%

Last Filing

2026-03-26

Daio Paper Corporation (3880) has 7 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥6.3B ($40.9M) in reported transaction value. The earliest filing StockDrifts holds for Daio Paper Corporation is dated 2022-02-09; the most recent is 2026-03-26. 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 -21.89%, 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
2026-06-22	BUY	Market Buy	大王海運株式会社 DAIO KAIUN CO., LTD.	strategic	11.2M	¥911	+5.7%	¥1.5B ($9.7M)
2026-03-26	BUY	negotiated	北越紙販売株式会社	strategic	10.0K	¥1,032	+2.5%	¥10M ($65K)
2026-03-26	SELL	negotiated	北越コーポレーション株式会社	strategic	30.6M	¥1,032	+2.5%	¥30.8B ($198.5M)
2024-07-04	BUY	Market Buy	北越紙販売株式会社 Hokuetsu Paper Sales Co., Ltd.	other	10.0K	¥901.2	+11.6%	¥9M ($58K)
2024-07-04	BUY	Market Buy	北越コーポレーション株式会社 Hokuetsu Corporation	other	41.6M	¥901.2	+11.6%	¥1.4B ($8.8M)
2023-12-14	SELL	negotiated	川崎紙運輸株式会社 Kawasaki Paper Transportation Co., Ltd.	strategic	0	¥1,099.5	+8.5%	¥279M ($1.8M)
2023-12-14	SELL	negotiated	共立物流株式会社 Kyoritsu Logistics Co., Ltd.	strategic	0	¥1,099.5	+8.5%	¥1.2B ($7.7M)
2023-12-14	SELL	Market Buy	川崎紙運輸株式会社 Kawasaki Paper Transportation Co., Ltd.	strategic	0	¥1,099.5	+8.5%	¥279M ($1.8M)
2023-12-14	BUY	Market Buy	大王海運株式会社 DAIO KAIUN CO.,LTD.	strategic	8.8M	¥1,099.5	-8.5%	¥1.9B ($12.0M)
2023-12-14	SELL	Market Buy	共立物流株式会社 Kyoritsu Logistics Co., Ltd.	strategic	0	¥1,099.5	+8.5%	¥1.2B ($7.7M)
2023-12-14	BUY	Market Buy	大王海運株式会社 DAIO KAIUN CO., LTD.	strategic	9.5M	¥1,099.5	-8.5%	¥762M ($4.9M)
2023-12-14	BUY	negotiated	大王海運株式会社 DAIO KAIUN CO.,LTD.	strategic	8.8M	¥1,099.5	-8.5%	¥1.9B ($12.0M)
2022-11-22	SELL	Market Buy	ティー・ロウ・プライス・ジャパン株式会社 T. Rowe Price Japan, Inc.	passive	7.5M	¥1,103	+8.8%	¥2.8B ($18.0M)
2022-02-09	BUY	negotiated	川崎紙運輸株式会社 Kawasaki Paper Transportation Co., Ltd.	strategic	260.0K	¥1,879	-46.5%	¥489M ($3.2M)
2022-02-09	BUY	negotiated	共立物流株式会社 Kyoritsu Logistics Co., Ltd.	strategic	1.1M	¥1,879	-46.5%	¥2.0B ($13.1M)
2022-02-09	BUY	negotiated	大王海運株式会社 DAIO KAIUN CO.,LTD.	strategic	7.1M	¥1,879	-46.5%	¥13.4B ($86.2M)

Frequently asked questions

Who has been buying Daio Paper Corporation stock?: 6 distinct investors have filed 7 disclosed large-shareholding filings in Daio Paper Corporation (3880), most recently on 2026-03-26. 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 Daio Paper Corporation have?: Daio Paper Corporation has 7 buy-side and 6 sell-side disclosures on record, covering ¥6.3B ($40.9M) in total reported value, spanning 2022-02-09 to 2026-03-26.
Where does StockDrifts get Daio Paper 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 Daio Paper Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.