Who has been buying Soda Nikka Co., Ltd. stock?

6 distinct investors have filed 8 disclosed large-shareholding filings in Soda Nikka Co., Ltd. (8158), most recently on 2025-05-09. 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 Soda Nikka Co., Ltd. have?

Soda Nikka Co., Ltd. has 8 buy-side and 6 sell-side disclosures on record, covering ¥1.6B ($10.5M) in total reported value, spanning 2021-03-22 to 2025-05-09.

Where does StockDrifts get Soda Nikka 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.

Soda Nikka Co., Ltd. 8158

Company

ソーダニッカ株式会社Soda Nikka Co., Ltd.

Investors

Buys

Total Value

¥1.6B ($10.5M)

Avg Return

+56.90%

Last Filing

2025-05-09

Soda Nikka Co., Ltd. (8158) has 8 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.6B ($10.5M) in reported transaction value. The earliest filing StockDrifts holds for Soda Nikka Co., Ltd. is dated 2021-03-22; the most recent is 2025-05-09. 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 +56.90%, 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
2025-05-09	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	410.0K	¥1,042	-1.0%	¥427M ($2.8M)
2025-05-09	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	61.8K	¥1,042	+1.0%	¥804M ($5.2M)
2025-02-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	410.0K	¥1,149	-10.2%	¥471M ($3.0M)
2025-02-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	834.5K	¥1,149	-10.2%	¥959M ($6.2M)
2022-04-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	550.0K	¥668	+54.5%	¥367M ($2.4M)
2022-04-22	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	196.9K	¥668	-54.5%	¥303M ($2.0M)
2022-03-23	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	550.0K	¥668	+54.5%	¥367M ($2.4M)
2022-03-23	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	649.8K	¥668	+54.5%	¥434M ($2.8M)
2021-08-20	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	449.8K	¥544	+89.7%	¥3M ($18K)
2021-08-20	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	620.1K	¥544	-89.7%	¥138M ($892K)
2021-08-19	BUY	negotiated	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	290.0K	¥538	+91.8%	¥96M ($620K)
2021-08-19	BUY	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	902.4K	¥538	+91.8%	¥480M ($3.1M)
2021-07-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	444.7K	¥550	-87.6%	¥44M ($286K)
2021-07-07	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	873.1K	¥550	-87.6%	¥120M ($777K)
2021-05-12	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	1.1M	¥608	+69.7%	¥669M ($4.3M)
2021-05-12	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	16.3K	¥608	-69.7%	¥474M ($3.1M)
2021-03-22	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	1.1M	¥534.084	+93.2%	¥588M ($3.8M)
2021-03-22	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	794.2K	¥534.084	+93.2%	¥311M ($2.0M)

Frequently asked questions

Who has been buying Soda Nikka Co., Ltd. stock?: 6 distinct investors have filed 8 disclosed large-shareholding filings in Soda Nikka Co., Ltd. (8158), most recently on 2025-05-09. 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 Soda Nikka Co., Ltd. have?: Soda Nikka Co., Ltd. has 8 buy-side and 6 sell-side disclosures on record, covering ¥1.6B ($10.5M) in total reported value, spanning 2021-03-22 to 2025-05-09.
Where does StockDrifts get Soda Nikka 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 Soda Nikka Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.