Who has been buying Torishima Pump Mfg. Co., Ltd. stock?

8 distinct investors have filed 18 disclosed large-shareholding filings in Torishima Pump Mfg. Co., Ltd. (6363), most recently on 2025-10-07. 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 Torishima Pump Mfg. Co., Ltd. have?

Torishima Pump Mfg. Co., Ltd. has 18 buy-side and 8 sell-side disclosures on record, covering ¥8.9B ($57.4M) in total reported value, spanning 2022-07-22 to 2025-10-07.

Where does StockDrifts get Torishima Pump Mfg. 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.

Torishima Pump Mfg. Co., Ltd. 6363

Company

株式会社酉島製作所Torishima Pump Mfg. Co., Ltd.

Investors

Buys

Total Value

¥8.9B ($57.4M)

Avg Return

+48.71%

Last Filing

2025-10-07

Torishima Pump Mfg. Co., Ltd. (6363) has 18 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥8.9B ($57.4M) in reported transaction value. The earliest filing StockDrifts holds for Torishima Pump Mfg. Co., Ltd. is dated 2022-07-22; the most recent is 2025-10-07. 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 +48.71%, 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
2025-10-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.2M	¥2,104	+50.9%	¥24M ($158K)
2025-10-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	36.6K	¥2,104	-50.9%	¥911M ($5.9M)
2025-09-02	SELL	unknown	いちよしアセットマネジメント株式会社 Ichiyoshi Asset Management Co., Ltd.	other	1.2M	¥2,015	-57.6%	¥591M ($3.8M)
2025-04-22	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	529.7K	¥1,873	+69.5%	¥560M ($3.6M)
2025-04-22	SELL	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	965.4K	¥1,873	-69.5%	¥501M ($3.2M)
2025-04-18	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.2M	¥1,875	+69.3%	¥2.2B ($14.0M)
2025-04-18	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	471.5K	¥1,875	+69.3%	¥884M ($5.7M)
2025-04-03	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.1M	¥1,906	+66.6%	¥205M ($1.3M)
2025-04-03	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	5.4K	¥1,906	+66.6%	¥33M ($214K)
2025-04-03	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	37.6K	¥1,906	-66.6%	¥797M ($5.1M)
2025-01-07	BUY	unknown	いちよしアセットマネジメント株式会社 Ichiyoshi Asset Management Co., Ltd.	other	1.5M	¥2,342	+35.6%	¥3.4B ($22.3M)
2024-10-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥2,837	+11.9%	¥2.9B ($18.6M)
2024-10-22	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-11.0K	¥2,837	+11.9%	-
2024-10-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	455.8K	¥2,837	+11.9%	¥1.3B ($8.3M)
2024-10-04	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥2,662	+19.3%	¥193M ($1.2M)
2024-10-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.0K	¥2,662	-19.3%	¥23M ($150K)
2024-10-04	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	35.7K	¥2,662	-19.3%	¥1.3B ($8.4M)
2024-05-09	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	7.4K	¥2,980	+6.5%	¥22M ($143K)
2024-05-09	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	525.9K	¥2,980	+6.5%	¥1.6B ($10.1M)
2024-05-09	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	941.2K	¥2,980	+6.5%	¥2.8B ($18.1M)
2024-04-05	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	919.7K	¥2,661	-19.3%	¥108M ($698K)
2024-04-05	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	6.5K	¥2,661	+19.3%	¥17M ($112K)
2024-04-05	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	38.8K	¥2,661	-19.3%	¥1.2B ($7.8M)
2023-11-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	491.2K	¥2,099	+51.3%	¥1.0B ($6.7M)
2023-11-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	961.7K	¥2,099	+51.3%	¥2.0B ($13.0M)
2022-07-22	BUY	Market Buy	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	513.0K	¥1,346	+135.9%	¥415M ($2.7M)
2022-07-22	BUY	Market Buy	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.3M	¥1,346	+135.9%	¥24M ($152K)

Frequently asked questions

Who has been buying Torishima Pump Mfg. Co., Ltd. stock?: 8 distinct investors have filed 18 disclosed large-shareholding filings in Torishima Pump Mfg. Co., Ltd. (6363), most recently on 2025-10-07. 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 Torishima Pump Mfg. Co., Ltd. have?: Torishima Pump Mfg. Co., Ltd. has 18 buy-side and 8 sell-side disclosures on record, covering ¥8.9B ($57.4M) in total reported value, spanning 2022-07-22 to 2025-10-07.
Where does StockDrifts get Torishima Pump Mfg. 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 Torishima Pump Mfg. Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.