Who has been buying Quest Co., Ltd. stock?

6 distinct investors have filed 5 disclosed large-shareholding filings in Quest Co., Ltd. (2332), most recently on 2024-06-11. 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 Quest Co., Ltd. have?

Quest Co., Ltd. has 5 buy-side and 8 sell-side disclosures on record, covering ¥1.4B ($9.2M) in total reported value, spanning 2023-07-28 to 2024-06-11.

Where does StockDrifts get Quest 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.

Quest Co., Ltd. 2332

Company

株式会社クエストQuest Co., Ltd.

Investors

Buys

Total Value

¥1.4B ($9.2M)

Avg Return

+38.12%

Last Filing

2024-06-11

Quest Co., Ltd. (2332) has 5 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.4B ($9.2M) in reported transaction value. The earliest filing StockDrifts holds for Quest Co., Ltd. is dated 2023-07-28; the most recent is 2024-06-11. 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 +38.12%, 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
2026-07-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	275.1K	¥1,616	+3.7%	¥445M ($2.9M)
2024-06-11	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	0	¥1,363	-28.3%	¥25M ($164K)
2024-06-11	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,363	+28.3%	¥204M ($1.3M)
2024-06-11	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,363	+28.3%	¥204M ($1.3M)
2024-06-11	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,363	+28.3%	¥1.1B ($7.4M)
2024-05-17	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	18.5K	¥1,249	-40.0%	¥75M ($486K)
2024-05-17	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,249	+40.0%	¥187M ($1.2M)
2024-05-17	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,249	+40.0%	¥187M ($1.2M)
2024-05-17	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,249	+40.0%	¥1.0B ($6.7M)
2024-04-05	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,234	+41.6%	¥185M ($1.2M)
2024-04-05	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	79.2K	¥1,234	-41.6%	¥70M ($450K)
2024-04-05	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,234	+41.6%	¥185M ($1.2M)
2024-04-05	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,234	+41.6%	¥1.0B ($6.7M)
2024-03-04	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	135.3K	¥1,240	-41.0%	¥70M ($452K)
2024-03-04	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,240	+41.0%	¥186M ($1.2M)
2024-03-04	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,240	+41.0%	¥186M ($1.2M)
2024-03-04	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,240	+41.0%	¥1.0B ($6.7M)
2024-02-21	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	154.2K	¥1,223	+42.9%	¥186M ($1.2M)
2024-02-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	55.7K	¥1,223	+42.9%	¥68M ($439K)
2024-02-05	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,233	+41.8%	¥185M ($1.2M)
2024-02-05	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,233	+41.8%	¥1.0B ($6.7M)
2024-02-05	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	192.3K	¥1,233	-41.8%	¥69M ($445K)
2024-02-05	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,233	+41.8%	¥185M ($1.2M)
2023-12-06	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	237.8K	¥1,200	+45.7%	¥281M ($1.8M)
2023-12-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	55.7K	¥1,200	+45.7%	¥67M ($431K)
2023-11-22	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,215	+43.9%	¥1.0B ($6.6M)
2023-11-22	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	248.0K	¥1,215	-43.9%	¥104M ($671K)
2023-11-22	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,215	+43.9%	¥182M ($1.2M)
2023-11-22	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,215	+43.9%	¥182M ($1.2M)
2023-09-22	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	327.0K	¥1,244	+40.5%	¥402M ($2.6M)
2023-09-22	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	55.7K	¥1,244	+40.5%	¥69M ($447K)
2023-09-21	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	333.7K	¥1,230	-42.1%	¥68M ($440K)
2023-09-21	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,230	+42.1%	¥185M ($1.2M)
2023-09-21	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,230	+42.1%	¥185M ($1.2M)
2023-09-21	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,230	+42.1%	¥1.0B ($6.6M)
2023-08-16	SELL	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	388.9K	¥1,263	-38.4%	¥72M ($465K)
2023-08-16	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,263	+38.4%	¥189M ($1.2M)
2023-08-16	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,263	+38.4%	¥189M ($1.2M)
2023-08-16	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,263	+38.4%	¥1.1B ($6.8M)
2023-08-04	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	415.8K	¥1,337	+30.7%	¥556M ($3.6M)
2023-08-04	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	55.7K	¥1,337	+30.7%	¥74M ($480K)
2023-07-28	BUY	unknown	内田マサ子 Masako Uchida	strategic	150.0K	¥1,375	+27.1%	¥206M ($1.3M)
2023-07-28	BUY	unknown	有限会社内田産業開発 Uchida Industrial Development Co., Ltd.	other	446.1K	¥1,375	+27.1%	¥613M ($4.0M)
2023-07-28	BUY	unknown	内田久恵 Hisae Uchida	strategic	150.0K	¥1,375	+27.1%	¥206M ($1.3M)
2023-07-28	BUY	unknown	内田廣 UCHIDA HIROSHI	strategic	837.4K	¥1,375	+27.1%	¥1.2B ($7.4M)

Frequently asked questions

Who has been buying Quest Co., Ltd. stock?: 6 distinct investors have filed 5 disclosed large-shareholding filings in Quest Co., Ltd. (2332), most recently on 2024-06-11. 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 Quest Co., Ltd. have?: Quest Co., Ltd. has 5 buy-side and 8 sell-side disclosures on record, covering ¥1.4B ($9.2M) in total reported value, spanning 2023-07-28 to 2024-06-11.
Where does StockDrifts get Quest 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 Quest Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.