Who has been buying San-Ai Obbli Co., Ltd. stock?

8 distinct investors have filed 10 disclosed large-shareholding filings in San-Ai Obbli Co., Ltd. (8097), most recently on 2025-10-22. 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 San-Ai Obbli Co., Ltd. have?

San-Ai Obbli Co., Ltd. has 10 buy-side and 10 sell-side disclosures on record, covering ¥6.1B ($39.6M) in total reported value, spanning 2022-01-28 to 2025-10-22.

Where does StockDrifts get San-Ai Obbli 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.

San-Ai Obbli Co., Ltd. 8097

Company

三愛石油株式会社San-Ai Obbli Co., Ltd.

Investors

Buys

Total Value

¥6.1B ($39.6M)

Avg Return

+73.48%

Last Filing

2025-10-22

San-Ai Obbli Co., Ltd. (8097) has 10 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥6.1B ($39.6M) in reported transaction value. The earliest filing StockDrifts holds for San-Ai Obbli Co., Ltd. is dated 2022-01-28; the most recent is 2025-10-22. 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 +73.48%, 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
2026-07-23	BUY	Market Buy	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	2.1M	¥2,294	+2.8%	¥4.5B ($29.2M)
2026-07-23	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	344.3K	¥2,294	-2.8%	¥361M ($2.3M)
2026-07-23	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	1.1M	¥2,294	+2.8%	¥405M ($2.6M)
2026-07-23	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.3M	¥2,294	-2.8%	¥3.7B ($23.7M)
2026-06-15	SELL	unknown	フィデリティ・マネジメント・アンド・リサーチ・ジャパン株式会社	other	846.8K	¥2,093	-2.8%	¥3.6B ($23.2M)
2026-06-15	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	534.4K	¥2,093	+2.8%	¥262M ($1.7M)
2026-06-15	BUY	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	214.7K	¥2,093	+2.8%	¥449M ($2.9M)
2026-06-15	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	266.8K	¥2,093	+2.8%	¥558M ($3.6M)
2026-06-15	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	4.8M	¥2,093	+2.8%	¥3.7B ($24.0M)
2026-06-15	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	536.5K	¥2,093	+2.8%	¥565M ($3.6M)
2026-06-15	BUY	Market Buy	フィデリティ・マネジメント・アンド・リサーチ・ジャパン株式会社	other	2.6M	¥2,093	+2.8%	¥2.7B ($17.7M)
2026-06-15	BUY	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	215.8K	¥2,093	+2.8%	¥452M ($2.9M)
2026-06-15	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	267.7K	¥2,093	+2.8%	¥560M ($3.6M)
2026-06-15	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	534.1K	¥2,093	+2.8%	¥43M ($275K)
2026-06-15	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	4.7M	¥2,093	-2.8%	¥754M ($4.9M)
2026-06-15	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	3.0M	¥2,093	+2.8%	¥817M ($5.3M)
2026-06-15	BUY	unknown	フィデリティ・マネジメント・アンド・リサーチ・ジャパン株式会社	other	842.6K	¥2,093	+2.8%	¥1.8B ($11.4M)
2026-06-15	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	219.2K	¥2,093	+2.8%	¥15M ($96K)
2026-06-15	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	5.3M	¥2,093	+2.8%	¥1.0B ($6.7M)
2026-06-15	SELL	unknown	フィデリティ・マネジメント・アンド・リサーチ・ジャパン株式会社	other	118.7K	¥2,093	-2.8%	¥1.5B ($9.8M)
2026-06-15	BUY	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	221.8K	¥2,093	+2.8%	¥464M ($3.0M)
2026-06-15	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	540.9K	¥2,093	+2.8%	¥1.1B ($7.3M)
2026-06-15	BUY	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	5.3M	¥2,093	+2.8%	¥11.0B ($71.2M)
2026-06-15	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	914.8K	¥2,093	+2.8%	¥1.5B ($9.5M)
2026-06-15	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	926.0K	¥2,093	+2.8%	¥14M ($92K)
2026-06-15	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	419.4K	¥2,093	-2.8%	¥242M ($1.6M)
2026-06-15	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	4.0M	¥2,093	-2.8%	¥1.4B ($8.8M)
2026-06-15	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	175.0K	¥2,093	+2.8%	¥366M ($2.4M)
2026-06-15	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	927.4K	¥2,093	+2.8%	¥69M ($446K)
2026-06-15	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	4.1M	¥2,093	+2.8%	¥359M ($2.3M)
2026-06-15	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	175.4K	¥2,093	+2.8%	¥367M ($2.4M)
2026-06-15	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	935.3K	¥2,093	+2.8%	¥14M ($89K)
2026-06-15	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	528.9K	¥2,093	-2.8%	¥14M ($89K)
2026-06-15	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	4.1M	¥2,093	+2.8%	¥69M ($446K)
2025-10-22	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	5.8M	¥2,094	+10.4%	¥69M ($446K)
2025-10-07	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	5.7M	¥2,112	+9.4%	¥878M ($5.7M)
2025-05-09	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	5.3M	¥1,727	+33.8%	¥1.2B ($7.6M)
2024-08-07	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	2.6M	¥1,820	-27.0%	¥1.4B ($9.1M)
2024-02-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	4.8M	¥1,730	-33.6%	¥1.3B ($8.2M)
2023-10-19	SELL	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	1.7M	¥1,596	-44.8%	¥1.2B ($7.4M)
2023-10-19	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	792.7K	¥1,596	+44.8%	¥33M ($210K)
2023-10-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	673.0K	¥1,596	+44.8%	¥1.1B ($6.9M)
2023-08-04	SELL	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	776.2K	¥1,548	-49.3%	¥11M ($68K)
2023-08-04	SELL	Market Buy	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	2.4M	¥1,548	-49.3%	¥1.1B ($7.0M)
2023-08-04	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	673.0K	¥1,548	+49.3%	¥42M ($272K)
2023-07-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	5.5M	¥1,497	-54.4%	¥1.0B ($6.8M)
2023-03-06	BUY	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	3.5M	¥1,448	+59.6%	¥5.1B ($32.8M)
2023-01-19	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	813.2K	¥1,272	+81.7%	¥81M ($524K)
2023-01-19	SELL	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	3.2M	¥1,272	-81.7%	¥831M ($5.4M)
2023-01-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	673.0K	¥1,272	+81.7%	¥856M ($5.5M)

Showing the 50 most recent of 56 filings.

Frequently asked questions

Who has been buying San-Ai Obbli Co., Ltd. stock?: 8 distinct investors have filed 10 disclosed large-shareholding filings in San-Ai Obbli Co., Ltd. (8097), most recently on 2025-10-22. 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 San-Ai Obbli Co., Ltd. have?: San-Ai Obbli Co., Ltd. has 10 buy-side and 10 sell-side disclosures on record, covering ¥6.1B ($39.6M) in total reported value, spanning 2022-01-28 to 2025-10-22.
Where does StockDrifts get San-Ai Obbli 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 San-Ai Obbli Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.