Who has been buying Sakurajima Futo Kaisha, Ltd. stock?

8 distinct investors have filed 44 disclosed large-shareholding filings in Sakurajima Futo Kaisha, Ltd. (9353), most recently on 2026-02-06. 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 Sakurajima Futo Kaisha, Ltd. have?

Sakurajima Futo Kaisha, Ltd. has 44 buy-side and 6 sell-side disclosures on record, covering ¥1.3B ($8.3M) in total reported value, spanning 2021-03-25 to 2026-02-06.

Where does StockDrifts get Sakurajima Futo Kaisha, 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.

Sakurajima Futo Kaisha, Ltd. 9353

Company

櫻島埠頭株式会社Sakurajima Futo Kaisha, Ltd.

Investors

Buys

Total Value

¥1.3B ($8.3M)

Avg Return

+50.34%

Last Filing

2026-02-06

Sakurajima Futo Kaisha, Ltd. (9353) has 44 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥1.3B ($8.3M) in reported transaction value. The earliest filing StockDrifts holds for Sakurajima Futo Kaisha, Ltd. is dated 2021-03-25; the most recent is 2026-02-06. 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 +50.34%, 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
2026-08-07	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	255.9K	¥2,900	+1.4%	¥46M ($297K)
2026-08-06	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	129.5K	¥2,910	+1.0%	¥77M ($497K)
2026-07-23	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	103.0K	¥3,060	-3.9%	¥74M ($474K)
2026-07-23	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	240.1K	¥3,060	-3.9%	¥49M ($316K)
2026-07-14	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	224.0K	¥2,880	+0.3%	¥46M ($298K)
2026-06-19	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	79.0K	¥2,790	+1.1%	¥220M ($1.4M)
2026-06-18	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	208.0K	¥2,815	+0.2%	¥46M ($299K)
2026-06-16	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	191.5K	¥2,676	+3.9%	¥46M ($295K)
2026-06-11	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	174.5K	¥2,629	+5.7%	¥44M ($282K)
2026-06-01	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	157.9K	¥2,511	+9.3%	¥54M ($347K)
2026-02-06	BUY	Market Buy	楽天証券株式会社 Rakuten Securities Inc	other	146.1K	¥2,675	-11.5%	¥138M ($888K)
2026-01-16	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	117.1K	¥2,741	-13.6%	¥45M ($291K)
2026-01-16	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	136.5K	¥2,741	-13.6%	¥53M ($343K)
2026-01-13	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	100.6K	¥2,525	-6.3%	¥51M ($331K)
2026-01-07	BUY	unknown	楽天証券株式会社 Rakuten Securities Inc	other	94.7K	¥2,446	-3.2%	¥232M ($1.5M)
2025-12-25	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	80.3K	¥2,465	-4.0%	¥10M ($64K)
2025-12-23	BUY	Market Buy	山本裕治 Yuji Yamamoto	passive	84.3K	¥2,540	-6.8%	¥214M ($1.4M)
2023-08-29	BUY	unknown	原伊都子 ITUKO HARA	other	109.5K	¥2,516	-5.9%	¥275M ($1.8M)
2023-08-29	SELL	unknown	原伊都子 ITUKO HARA	other	76.6K	¥2,516	+5.9%	¥83M ($535K)
2023-08-29	BUY	unknown	原伊都子 ITUKO HARA	other	109.5K	¥2,516	-5.9%	¥275M ($1.8M)
2023-08-29	BUY	unknown	原伊都子 ITUKO HARA	other	76.6K	¥2,516	-5.9%	¥83M ($535K)
2023-06-02	SELL	unknown	松井証券株式会社 Matsui Securities Co.,Ltd	other	0	¥1,790	-32.2%	¥241M ($1.6M)
2023-05-17	BUY	unknown	松井証券株式会社 Matsui Securities Co.,Ltd	other	134.8K	¥1,901	+24.5%	¥256M ($1.7M)
2023-01-12	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	131.9K	¥1,295	+82.8%	¥37M ($237K)
2023-01-12	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	131.9K	¥1,295	+82.8%	¥37M ($237K)
2023-01-12	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	300	¥1,295	+82.8%	¥11M ($68K)
2023-01-12	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	300	¥1,295	+82.8%	¥11M ($68K)
2022-10-21	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	103.5K	¥1,370	+72.8%	¥22M ($143K)
2022-10-21	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	103.5K	¥1,370	+72.8%	¥22M ($143K)
2022-10-21	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,370	+72.8%	¥31M ($201K)
2022-10-21	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,370	+72.8%	¥31M ($201K)
2022-10-20	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	87.3K	¥1,361	+73.9%	¥23M ($147K)
2022-10-20	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,361	+73.9%	¥31M ($199K)
2022-10-20	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,361	+73.9%	¥31M ($199K)
2022-10-20	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	87.3K	¥1,361	+73.9%	¥23M ($147K)
2022-10-20	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	87.3K	¥1,361	+73.9%	¥23M ($147K)
2022-10-20	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	87.3K	¥1,361	+73.9%	¥119M ($767K)
2022-10-20	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,361	+73.9%	¥31M ($199K)
2022-10-20	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,361	+73.9%	¥31M ($199K)
2022-10-17	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	70.5K	¥1,393	+69.9%	¥21M ($138K)
2022-10-17	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	70.5K	¥1,393	+69.9%	¥21M ($138K)
2022-10-17	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	70.5K	¥1,393	+69.9%	¥98M ($634K)
2022-10-17	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,393	+69.9%	¥32M ($204K)
2022-10-17	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,393	+69.9%	¥215K ($1K)
2022-10-17	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.7K	¥1,393	+69.9%	¥215K ($1K)
2022-09-28	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	55.2K	¥1,364	+73.5%	¥75M ($486K)
2022-09-28	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.5K	¥1,364	+73.5%	¥31M ($198K)
2022-09-28	BUY	unknown	丸協産業株式会社 Marukyo Sangyo Co., Ltd.	other	55.2K	¥1,364	+73.5%	¥75M ($486K)
2022-09-28	BUY	unknown	尾崎保秀 Yasuhide Ozaki	other	22.5K	¥1,364	+73.5%	¥31M ($198K)
2022-07-29	BUY	Market Buy	セオ運輸株式会社 SEO UNYU CO., LTD.	other	160.3K	¥1,465	+61.6%	¥23M ($151K)

Showing the 50 most recent of 72 filings.

Frequently asked questions

Who has been buying Sakurajima Futo Kaisha, Ltd. stock?: 8 distinct investors have filed 44 disclosed large-shareholding filings in Sakurajima Futo Kaisha, Ltd. (9353), most recently on 2026-02-06. 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 Sakurajima Futo Kaisha, Ltd. have?: Sakurajima Futo Kaisha, Ltd. has 44 buy-side and 6 sell-side disclosures on record, covering ¥1.3B ($8.3M) in total reported value, spanning 2021-03-25 to 2026-02-06.
Where does StockDrifts get Sakurajima Futo Kaisha, 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 Sakurajima Futo Kaisha, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.