Who has been buying SG Holdings Co.,Ltd. stock?

8 distinct investors have filed 11 disclosed large-shareholding filings in SG Holdings Co.,Ltd. (9143), most recently on 2025-07-23. 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 SG Holdings Co.,Ltd. have?

SG Holdings Co.,Ltd. has 11 buy-side and 7 sell-side disclosures on record, covering ¥86.5B ($557.8M) in total reported value, spanning 2021-11-26 to 2025-07-23.

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.

SG Holdings Co.,Ltd. 9143

Company

SGホールディングス株式会社SG Holdings Co.,Ltd.

Investors

Buys

Total Value

¥86.5B ($557.8M)

Avg Return

-18.82%

Last Filing

2025-07-23

SG Holdings Co.,Ltd. (9143) has 11 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥86.5B ($557.8M) in reported transaction value. The earliest filing StockDrifts holds for SG Holdings Co.,Ltd. is dated 2021-11-26; the most recent is 2025-07-23. Across these filings the average return since disclosure is -18.82%, 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
2025-07-23	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	11.5M	¥1,614.5	-7.5%	¥18.6B ($120.1M)
2025-07-23	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	20.8M	¥1,614.5	-7.5%	¥33.5B ($216.1M)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	20.8M	¥1,514.5	-	-
2024-07-29	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	9.6M	¥1,514.5	+1.4%	¥4.3B ($27.5M)
2024-07-29	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	3.3M	¥1,514.5	-1.4%	¥291M ($1.9M)
2024-06-21	BUY	unknown	株式会社新生ホールディングス SHINSEI HOLDINGS CO.,LTD	activist	107.8M	¥1,470	-	-
2024-06-21	BUY	block_purchase	株式会社新生ホールディングス SHINSEI HOLDINGS CO.,LTD	activist	107.8M	¥1,470	+1.6%	¥5.6B ($36.4M)
2023-04-03	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	20.8M	¥1,976	-	-
2023-04-03	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	290.2K	¥1,976	-24.4%	¥61.6B ($397.6M)
2023-04-03	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	12.3M	¥1,976	+24.4%	¥380M ($2.4M)
2023-04-03	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	3.1M	¥1,976	-24.4%	¥380M ($2.4M)
2022-10-03	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	20.8M	¥2,017	+25.9%	¥11.4B ($73.3M)
2022-10-03	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	12.6M	¥2,017	+25.9%	¥517M ($3.3M)
2022-10-03	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.9M	¥2,017	-	-
2022-10-03	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	818.0K	¥2,017	-	¥1.6B ($10.6M)
2022-09-16	BUY	unknown	公益財団法人SGH文化スポーツ振興財団 SGH CULTURE AND SPORTS PROMOTION FOUNDATION	other	48.4M	¥2,136	-	-
2022-09-16	BUY	unknown	新生興産株式会社 Shinsei Kousan	activist	107.8M	¥2,136	-	¥8.2B ($53.0M)
2022-09-16	BUY	unknown	公益財団法人SGH文化スポーツ振興財団 SGH CULTURE AND SPORTS PROMOTION FOUNDATION	other	48.4M	¥2,136	-	-
2022-09-16	BUY	block_purchase	新生興産株式会社 Shinsei Kousan	activist	107.8M	¥2,136	-30.1%	¥8.2B ($53.0M)
2022-06-20	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	26.4M	¥2,149	+30.5%	¥7.6B ($48.8M)
2022-06-20	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	12.8M	¥2,149	+30.5%	¥1.4B ($8.9M)
2022-06-20	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.9M	¥2,149	-30.5%	¥138M ($888K)
2022-03-08	BUY	block_purchase	新生興産株式会社 Shinsei Kousan	activist	104.0M	¥2,135	-30.0%	¥16.3B ($105.0M)
2022-03-07	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	29.9M	¥2,131	-	-
2022-03-07	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	13.5M	¥2,131	+29.9%	¥4.6B ($29.9M)
2022-03-07	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.9M	¥2,131	-29.9%	¥136M ($880K)
2021-11-26	BUY	Market Buy	新生興産株式会社 Shinsei Kousan	activist	96.3M	¥2,544	-41.3%	¥19.5B ($126.1M)
2021-11-26	BUY	unknown	新生興産株式会社 Shinsei Kousan	activist	96.3M	¥2,544	-	¥19.5B ($126.1M)
2021-11-26	BUY	unknown	新生興産株式会社 Shinsei Kousan	activist	96.3M	¥2,544	-	¥19.5B ($126.1M)

Frequently asked questions

Who has been buying SG Holdings Co.,Ltd. stock?: 8 distinct investors have filed 11 disclosed large-shareholding filings in SG Holdings Co.,Ltd. (9143), most recently on 2025-07-23. 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 SG Holdings Co.,Ltd. have?: SG Holdings Co.,Ltd. has 11 buy-side and 7 sell-side disclosures on record, covering ¥86.5B ($557.8M) in total reported value, spanning 2021-11-26 to 2025-07-23.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.