Who has been buying SIGMAXYZ Holdings Inc. stock?

13 distinct investors have filed 23 disclosed large-shareholding filings in SIGMAXYZ Holdings Inc. (6088), most recently on 2025-11-10. 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 SIGMAXYZ Holdings Inc. have?

SIGMAXYZ Holdings Inc. has 23 buy-side and 30 sell-side disclosures on record, covering ¥16.4B ($105.7M) in total reported value, spanning 2021-03-19 to 2025-11-10.

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.

SIGMAXYZ Holdings Inc. 6088

Company

株式会社シグマクシス・ホールディングス(2021年10月1日付で株式会社シグマクシスから商号変更)SIGMAXYZ Holdings Inc.

Investors

Buys

Total Value

¥16.4B ($105.7M)

Avg Return

+3.47%

Last Filing

2025-11-10

SIGMAXYZ Holdings Inc. (6088) has 23 disclosed large-shareholding filings and 30 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥16.4B ($105.7M) in reported transaction value. The earliest filing StockDrifts holds for SIGMAXYZ Holdings Inc. is dated 2021-03-19; the most recent is 2025-11-10. Across these filings the average return since disclosure is +3.47%, 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
2025-11-10	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	3.0M	¥735	+20.5%	¥674M ($4.3M)
2025-11-10	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	691.0K	¥735	+20.5%	¥7M ($42K)
2025-09-05	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	705.0K	¥940	-	-
2025-09-05	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	3.9M	¥940	-37.9%	¥3.6B ($23.4M)
2025-08-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	705.0K	¥1,114	-	-
2025-08-07	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	64.6K	¥1,114	-47.6%	¥6.4B ($41.3M)
2025-08-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	5.6M	¥1,114	+47.6%	¥773M ($5.0M)
2025-05-09	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	6.2M	¥1,075	+45.7%	¥708M ($4.6M)
2025-05-09	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	705.0K	¥1,075	+45.7%	¥545M ($3.5M)
2025-05-09	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	491.9K	¥1,075	-45.7%	¥29M ($185K)
2025-02-14	SELL	unknown	株式会社インテック INTEC Inc.	other	6.6M	¥1,000	+41.6%	¥2.0B ($13.1M)
2025-02-14	BUY	unknown	株式会社インテック INTEC Inc.	other	6.6M	¥1,000	-	¥2.0B ($13.1M)
2024-11-08	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	603.5K	¥966	-	-
2024-11-08	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	3.5M	¥966	-39.5%	¥430M ($2.8M)
2024-11-08	BUY	Market Buy	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	230.7K	¥966	-39.5%	¥163M ($1.1M)
2024-10-07	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	603.5K	¥858	-31.9%	¥199M ($1.3M)
2024-10-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	3.0M	¥858	-31.9%	¥397M ($2.6M)
2024-10-07	SELL	Market Buy	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	60.4K	¥858	+31.9%	¥15M ($99K)
2023-10-03	SELL	Market Buy	カバウター・マネージメント・エルエルシー (Kabouter Management, LLC) Kabouter Management, LLC	passive	1.9M	¥752.5	+22.4%	¥355M ($2.3M)
2023-10-03	SELL	Market Buy	ワサッチ・アドバイザーズ・エルピー Wasatch Advisors, LP	passive	1.7M	¥752.5	+22.4%	¥467M ($3.0M)
2023-08-03	BUY	Market Buy	ワサッチ・アドバイザーズ・エルピー Wasatch Advisors, LP	passive	2.3M	¥649	-10.0%	¥1.5B ($9.8M)
2023-07-25	SELL	unknown	株式会社東京共同会計事務所 Tokyo Kyodo Accounting Office Co., Ltd.	other	2.0M	¥656	+11.0%	¥313M ($2.0M)
2023-06-07	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	386.9K	¥625	+6.6%	¥287M ($1.8M)
2023-06-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	2.6M	¥625	-6.6%	¥1.6B ($10.5M)
2023-06-07	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	81.2K	¥625	-6.6%	¥3M ($19K)
2023-05-08	SELL	Market Buy	ワサッチ・アドバイザーズ・エルピー Wasatch Advisors, LP	passive	2.0M	¥540.5	-8.1%	¥308M ($2.0M)
2023-05-08	BUY	Market Buy	ワサッチ・アドバイザーズ・エルピー Wasatch Advisors, LP	passive	2.0M	¥540.5	-	¥308M ($2.0M)
2023-01-17	SELL	Market Buy	ワサッチ・アドバイザーズ・エルピー Wasatch Advisors, LP	passive	2.5M	¥613	+4.7%	¥128M ($824K)
2023-01-06	SELL	Market Buy	ワサッチ・アドバイザーズ・インク Wasatch Advisors, Inc.	passive	2.7M	¥582	-0.3%	¥439M ($2.8M)
2022-08-08	SELL	unknown	ハイクレア・インターナショナル・インベスターズ・エルエルピー(Highclere International Investors LLP) Highclere International Investors LLP	other	1.8M	¥622.5	+6.2%	¥308M ($2.0M)
2022-05-18	SELL	Market Buy	ワサッチ・アドバイザーズ・インク Wasatch Advisors, Inc.	passive	3.5M	¥565	-3.4%	¥277M ($1.8M)
2022-01-18	BUY	Market Buy	ワサッチ・アドバイザーズ・インク Wasatch Advisors, Inc.	passive	2.0M	¥563	+3.7%	¥134M ($866K)
2021-12-07	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	424.2K	¥670.75	-12.9%	¥48M ($311K)
2021-12-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.7M	¥670.75	-12.9%	¥96M ($621K)
2021-12-07	BUY	Market Buy	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	38.7K	¥670.75	-	-
2021-10-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	51.3K	¥623	-	¥32M ($206K)
2021-10-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	579.5K	¥623	+6.3%	¥192M ($1.2M)
2021-10-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	356.7K	¥623	-6.3%	¥1M ($9K)
2021-09-13	BUY	Market Buy	カバウター・マネージメント・エルエルシー (Kabouter Management, LLC) Kabouter Management, LLC	passive	1.2M	¥729	-19.9%	¥849M ($5.5M)
2021-09-08	BUY	Market Buy	ワサッチ・アドバイザーズ・インク Wasatch Advisors, Inc.	passive	1.8M	¥716.25	-18.5%	¥201M ($1.3M)
2021-08-05	BUY	Market Buy	ワサッチ・アドバイザーズ・インク Wasatch Advisors, Inc.	passive	1.5M	¥492.5	+18.6%	¥125M ($809K)
2021-07-06	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	354.8K	¥587	+0.5%	¥23M ($149K)
2021-07-06	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-295	¥587	-14.3%	¥213M ($1.4M)
2021-07-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	885.9K	¥587	-0.5%	¥94M ($605K)
2021-07-05	BUY	Market Buy	ワサッチ・アドバイザーズ・インク Wasatch Advisors, Inc.	passive	1.2M	¥583.75	+0.0%	¥709M ($4.6M)
2021-05-21	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	352.7K	¥512.25	-14.0%	¥115M ($742K)
2021-05-21	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.6M	¥512.25	-14.0%	¥44M ($283K)
2021-05-21	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	38.7K	¥512.25	-	¥20M ($128K)
2021-05-19	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	364.4K	¥496.25	-17.7%	¥55M ($356K)
2021-05-19	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	726.1K	¥496.25	-17.7%	¥49M ($319K)

Showing the 50 most recent of 63 filings.

Frequently asked questions

Who has been buying SIGMAXYZ Holdings Inc. stock?: 13 distinct investors have filed 23 disclosed large-shareholding filings in SIGMAXYZ Holdings Inc. (6088), most recently on 2025-11-10. 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 SIGMAXYZ Holdings Inc. have?: SIGMAXYZ Holdings Inc. has 23 buy-side and 30 sell-side disclosures on record, covering ¥16.4B ($105.7M) in total reported value, spanning 2021-03-19 to 2025-11-10.
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.