Who has been buying MTI Ltd. stock?

8 distinct investors have filed 21 disclosed large-shareholding filings in MTI Ltd. (9438), most recently on 2026-04-07. 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 MTI Ltd. have?

MTI Ltd. has 21 buy-side and 12 sell-side disclosures on record, covering ¥3.5B ($22.7M) in total reported value, spanning 2021-11-29 to 2026-04-07.

Where does StockDrifts get MTI 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.

MTI Ltd. 9438

Company

株式会社エムティーアイMTI Ltd.

Investors

Buys

Total Value

¥3.5B ($22.7M)

Avg Return

+0.48%

Last Filing

2026-04-07

MTI Ltd. (9438) has 21 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥3.5B ($22.7M) in reported transaction value. The earliest filing StockDrifts holds for MTI Ltd. is dated 2021-11-29; the most recent is 2026-04-07. 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 +0.48%, 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
2026-04-07	BUY	Market Buy	株式会社UH Partners 3	passive	4.1M	¥643	-10.4%	¥2.7B ($17.1M)
2026-04-07	BUY	Market Buy	株式会社UH Partners 2	passive	3.9M	¥643	-10.4%	¥2.5B ($16.0M)
2026-04-07	BUY	Market Buy	光通信株式会社	passive	4.1M	¥643	-10.4%	¥54M ($351K)
2026-04-07	BUY	Market Buy	株式会社UH6	passive	1.5M	¥643	-10.4%	¥965M ($6.2M)
2026-04-07	SELL	Market Buy	株式会社アイビー	unknown	0	¥643	+10.4%	¥964M ($6.2M)
2026-04-07	BUY	Market Buy	株式会社エヌオーアイ	passive	1.5M	¥643	-10.4%	¥210M ($1.4M)
2026-04-07	BUY	Market Buy	株式会社エスアイエル	passive	4.4M	¥643	-10.4%	¥2.8B ($18.1M)
2025-12-23	BUY	Market Buy	株式会社エヌオーアイ	passive	1.2M	¥737	-17.0%	¥706M ($4.6M)
2025-12-23	SELL	Market Buy	株式会社エスアイエル	passive	4.4M	¥737	+17.0%	¥2.7B ($17.2M)
2025-12-23	SELL	Market Buy	株式会社UH Partners 3	passive	4.1M	¥737	+17.0%	¥2.5B ($16.3M)
2025-12-23	SELL	Market Buy	株式会社UH Partners 2	passive	3.9M	¥737	+17.0%	¥2.4B ($15.2M)
2025-12-23	SELL	Market Buy	光通信株式会社	passive	4.1M	¥737	+17.0%	¥2.5B ($16.0M)
2025-12-23	SELL	Market Buy	株式会社アイビー	passive	1.5M	¥737	+17.0%	¥918M ($5.9M)
2025-09-26	BUY	Market Buy	株式会社アイビー IB, Inc.	passive	1.5M	¥804	-23.9%	¥1.2B ($7.8M)
2025-09-26	BUY	Market Buy	株式会社エヌオーアイ NIO Co., Ltd.	passive	928.6K	¥804	-23.9%	¥262M ($1.7M)
2025-09-26	SELL	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	4.4M	¥804	+23.9%	¥5M ($31K)
2025-09-26	SELL	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥804	+23.9%	¥5M ($31K)
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	3.9M	¥804	-23.9%	¥3.1B ($20.0M)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥804	-23.9%	¥3.3B ($21.1M)
2025-06-06	BUY	Market Buy	株式会社エヌオーアイ NIO Co., Ltd.	passive	600.8K	¥857	-28.6%	¥62M ($400K)
2025-06-06	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	4.4M	¥857	-28.6%	¥3.7B ($24.1M)
2025-06-06	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥857	-28.6%	¥3.5B ($22.8M)
2025-06-06	SELL	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	3.9M	¥857	+28.6%	¥1.3B ($8.3M)
2025-06-06	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥857	-28.6%	¥3.5B ($22.5M)
2025-06-06	BUY	Market Buy	株式会社アイビー IB, Inc.	passive	1.5M	¥857	-28.6%	¥1.3B ($8.3M)
2025-04-30	BUY	Market Buy	株式会社エヌオーアイ NIO Co., Ltd.	passive	530.2K	¥804	-23.9%	¥276M ($1.8M)
2025-04-30	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	4.4M	¥804	-23.9%	¥111M ($719K)
2025-04-30	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥804	-23.9%	¥53M ($344K)
2025-04-30	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.4M	¥804	-23.9%	¥68M ($438K)
2025-04-30	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥804	-23.9%	¥53M ($344K)
2023-12-15	BUY	Market Buy	株式会社エヌオーアイ NIO Co., Ltd.	passive	191.7K	¥586	+4.4%	¥112M ($725K)
2023-12-15	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥586	+4.4%	¥2.4B ($15.4M)
2023-12-15	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	4.3M	¥586	+4.4%	¥251M ($1.6M)
2023-12-15	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥586	+4.4%	¥2.4B ($15.6M)
2023-12-15	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.4M	¥586	+4.4%	¥3.1B ($20.3M)
2023-11-16	BUY	Market Buy	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	strategic	3.1M	¥571	+7.2%	¥35M ($226K)
2023-03-22	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.4M	¥575	+6.4%	¥3.1B ($19.9M)
2023-03-22	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥575	+6.4%	¥2.3B ($15.1M)
2023-03-22	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	3.9M	¥575	+6.4%	¥356M ($2.3M)
2023-03-22	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥575	+6.4%	¥2.4B ($15.3M)
2022-09-14	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	3.2M	¥503	+21.7%	¥311M ($2.0M)
2022-09-14	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥503	+21.7%	¥2.1B ($13.4M)
2022-09-14	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.4M	¥503	+21.7%	¥2.7B ($17.4M)
2022-09-14	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥503	+21.7%	¥2.0B ($13.2M)
2022-07-08	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	2.6M	¥483	+26.7%	¥299M ($1.9M)
2022-07-08	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥483	+26.7%	¥2.0B ($12.9M)
2022-07-08	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.4M	¥483	+26.7%	¥2.6B ($16.7M)
2022-07-08	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.1M	¥483	+26.7%	¥2.0B ($12.7M)
2022-06-07	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	2.0M	¥452	+35.4%	¥282M ($1.8M)
2022-06-07	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.1M	¥452	+35.4%	¥1.9B ($12.0M)

Showing the 50 most recent of 67 filings.

Frequently asked questions

Who has been buying MTI Ltd. stock?: 8 distinct investors have filed 21 disclosed large-shareholding filings in MTI Ltd. (9438), most recently on 2026-04-07. 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 MTI Ltd. have?: MTI Ltd. has 21 buy-side and 12 sell-side disclosures on record, covering ¥3.5B ($22.7M) in total reported value, spanning 2021-11-29 to 2026-04-07.
Where does StockDrifts get MTI 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 MTI Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.