Who has been buying Hikari Tsushin, Inc. stock?

9 distinct investors have filed 21 disclosed large-shareholding filings in Hikari Tsushin, Inc. (9435), most recently on 2026-04-23. 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 Hikari Tsushin, Inc. have?

Hikari Tsushin, Inc. has 21 buy-side and 5 sell-side disclosures on record, covering ¥236.2B ($1.5B) in total reported value, spanning 2021-04-28 to 2026-04-23.

Where does StockDrifts get Hikari Tsushin, Inc. 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.

Hikari Tsushin, Inc. 9435

Company

株式会社光通信Hikari Tsushin, Inc.

Investors

Buys

Total Value

¥236.2B ($1.5B)

Avg Return

+39.55%

Last Filing

2026-04-23

Hikari Tsushin, Inc. (9435) has 21 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥236.2B ($1.5B) in reported transaction value. The earliest filing StockDrifts holds for Hikari Tsushin, Inc. is dated 2021-04-28; the most recent is 2026-04-23. 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 +39.55%, 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
2026-04-23	SELL	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	0	¥38,860	+3.6%	¥174.9B ($1.1B)
2026-04-22	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.5M	¥39,220	-4.5%	¥176.5B ($1.1B)
2026-03-26	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.5M	¥40,980	-2.7%	¥184.4B ($1.2B)
2026-03-19	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.5M	¥42,230	-5.6%	¥190.0B ($1.2B)
2026-03-19	BUY	Market Buy	合同会社光パワーZ	strategic	400.0K	¥42,230	-5.6%	¥15.9B ($102.9M)
2026-03-19	BUY	Market Buy	合同会社光パワー本家	strategic	2.4M	¥42,230	-5.6%	¥93.8B ($604.8M)
2026-03-19	BUY	Market Buy	重田康子	strategic	82.5K	¥42,230	+5.6%	¥3.3B ($21.2M)
2026-03-19	BUY	Market Buy	有限会社光パワー	activist	17.2M	¥42,230	-5.6%	¥687.0B ($4.4B)
2026-03-19	BUY	Market Buy	重田康光	activist	1.2M	¥42,230	-5.6%	¥47.8B ($308.1M)
2025-04-25	SELL	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	0	¥39,730	-0.3%	¥178.7B ($1.2B)
2025-04-24	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.5M	¥39,760	+0.3%	¥178.9B ($1.2B)
2025-03-27	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.5M	¥39,950	-0.2%	¥179.8B ($1.2B)
2025-03-26	BUY	Market Buy	重田康光 YASUMITSU SHIGETA	activist	1.2M	¥39,720	+0.3%	¥879M ($5.7M)
2025-03-26	BUY	Market Buy	合同会社光パワーZ Hikari Power Z LLC	strategic	400.0K	¥39,720	+0.3%	¥176M ($1.1M)
2025-03-26	BUY	Market Buy	合同会社光パワー本家 Hikari Power Honke LLC	strategic	2.4M	¥39,720	+0.3%	¥1.6B ($10.2M)
2025-03-26	BUY	Market Buy	重田康子 Yasuko Shigeta	strategic	82.5K	¥39,720	+0.3%	¥17.6B ($113.4M)
2025-03-26	BUY	Market Buy	有限会社光パワー HIKARI POWER LIMITED	activist	17.2M	¥39,720	+0.3%	¥11.8B ($76.0M)
2025-03-26	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.5M	¥39,720	+0.3%	¥178.7B ($1.2B)
2024-04-25	SELL	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	0	¥24,545	-62.4%	¥98.2B ($633.5M)
2024-04-24	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥25,160	+58.4%	¥100.6B ($649.3M)
2024-03-27	BUY	Market Buy	重田光時 Mitsutoki Shigeta	strategic	685.5K	¥28,735	+38.7%	¥19.7B ($126.9M)
2024-03-27	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥28,735	+38.7%	¥114.9B ($741.5M)
2024-03-27	BUY	Market Buy	株式会社鹿児島東インド会社 Kagoshima East India Inc	strategic	3.3M	¥28,735	+38.7%	¥3.1B ($20.0M)
2024-03-27	BUY	Market Buy	Kagoshima East India Limited	strategic	500	¥28,735	+38.7%	¥14M ($93K)
2024-03-27	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥28,735	+38.7%	¥114.9B ($741.5M)
2024-03-26	BUY	negotiated	重田康子 Yasuko Shigeta	strategic	82.5K	¥27,990	+42.4%	¥2.3B ($14.9M)
2024-03-26	BUY	negotiated	有限会社光パワー HIKARI POWER LIMITED	activist	17.2M	¥27,990	+42.4%	¥482.4B ($3.1B)
2024-03-26	BUY	Market Buy	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥27,990	+42.4%	¥112.0B ($722.4M)
2024-03-26	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥27,990	+42.4%	¥112.0B ($722.4M)
2024-03-26	BUY	negotiated	合同会社光パワーZ Hikari Power Z LLC	strategic	400.0K	¥27,990	+42.4%	¥11.2B ($72.2M)
2024-03-26	BUY	negotiated	合同会社光パワー本家 Hikari Power Honke LLC	strategic	2.4M	¥27,990	+42.4%	¥65.8B ($424.7M)
2024-03-26	BUY	negotiated	重田康光 YASUMITSU SHIGETA	activist	1.2M	¥27,990	+42.4%	¥33.5B ($216.4M)
2024-03-25	BUY	negotiated	合同会社光パワーZ Hikari Power Z LLC	strategic	400.0K	¥27,770	+43.5%	¥11.1B ($71.7M)
2024-03-25	BUY	negotiated	合同会社光パワー本家 Hikari Power Honke LLC	strategic	2.4M	¥27,770	+43.5%	¥65.3B ($421.4M)
2024-03-25	BUY	negotiated	重田康子 Yasuko Shigeta	strategic	82.5K	¥27,770	+43.5%	¥2.3B ($14.8M)
2024-03-25	BUY	negotiated	有限会社光パワー HIKARI POWER LIMITED	activist	17.2M	¥27,770	+43.5%	¥478.7B ($3.1B)
2024-03-25	BUY	negotiated	重田康光 YASUMITSU SHIGETA	activist	1.2M	¥27,770	+43.5%	¥33.3B ($214.7M)
2023-04-27	BUY	negotiated	合同会社光パワーZ Hikari Power Z LLC	strategic	400.0K	¥18,200	+119.0%	¥7.3B ($47.0M)
2023-04-27	BUY	negotiated	合同会社光パワー本家 Hikari Power Honke LLC	strategic	2.4M	¥18,200	+119.0%	¥42.8B ($276.2M)
2023-04-27	BUY	negotiated	重田康子 Yasuko Shigeta	strategic	82.5K	¥18,200	+119.0%	¥1.5B ($9.7M)
2023-04-27	BUY	negotiated	有限会社光パワー HIKARI POWER LIMITED	activist	17.2M	¥18,200	+119.0%	¥313.7B ($2.0B)
2023-04-27	SELL	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	0	¥18,200	-119.0%	¥72.8B ($469.7M)
2023-04-27	BUY	negotiated	重田康光 YASUMITSU SHIGETA	activist	1.2M	¥18,200	+119.0%	¥21.8B ($140.7M)
2023-04-27	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	0	¥18,200	+119.0%	¥72.8B ($469.7M)
2023-04-26	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥18,190	+119.1%	¥72.8B ($469.4M)
2023-04-26	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥18,190	+119.1%	¥72.8B ($469.4M)
2023-03-29	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥18,670	+113.5%	¥74.7B ($481.8M)
2023-03-29	BUY	unknown	公益財団法人重田教育財団 Shigeta Education Foundation	strategic	4.0M	¥18,670	+113.5%	¥74.7B ($481.8M)
2023-03-28	BUY	Market Buy	合同会社光パワーZ Hikari Power Z LLC	strategic	400.0K	¥18,630	+114.0%	¥252M ($1.6M)
2023-03-28	BUY	Market Buy	重田康光 YASUMITSU SHIGETA	activist	1.2M	¥18,630	+114.0%	¥755M ($4.9M)

Showing the 50 most recent of 65 filings.

Frequently asked questions

Who has been buying Hikari Tsushin, Inc. stock?: 9 distinct investors have filed 21 disclosed large-shareholding filings in Hikari Tsushin, Inc. (9435), most recently on 2026-04-23. 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 Hikari Tsushin, Inc. have?: Hikari Tsushin, Inc. has 21 buy-side and 5 sell-side disclosures on record, covering ¥236.2B ($1.5B) in total reported value, spanning 2021-04-28 to 2026-04-23.
Where does StockDrifts get Hikari Tsushin, Inc. 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 Hikari Tsushin, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.