Who has been buying Nippon Antenna Co.,Ltd. stock?

6 distinct investors have filed 9 disclosed large-shareholding filings in Nippon Antenna Co.,Ltd. (6930), most recently on 2025-11-07. 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 Nippon Antenna Co.,Ltd. have?

Nippon Antenna Co.,Ltd. has 9 buy-side and 7 sell-side disclosures on record, covering ¥914M ($5.9M) in total reported value, spanning 2021-03-26 to 2025-11-07.

Where does StockDrifts get Nippon Antenna Co.,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.

Nippon Antenna Co.,Ltd. 6930

Company

日本アンテナ株式会社Nippon Antenna Co.,Ltd.

Investors

Buys

Total Value

¥914M ($5.9M)

Avg Return

+2.95%

Last Filing

2025-11-07

Nippon Antenna Co.,Ltd. (6930) has 9 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥914M ($5.9M) in reported transaction value. The earliest filing StockDrifts holds for Nippon Antenna Co.,Ltd. is dated 2021-03-26; the most recent is 2025-11-07. 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 +2.95%, 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
2025-11-07	SELL	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	610.9K	¥834	+1.3%	¥388M ($2.5M)
2025-09-24	BUY	Market Buy	ヒカリ・ツウシン・インベストメンツ・アジア・プライベート・リミテッド Hikari Tsushin Investments Asia Pte. Ltd.	passive	1.0M	¥878	-6.3%	¥889M ($5.7M)
2025-09-24	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	112.5K	¥878	-6.3%	¥99M ($637K)
2025-09-24	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	416.1K	¥878	-6.3%	¥129M ($834K)
2025-09-24	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	493.5K	¥878	-6.3%	¥433M ($2.8M)
2025-09-24	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	112.5K	¥878	-6.3%	¥99M ($637K)
2025-08-21	SELL	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.1M	¥896	+8.2%	¥132M ($851K)
2024-12-05	SELL	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.2M	¥537	-53.3%	¥78M ($500K)
2024-03-06	BUY	Market Buy	ヒカリ・ツウシン・インベストメンツ・アジア・プライベート・リミテッド Hikari Tsushin Investments Asia Pte. Ltd.	passive	1.0M	¥503	+63.6%	¥509M ($3.3M)
2024-03-06	SELL	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	112.5K	¥503	-63.6%	¥29M ($186K)
2024-03-06	SELL	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	268.9K	¥503	-63.6%	¥117M ($752K)
2024-03-06	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	493.5K	¥503	+63.6%	¥11M ($70K)
2024-03-06	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	112.5K	¥503	-63.6%	¥349M ($2.3M)
2022-09-22	BUY	Market Buy	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.4M	¥548	+50.2%	¥230M ($1.5M)
2022-01-18	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	170.3K	¥823	+0.0%	¥140M ($904K)
2022-01-18	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	500.0K	¥823	+0.0%	¥412M ($2.7M)
2022-01-18	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	472.2K	¥823	+0.0%	¥32M ($205K)
2022-01-18	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	806.5K	¥823	+0.0%	¥140M ($904K)
2021-12-06	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	433.9K	¥952	-13.6%	¥15M ($97K)
2021-12-06	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	976.8K	¥952	-13.6%	¥930M ($6.0M)
2021-12-06	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	500.0K	¥952	-13.6%	¥476M ($3.1M)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	417.9K	¥979	-15.9%	¥81M ($524K)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	976.8K	¥979	-15.9%	¥956M ($6.2M)
2021-10-28	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	334.0K	¥991	-16.9%	¥145M ($933K)
2021-10-28	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	976.8K	¥991	-16.9%	¥968M ($6.2M)
2021-09-24	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	188.6K	¥991	-16.9%	¥157M ($1.0M)
2021-09-24	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	976.8K	¥991	-16.9%	¥968M ($6.2M)
2021-03-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	29.5K	¥999	-17.6%	¥29M ($190K)
2021-03-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	976.8K	¥999	-17.6%	¥114M ($737K)

Frequently asked questions

Who has been buying Nippon Antenna Co.,Ltd. stock?: 6 distinct investors have filed 9 disclosed large-shareholding filings in Nippon Antenna Co.,Ltd. (6930), most recently on 2025-11-07. 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 Nippon Antenna Co.,Ltd. have?: Nippon Antenna Co.,Ltd. has 9 buy-side and 7 sell-side disclosures on record, covering ¥914M ($5.9M) in total reported value, spanning 2021-03-26 to 2025-11-07.
Where does StockDrifts get Nippon Antenna Co.,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 Nippon Antenna Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.