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Internetworking and Broadband Consulting Co.,Ltd. 3920

Company
アイビーシー株式会社Internetworking and Broadband Consulting Co.,Ltd.
Investors
5
Buys
11
Total Value
¥2.9B ($18.7M)
Avg Return
+8.02%
Last Filing
2026-04-09

Internetworking and Broadband Consulting Co.,Ltd. (3920) has 11 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥2.9B ($18.7M) in reported transaction value. The earliest filing StockDrifts holds for Internetworking and Broadband Consulting Co.,Ltd. is dated 2022-03-25; the most recent is 2026-04-09. 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 +8.02%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-04-09BUYMarket Buy
光通信株式会社
passive422.1K¥991+0.9%¥418M ($2.7M)
2026-04-09BUYMarket Buy
株式会社UH5
passive22.8K¥991+0.9%¥23M ($146K)
2026-04-09BUYMarket Buy
株式会社UH Partners 2
passive234.9K¥991+0.9%¥57M ($368K)
2026-03-06BUYMarket Buy
株式会社UH5
passive22.8K¥983-2.4%¥23M ($148K)
2026-03-06BUYMarket Buy
株式会社UH Partners 2
passive177.1K¥983+2.4%¥178M ($1.2M)
2026-03-06BUYMarket Buy
光通信株式会社
passive422.1K¥983-2.4%¥425M ($2.7M)
2026-03-02BUYMarket Buy
株式会社UH5
passive22.8K¥978-3.0%¥23M ($148K)
2026-03-02BUYMarket Buy
株式会社UH Partners 2
passive117.9K¥978+3.0%¥119M ($766K)
2026-03-02BUYMarket Buy
光通信株式会社
passive422.1K¥978-3.0%¥425M ($2.7M)
2025-12-18BUYMarket Buy
株式会社UH5
passive22.8K¥916-9.9%¥23M ($148K)
2025-12-18BUYMarket Buy
株式会社UH Partners 2
passive32.5K¥916-9.9%¥33M ($211K)
2025-12-18BUYMarket Buy
光通信株式会社
passive422.1K¥916+9.9%¥425M ($2.7M)
2025-11-26SELLunknown
プラスフジ株式会社
strategic500.0K¥953-5.7%¥504M ($3.2M)
2025-11-26BUYunknown
加藤 裕之
other2.1M¥953+5.7%¥2.1B ($13.4M)
2025-11-25BUYMarket Buy
加藤 裕之
HIROYUKI KATO
other2.1M¥957+5.2%¥6M ($36K)
2025-11-12BUYMarket Buy
株式会社UH5
UH5 Co., Ltd.
passive22.8K¥1,001+0.6%¥23M ($147K)
2025-11-12BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive396.7K¥1,001+0.6%¥41M ($267K)
2025-09-26BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive355.6K¥985+2.2%¥3M ($18K)
2025-09-04BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive352.5K¥1,004+0.3%¥58M ($376K)
2025-08-21BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive294.5K¥1,057-4.7%¥311M ($2.0M)
2022-03-25BUYunknown
プラスフジ株式会社
Plus Fuji Co., Ltd.
strategic500.0K¥619+62.7%¥354K ($2K)
2022-03-25SELLunknown
加藤 裕之
HIROYUKI KATO
other2.0M¥619-62.7%¥7M ($43K)

Frequently asked questions

Who has been buying Internetworking and Broadband Consulting Co.,Ltd. stock?
5 distinct investors have filed 11 disclosed large-shareholding filings in Internetworking and Broadband Consulting Co.,Ltd. (3920), most recently on 2026-04-09. 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 Internetworking and Broadband Consulting Co.,Ltd. have?
Internetworking and Broadband Consulting Co.,Ltd. has 11 buy-side and 2 sell-side disclosures on record, covering ¥2.9B ($18.7M) in total reported value, spanning 2022-03-25 to 2026-04-09.
Where does StockDrifts get Internetworking and Broadband Consulting 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 Internetworking and Broadband Consulting Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.