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Riskmonster.com 3768

Company
リスクモンスター株式会社Riskmonster.com
Investors
5
Buys
11
Total Value
¥628M ($4.0M)
Avg Return
-2.71%
Last Filing
2025-12-11

Riskmonster.com (3768) has 11 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥628M ($4.0M) in reported transaction value. The earliest filing StockDrifts holds for Riskmonster.com is dated 2021-12-20; the most recent is 2025-12-11. Across these filings the average return since disclosure is -2.71%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-08-07BUYMarket Buy
光通信株式会社
passive557.2K¥563--
2026-08-07BUYMarket Buy
株式会社UH Partners 2
passive559.8K¥563--
2026-08-07BUYMarket Buy
株式会社UH Partners 3
passive90.3K¥563+1.4%¥43M ($277K)
2026-08-07SELLunknown
株式会社UH5
unknown0¥563-1.4%¥12M ($80K)
2026-08-07BUYMarket Buy
株式会社UH6
passive22.1K¥563-¥12M ($80K)
2025-12-11BUYMarket Buy
光通信株式会社
passive557.2K¥510--
2025-12-11BUYMarket Buy
株式会社UH Partners 2
passive559.8K¥510+12.0%¥21M ($136K)
2025-12-11BUYMarket Buy
株式会社UH Partners 3
passive13.9K¥510-¥7M ($46K)
2025-12-11BUYMarket Buy
株式会社UH5
passive22.1K¥510-¥11M ($73K)
2025-09-26BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive557.2K¥518--
2025-09-26BUYMarket Buy
株式会社UH Partners 2
UH Partners 2, Inc.
passive518.9K¥518+10.2%¥38M ($242K)
2025-07-25BUYMarket Buy
藤本 太一
TAICHI FUJIMOTO
activist1.2M¥499+14.4%¥43M ($280K)
2025-06-05BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive557.2K¥502--
2025-06-05BUYMarket Buy
株式会社UH Partners 2
UH Partners 2, Inc.
passive446.1K¥502+13.8%¥42M ($270K)
2025-04-22SELLMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive557.2K¥495-15.3%¥3M ($20K)
2025-04-22BUYMarket Buy
株式会社UH Partners 2
UH Partners 2, Inc.
passive362.5K¥495+15.3%¥38M ($246K)
2023-08-02BUYMarket Buy
藤本 太一
TAICHI FUJIMOTO
activist1.1M¥585-2.4%¥47M ($306K)
2023-08-02BUYunknown
藤本 太一
TAICHI FUJIMOTO
activist1.1M¥585-¥47M ($306K)
2023-07-10BUYMarket Buy
藤本 太一
TAICHI FUJIMOTO
activist1.0M¥592-3.5%¥904K ($6K)
2022-09-07BUYunknown
藤本 太一
TAICHI FUJIMOTO
activist1.0M¥710--
2022-08-30BUYunknown
藤本 太一
TAICHI FUJIMOTO
activist1.0M¥740--
2022-07-15BUYMarket Buy
藤本 太一
TAICHI FUJIMOTO
activist1.0M¥706-19.1%¥69M ($445K)
2022-06-24BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive557.2K¥719--
2022-06-24BUYMarket Buy
株式会社UH Partners 2
UH Partners 2, Inc.
passive281.9K¥719-20.6%¥57M ($368K)
2022-05-24BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive557.2K¥782--
2022-05-24BUYMarket Buy
株式会社UH Partners 2
UH Partners 2, Inc.
passive203.3K¥782-27.0%¥96M ($621K)
2022-02-09BUYunknown
藤本 太一
TAICHI FUJIMOTO
activist907.2K¥594--
2021-12-28SELLMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive557.2K¥588+2.9%¥4M ($29K)
2021-12-28BUYMarket Buy
株式会社UH Partners 2
UH Partners 2, Inc.
passive80.3K¥588-¥47M ($305K)
2021-12-20BUYMarket Buy
藤本 太一
TAICHI FUJIMOTO
activist907.2K¥582-1.9%¥140M ($904K)

Frequently asked questions

Who has been buying Riskmonster.com stock?
5 distinct investors have filed 11 disclosed large-shareholding filings in Riskmonster.com (3768), most recently on 2025-12-11. 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 Riskmonster.com have?
Riskmonster.com has 11 buy-side and 2 sell-side disclosures on record, covering ¥628M ($4.0M) in total reported value, spanning 2021-12-20 to 2025-12-11.
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.