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KAYAC Inc. 3904

Company
株式会社カヤックKAYAC Inc.
Investors
4
Buys
2
Total Value
¥1.2B ($8.0M)
Avg Return
-50.22%
Last Filing
2025-12-08

KAYAC Inc. (3904) has 2 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.2B ($8.0M) in reported transaction value. The earliest filing StockDrifts holds for KAYAC Inc. is dated 2022-06-17; the most recent is 2025-12-08. Across these filings the average return since disclosure is -50.22%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-08-04SELLunknown
久場 智喜
TOMOYOSHI KUBA
activist2.2M¥412-1.2%¥111M ($715K)
2026-08-04SELLunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.4M¥412-1.2%¥78M ($501K)
2026-08-04SELLunknown
貝畑 政徳
MASANORI KAIHATA
activist2.8M¥412-1.2%¥78M ($501K)
2025-12-08SELLunknown
久場 智喜
TOMOYOSHI KUBA
activist2.5M¥539+22.6%¥225M ($1.5M)
2025-12-08BUYunknown
久場 智喜
TOMOYOSHI KUBA
activist2.5M¥539-¥222M ($1.4M)
2025-12-05BUYunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.5M¥531-¥125M ($806K)
2025-12-05BUYunknown
貝畑 政徳
MASANORI KAIHATA
activist3.0M¥531-¥160M ($1.0M)
2025-12-05SELLunknown
貝畑 政徳
MASANORI KAIHATA
activist3.0M¥531+21.5%¥160M ($1.0M)
2025-12-05BUYunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.5M¥531-¥125M ($806K)
2025-12-05SELLunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.5M¥531+21.5%¥152M ($982K)
2025-06-05SELLunknown
大和証券株式会社
Daiwa Securities Co.Ltd.
other500¥449+7.1%¥550M ($3.6M)
2025-04-11SELLunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.8M¥440+5.2%¥23M ($146K)
2024-06-06BUYunknown
久場 智喜
TOMOYOSHI KUBA
activist2.9M¥663-¥129M ($833K)
2024-06-06SELLunknown
久場 智喜
TOMOYOSHI KUBA
activist2.9M¥663+37.1%¥129M ($833K)
2024-03-11SELLunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.8M¥711+41.4%¥142M ($916K)
2024-03-11BUYunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist3.8M¥711-¥142M ($916K)
2024-03-11BUYunknown
貝畑 政徳
MASANORI KAIHATA
activist3.3M¥711-¥253M ($1.6M)
2024-03-11SELLunknown
貝畑 政徳
MASANORI KAIHATA
activist3.3M¥711+41.4%¥255M ($1.6M)
2023-09-05SELLunknown
久場 智喜
Tomoyoshi Kuba
activist3.1M¥774+46.1%¥135M ($870K)
2023-05-18SELLunknown
久場 智喜
Tomoyoshi Kuba
activist3.3M¥877+52.5%¥140M ($903K)
2022-08-24BUYunknown
久場 智喜
Tomoyoshi Kuba
activist3.4M¥890-¥152M ($979K)
2022-08-24BUYunknown
久場 智喜
Tomoyoshi Kuba
activist3.4M¥890-53.1%¥152M ($979K)
2022-06-21BUYsubscription
大和証券株式会社
Daiwa Securities Co.Ltd.
other1.3M¥839-50.3%¥1.1B ($7.0M)
2022-06-17BUYunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist4.0M¥786-¥3.1B ($20.0M)
2022-06-17BUYunknown
柳澤 大輔
DAISUKE YANAGISAWA
activist4.0M¥786-¥3.1B ($20.0M)

Frequently asked questions

Who has been buying KAYAC Inc. stock?
4 distinct investors have filed 2 disclosed large-shareholding filings in KAYAC Inc. (3904), most recently on 2025-12-08. 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 KAYAC Inc. have?
KAYAC Inc. has 2 buy-side and 10 sell-side disclosures on record, covering ¥1.2B ($8.0M) in total reported value, spanning 2022-06-17 to 2025-12-08.
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.