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TESEC Corporation 6337

Company
株式会社テセックTESEC Corporation
Investors
5
Buys
3
Total Value
¥1.3B ($8.5M)
Avg Return
+19.51%
Last Filing
2026-01-22

TESEC Corporation (6337) has 3 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥1.3B ($8.5M) in reported transaction value. The earliest filing StockDrifts holds for TESEC Corporation is dated 2023-06-16; the most recent is 2026-01-22. 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 +19.51%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-06-19SELLunknown
田中 綏子
Tanaka Yasuko
strategic274.2K¥2,604+15.6%¥163M ($1.0M)
2026-06-08BUYunknown
田中 綏子
Tanaka Yasuko
strategic336.9K¥2,507-0.2%¥161M ($1.0M)
2026-06-08SELLunknown
田中 綏子
Tanaka Yasuko
strategic336.9K¥2,507+0.2%¥161M ($1.0M)
2026-01-22BUYnegotiated
みずほ信託銀行株式会社
other150.0K¥2,456-11.2%¥410M ($2.6M)
2026-01-22SELLnegotiated
みずほ証券 株式会社
strategic57.0K¥2,456-11.2%¥156M ($1.0M)
2025-11-21BUYnegotiated
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other150.0K¥1,978+38.0%¥297M ($1.9M)
2025-11-21BUYnegotiated
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic186.9K¥1,978+38.0%¥370M ($2.4M)
2023-09-22SELLunknown
大和アセットマネジメント株式会社
Daiwa Asset Management Co.Ltd.
other245.2K¥2,930+6.8%¥190M ($1.2M)
2023-09-12SELLunknown
村井 昭
murai akira
strategic276.6K¥3,155+13.5%¥222M ($1.4M)
2023-08-04BUYunknown
大和アセットマネジメント株式会社
Daiwa Asset Management Co.Ltd.
other310.0K¥3,310-17.5%¥1.0B ($6.6M)
2023-06-16SELLunknown
田中 綏子
TanakaYasuko
strategic401.0K¥2,604-4.8%¥215M ($1.4M)
2023-06-16BUYunknown
田中 綏子
TanakaYasuko
strategic401.0K¥2,604+4.8%¥214M ($1.4M)

Frequently asked questions

Who has been buying TESEC Corporation stock?
5 distinct investors have filed 3 disclosed large-shareholding filings in TESEC Corporation (6337), most recently on 2026-01-22. 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 TESEC Corporation have?
TESEC Corporation has 3 buy-side and 4 sell-side disclosures on record, covering ¥1.3B ($8.5M) in total reported value, spanning 2023-06-16 to 2026-01-22.
Where does StockDrifts get TESEC Corporation 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 TESEC Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.