Track the 成友興業株式会社 share price and the full directors' dealings record of the company, a listed equity based in Japan. Shares are quoted on the JP market, under the oversight of EDINET (Japan FSA). The latest transaction was filed on 28 August 2026 (Holding update). Among the most active insiders: Yamazaki Gravel Inc.. The full history is openly available.
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Insider Decl.
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Thresholds
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Buy Volume
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Sell Volume
14Σ signal
This score ranks the purchase within its own market. No market currently meets the historical allocation criteria, so signals remain watch-only. Not investment advice.
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Sigma AI Analysis
Fundamental view, insider signal, bull and bear case, synthesis.