InsidersTradesSigma
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Browse the complete record of transactions filed by Chang Hung-Lun (Fred). Insider active across 1 company, notably Applied Optoelectronics, INC.. In total, 3 disclosures have been published. Activity tracked since 5 June 2026. The latest transaction was disclosed on 17 June 2026 (Notice of proposed sale (Form 144)). Regulator: SEC (Form 4). The full history is openly available.
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
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