research2026-04-208 minCEO 上電視到底會不會推股價?一個 selection bias 問題。factor-investingevent-studyselection-biasrklbquantitative-research
radar2026-04-171 min名錶價格能預測奢侈品股票嗎？檢驗 Morgan Stanley 的假說factor-investingalt-dataquantitative-researchluxury
research2026-04-1710 min我跑了 3,030 個統計檢定驗證「名錶-股價」假說,結果是零。factor-investingalt-dataquantitative-researchnull-findingwatch-factor