「正2存股」神話:00631L 把大盤甩在身後,但那是 Alpha 還是放大的 Beta? 00631L 正2定期定額報酬驚人,但它是 alpha 還是放大的 beta?本文拆解逆價差、趨勢複利、槓桿風險與 -44.77% 回撤。
The "2x ETF as Savings" Myth: 00631L Left the Market in the Dust — Alpha, or Amplified Beta? A 00631L DCA backtest looks spectacular, but the source is amplified beta, structural roll yield, trend compounding, and serious drawdown risk.