金融小知識：什麼是 RSI (相對強弱指數)？

原文出自 ForexNews.com 的「今日問答 (Question and Answer of the Day)」專欄。今天的主題是《What Is RSI?》，特別記錄下來供日後參考。

What Is RSI?

什麼是 RSI (「相對強弱指數」或「相對強弱指標」)？

The RSI or Relative Strength Index is a momentum oscillator that measures the speed and change of price movements.

RSI 或相對強弱指數 (Relative Strength Index) 是一種動量擺動指標 (Momentum Oscillator)，可以衡量價格移動的速度和變化。

RSI oscillates between 0 and 100.

RSI 擺動指標介於 0 到 100 之間。

Traditionally RSI is considered overbought when above 70 and oversold when below 30.

一般而言，RSI 高於 70 被視為超買，低於 30 則被視為超賣。

Signals can also be generated by looking for divergences, failure swings and centerline crossovers.

訊號也可以透過尋找背離 (Divergence)、失敗擺動 (Failure Swing) 及中心線交叉 (Centerline Crossover) 產生。

RSI can also be used to identify the general trend.

RSI 也可以用來識別一般趨勢。