From: Energy crypto currencies and leading U.S. energy stock prices: are Fibonacci retracements profitable?
Position
Uptrend
Downtrend
Long
\(Price_{t - 1} < 23.6\% retracement < Price_{t}\)
\(Price_{t - 1} < 61.8\% retracement < Price_{t}\)
Short
\(Price_{t} < 61.8\% retracement < Price_{t - 1}\)
\(Price_{t} < 23.6\% retracement < Price_{t - 1}\)