The technical indicator Will-Spread was developed by Larry Williams and described in his book Long-Term Secrets to Short-Term Trading. Will-Spread is one of the strongest financial indicators, which measures the flow of price between the primary market and a secondary market. The purpose of this comparison is to highlight signals for opening/closing positions of a financial asset through market signals that have influence on this particular asset.

The main method of using Will-Spread is watching the way it crossing the zero line. If the indicator crosses the zero line upward, rising trend is likely to continue. When the indicator falls below the zero line, there is an obvious downtrend.

The author offered to use the indicator in trading from the standpoint of a filter: when Will-Spread crosses the zero line, a trader should wait for the formation of the bar that follows after the signal. In case the new bar generates a high/low above/below the previous one, a trader should open position. It is not recommended to open position if the bar does not form a new high/low.

The main condition for calculating Will-Spread is the choice of a financial asset that is the most influential for a currency pair. The most common assets of adjacent markets are GOLD, oil (#CL), S&P-500 index (#SPX), and Nikkei-225 index (#N225). Gold and oil can be easily used for major Forex currency pairs, while stock indices perform better in generating leading signals for such currency pairs as the USD/CHF and the USD/JPY.