Sentiment indices measure the overall attitude or sentiment of traders and investors towards a particular market or asset. In Forex, sentiment indices are used to gauge market sentiment and make informed trading decisions. Types of Sentiment Indices: 1. *Bullish/Bearish Sentiment Index*: Measures the percentage of traders who are bullish or bearish on a particular currency pair. 2. *Positioning Index*: Tracks the net positioning of traders, including long and short positions. 3. *Open Interest Index*: Measures the total number of outstanding contracts in a particular market. 4. *CoT (Commitment of Traders) Index*: Reports the positioning of commercial and non-commercial traders in the futures market. Sources of Sentiment Indices: 1. *CFTC (Commodity Futures Trading Commission)*: Publishes the CoT report. 2. *FXCM (Forex Capital Markets)*: Offers a Speculative Sentiment Index. 3. *IG Group*: Provides a Client Sentiment Index. 4. *Bloomberg*: Offers various sentiment indices, including the Bloomberg Sentiment Index.