Group 1 - The core concept of "hedging" is to use opposite or alternative assets to offset risk exposure in investments [10][16]. - Hedging can be achieved through two main methods: utilizing negative correlation for asset allocation and employing positive correlation for long-short strategies [18][23]. - The difference between hedging and diversification lies in their approach to risk reduction; hedging targets specific risks while diversification spreads investments across less correlated assets [33][40]. Group 2 - "Macro" in investment refers to a broad analysis of economic indicators such as growth, interest rates, inflation, and geopolitical factors [43][46]. - Macro hedging combines macro analysis to predict future economic environments and determines asset allocation to mitigate specific risks while aiming for absolute returns [50][59]. - Current macro hedging products often incorporate both hedging and diversification strategies due to the complexity of cross-market and cross-asset portfolios [52].