Negative correlation describes a statistical relationship between two assets or variables in which they tend to move in opposite directions — when one increases in value, the other tends to decrease. A perfect negative correlation has a correlation coefficient of -1.0. In portfolio construction, combining negatively correlated assets is the most effective way to reduce overall portfolio risk through diversification — because losses in one asset are offset by gains in the other. In Indian financial markets, classic examples of negatively correlated asset pairs include: gold and equity (gold tends to rise when equity markets fall during risk-off events), long-duration government bonds and equities (in certain market regimes), and USD/INR currency and Indian equity markets (rupee depreciation often coincides with FPI outflows and equity market declines). For Indian investors, understanding correlations between asset classes — equity, debt, gold, real estate, and international stocks — is fundamental to constructing a truly diversified portfolio that performs across multiple market environments.