Asset Allocation and Diversification

Asset allocation—the decision to hold stocks, bonds, real estate, commodities, and cash in specific proportions—is the primary driver of long-term portfolio returns and risk. A young investor with decades until retirement can handle 90% stocks and 10% bonds. An investor three years from retirement might hold 40% stocks, 50% bonds, and 10% alternatives. Your asset allocation should change as your time horizon and risk capacity change.

Within stocks, diversification means not betting everything on one sector, company, or style. A portfolio of 5 large-cap IT stocks is not diversified; a portfolio with IT, pharma, banking, FMCG, and infrastructure exposure is. Diversification is not about avoiding losses—in downturns, most stocks fall together. It's about avoiding catastrophic losses that come from concentrated bets. If you own only one stock and it falls 50%, you're devastated. If you own 20 and one falls 50%, your portfolio is barely affected.

Over-diversification is also a trap. Owning 100 stocks means most of your portfolio is in stocks that you've barely researched. If you can only thoroughly analyze and monitor 15-20 stocks, own those 15-20 instead of spreading yourself across 100. The performance will be similar but you'll sleep better knowing your holdings.

Home country bias is common in India: investors hold too much in Indian stocks and not enough in international diversification. While India's long-term prospects are strong, holding some international exposure (via global index funds or ADRs) reduces concentration risk. A 70/30 split between India and international is reasonable for a long-term Indian investor; 100% domestic is a concentrated bet on one country's regulations, inflation, and growth.

• Asset allocation (stocks vs. bonds vs. alternatives) drives returns.
• Diversification reduces the impact of individual losses.
• Avoid over-diversification; own what you understand.
• Home country bias is common; consider international exposure.