Diversification

FundamentalGeneral Investing2 min read

Quick Definition

Spreading investments across various assets, sectors, and geographies to reduce risk without sacrificing expected returns.

What Is Diversification?

Diversification is the investment strategy of spreading money across different investments to reduce risk. Often called "not putting all your eggs in one basket," it's a fundamental principle of sound investing.

Why Diversification Works:

  • Different assets perform differently at different times
  • Losses in one area can be offset by gains in another
  • Reduces portfolio volatility
  • Protects against catastrophic losses

Levels of Diversification:

  1. Across Asset Classes:

    • Stocks, bonds, real estate, commodities
    • Each responds differently to economic conditions
  2. Within Asset Classes:

    • Different sectors (tech, healthcare, finance)
    • Different company sizes (large, mid, small cap)
    • Growth vs. value stocks
  3. Geographic Diversification:

    • US, developed international, emerging markets
    • Different economies, currencies, growth rates
  4. Time Diversification:

    • Investing over time (dollar-cost averaging)
    • Reduces timing risk

Correlation:

  • Correlation of +1: Assets move together perfectly
  • Correlation of -1: Assets move opposite
  • Correlation of 0: No relationship
  • Goal: Combine assets with low or negative correlation

Limits of Diversification:

  • Can't eliminate systematic (market) risk
  • Over-diversification can reduce returns
  • In market crashes, correlations often increase