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Stock Market Basics 100: Correlation, How to Identify Assets That Move Together and Assets That Move Differently 3-Line Summary Correlation measures how closely two assets move in relation to each other. A high correlation means assets tend to rise and fall together, while a low or negative correlation can improve diversification. Successful diversification is not about owning more investments—it is about owning investments that behave differently. Recommended Keywords correlation, correlation coefficient, portfolio management, diversification, asset allocation, risk management, beta, volatility, ETF investing, long term investing, portfolio risk, stock market basics Table of Contents What Is Correlation? Understanding Correlation Values: 1, 0, and -1 Why Correlation Matters in Diversification Why More Holdings Do Not Always Mean More Diversification Correlation Among Stocks in the Same Industry Correlation Between Stocks and Bonds How to Use Correlation in ETF Investing Why Correlatio...

  Stock Market Basics 99: Beta, How Much More (or Less) Your Investment Moves Compared to the Market 3-Line Summary Beta measures how sensitive a stock or ETF is to movements in the overall market. A beta above 1 generally means the asset tends to move more than the market, while a beta below 1 tends to move less. Beta helps investors understand market-related risk, but it does not measure business quality or investment value. Recommended Keywords beta, beta coefficient, market risk, systematic risk, volatility, portfolio management, ETF investing, asset allocation, risk management, stock market basics, long term investing, investor psychology Table of Contents What Is Beta? Why Beta Matters What a Beta of 1 Means When Beta Is Greater Than 1 When Beta Is Less Than 1 What Negative Beta Means The Difference Between Beta and Volatility Beta and Portfolio Management How to Use Beta in ETF Investing How Long-Term Investors Should View Beta The Limitations of Beta Common Mistakes Investo...

Stock Market Basics 97: Rebalancing, The Art of Maintaining Portfolio Balance 3-Line Summary Rebalancing is the process of restoring a portfolio to its original target allocation after market movements change asset weights. It involves trimming assets that have grown too large and increasing assets that have become underweighted. Rebalancing is less about maximizing returns and more about maintaining risk control and long-term discipline. Recommended Keywords rebalancing, portfolio management, asset allocation, risk management, ETF investing, long term investing, diversification, portfolio allocation, investment discipline, investor psychology, stock market basics Table of Contents What Is Rebalancing? Why Rebalancing Is Necessary Rebalancing and Investor Psychology The Relationship Between Rebalancing and Asset Allocation A Stock and Bond Rebalancing Example The Role of Rebalancing in ETF Investing How Rebalancing Affects Returns When Should Investors Rebalance? Calendar-Based vs Thre...

Stock Market Basics 96: Position Size, Why “How Much to Buy” Matters More Than Finding the Perfect Stock 3-Line Summary Position size determines how much of your portfolio is allocated to a single stock or investment idea. Even a great stock can damage a portfolio if the position is too large and the investment thesis turns out to be wrong. Investors should consider conviction, risk-reward ratio, volatility, financial stability, diversification, and emotional tolerance when deciding position size. Recommended Keywords position size, portfolio management, risk management, risk reward ratio, expected value, diversification, concentrated investing, margin of safety, long term investing, stock market basics, investor psychology Table of Contents What Is Position Size? Why Position Sizing Matters More Than Stock Selection The Relationship Between Position Size and Risk-Reward Ratio The Relationship Between Position Size and Expected Value Position Size and Loss Tolerance Should High Convict...

Stock Market Basics 94: Expected Value, How to Think About Investment Decisions Through Probability 3-Line Summary Expected value is a concept that combines possible scenarios, probabilities, and potential gains or losses to estimate the average outcome of an investment decision. In stock investing, investors should consider not only upside potential, but also downside risk and the size of possible losses. A good expected value investment is not simply a stock with large upside, but a choice with a favorable balance between probability and risk-reward. Recommended Keywords expected value, probability thinking, scenario analysis, investment decision making, risk reward ratio, margin of safety, risk management, long term investing, business valuation, PER, DCF, stock market basics, investor psychology Table of Contents What Is Expected Value? Why Expected Value Thinking Matters in Investing The Relationship Between Expected Value and Scenario Analysis Why Risk-Reward Structure Matters Mo...