Apprendre à investir avec le momentum
Lisez des guides en langage simple sur l’investissement momentum, les classements d’actions, le backtesting, la gestion du risque et les méthodes de recherche systématiques.
La bibliothèque Learn d’AIBROKER est un guide gratuit, en langage clair, pour l’investissement systématique. Nous couvrons les fondements académiques du momentum, de la valeur, de la qualité et du trend-following ; les mécanismes pratiques pour construire un portefeuille ; et les pièges comportementaux qui font dérailler la plupart des investisseurs particuliers.
Les articles sont rédigés par des chercheurs quantitatifs, relus selon nos standards éditoriaux, et mis à jour lorsque les données ou les preuves sous-jacentes évoluent. Chaque affirmation qui dépend de la recherche académique est sourcée.
Par où commencer
- Comment AIBROKER classe les actions — la méthodologie complète en une seule page.
- Glossaire d’investissement — chaque terme que nous utilisons, défini en anglais simple.
- Analyses de marché — récapitulatifs hebdomadaires et recherches quantitatives originales.
Catégories que nous couvrons
- Débuter en investissement — les bases absolues, sans supposer de connaissances préalables.
- Fondamentaux de l’investissement — comment les actions, les ETF, les dividendes et les options fonctionnent réellement.
- Concepts quantitatifs — Sharpe, Sortino, Calmar, détection de régime, décomposition des facteurs.
- Stratégie de portefeuille — allocation, rééquilibrage, techniques tenant compte de la fiscalité, trajectoires d’investissement.
- Compétences pratiques — lire un 10-K, rédiger une déclaration de politique d’investissement, processus de revue mensuels.
- Mécanismes de marché — coupe-circuits, OPEX, fractionnements d’actions, suspensions.
- Day trading — exécution, règles PDT, slippage, statut fiscal du trader.
- Trading automatisé — récolte des pertes fiscales en mode automatique, arbitrages liés à l’automatisation.
- Investissement régional — NISA, ISA, PEA, Assurance Vie, Planes de Pensiones, et plus encore.
Catégories que nous couvrons
- Débuter en investissement — les bases absolues, sans supposer de connaissances préalables.
- Fondamentaux de l’investissement — comment les actions, les ETF, les dividendes et les options fonctionnent réellement.
- Concepts quantitatifs — Sharpe, Sortino, Calmar, détection de régime, décomposition des facteurs.
- Stratégie de portefeuille — allocation, rééquilibrage, techniques tenant compte de la fiscalité, trajectoires d’investissement.
- Compétences pratiques — lire un 10-K, rédiger une déclaration de politique d’investissement, processus d’examen mensuels.
- Mécanismes de marché — coupe-circuits, OPEX, fractionnements d’actions, suspensions.
- Day trading — exécution, règles PDT, slippage, statut fiscal du trader.
- Trading automatisé — récolte des pertes fiscales en mode automatique, arbitrages liés à l’automatisation.
- Investissement régional — NISA, ISA, PEA, Assurance Vie, Planes de Pensiones, et plus encore.
Complete Learn article index
Browse the full educational library by category, including every published guide, explainer, and research note.
Day Trading
- Day Trading by the Numbers: What the Statistics Actually Show 9 min
- From Discretionary to Systematic: What the Evidence Supports 10 min
- Scalping vs. Swing Trading vs. Position Trading: Choosing Your Time Horizon 14 min
- Slippage and the Real Cost of Orders in Thinly Traded Stocks 14 min
- Stop-Losses and Trailing Stops: Evidence vs. Intuition 14 min
- Technical Analysis Basics: Support, Resistance, and What the Charts Actually Tell You 14 min
- The Pattern Day Trader Rule and the Hidden Costs of Frequent Trading 9 min
- The Pattern Day Trader Rule Changed: What Applies During the 2026-27 Transition 16 min
- The Psychology of Losing Streaks: Why Investors Abandon Good Strategies 14 min
- US Active-Trader Tax: Prove Status Before Electing Section 475(f) 16 min
Investing Fundamentals
- Asset Allocation and Security Selection: What Each Decision Controls 18 min
- Bonds Explained: How They Work, What They Pay, and When They Lose Money 14 min
- Compound Growth Is Not Magic — Here's the Actual Formula 10 min
- Compound Return Audit: Why Your Portfolio Differs From the Calculator 15 min
- Crypto as an Asset Class: What Portfolio Theory Actually Says 14 min
- Dividend Investing: What the Total Return Data Actually Shows 13 min
- How AI Is Used in Stock Analysis in 2026: What Works, What Doesn’t, and Where Humans Still Matter 14 min
- How to Research Stocks Using Data Instead of Opinion 14 min
- Inflation and Real Returns: How to Calculate What You Actually Made 14 min
- Lump Sum and Cost Averaging: Which Cash-Flow Problem Are You Solving? 19 min
- Quant Investing for Retail Investors: A Practical Guide 14 min
- REITs and Real Estate Investing: What the Returns Actually Look Like 14 min
- Risk Isn't a Feeling — Here's How Professionals Measure It 8 min
- Small-Cap vs. Large-Cap: The Size Premium in the 2020s 16 min
- Stock buybacks can lift per-share numbers — but only if the business is worth more than the price paid 8 min
- Tax-Efficient Retirement Withdrawals: Coordinate Taxes, Benefits, and Market Risk 16 min
- Understanding Fees: The Small Percentages That Quietly Eat Big Returns 14 min
- What Is an AI Broker? How AI Is Changing Stock Research 14 min
- What Is an Index Fund and How Does It Actually Work? 13 min
- What Is Momentum Investing? A Beginner’s Guide to Relative Strength, Historical Evidence, and the Real Risks 14 min
- Why Dollar-Cost Averaging Beats Timing — With the Math to Prove It 7 min
Market Mechanics
- After-Hours and Pre-Market Trading: Rules, Risks, and When It Makes Sense 15 min
- Circuit Breakers and LULD: What Happens When a Stock or the Whole Market Halts 8 min
- Circuit Breakers, LULD, and Trading Halts: Rules and Execution Risk 18 min
- Economic Indicators Every Investor Should Know 14 min
- How a Stock Price Is Actually Set: The Mechanics of Price Discovery 8 min
- How a Stock Split Actually Works: Mechanics, Myths, and Measurable Effects 8 min
- How Earnings Announcements Move Stocks: What the Data Shows 12 min
- Liquidity: Why It Matters More Than You Think 14 min
- Market and Limit Orders: Price, Fill Probability, and Execution Cost 18 min
- Option Expiration: Why the Third Friday Matters—and What It Cannot Predict 17 min
- Options Basics: Calls, Puts, and Why Retail Trades Can Lose 16 min
- The Bid-Ask Spread: A Hidden Tax on Every Trade 8 min
- Transaction Costs and Slippage: The Hidden Drag on Returns 14 min
- Understanding Margin: Leverage, Liquidation, and the Math That Matters 14 min
- What Happens After You Press Buy: The Life of a Trade 14 min
New To Investing
- Emergency Funds and Debt: What to Handle Before You Start Investing 14 min
- Expense Ratios Are Only the First Fee: The Four Costs That Can Eat a Portfolio 8 min
- How Much Should You Invest? A Framework for Every Income Level 14 min
- How the Stock Market Works: A Beginner’s Guide to the Marketplace Behind the Headlines 14 min
- How to Read Your Brokerage Statement Without Getting Overwhelmed 14 min
- How to Set Financial Goals Before You Invest a Single Dollar 14 min
- Investment Accounts Explained: Taxable, IRA, Roth, 401(k), HSA, and 529 — A Practical Guide for U.S. Investors 14 min
- Reading Financial News Without Panicking: A Beginner’s Filter 14 min
- Risk and Return: The Tradeoff Every Investor Must Understand 14 min
- Stocks vs ETFs for Absolute Beginners: The Simplest Way to Choose Your First Investment 14 min
- Stocks vs. Bonds vs. Cash: What Belongs in Your Portfolio? 14 min
- Ten Mistakes New Investors Make — and the Simple Fixes That Save Real Money 14 min
- The Power of Starting Early: Why Time Beats Almost Everything in Investing 14 min
- What a Mutual Fund Prospectus Tells You—and What to Weight Less 17 min
- What Is a Brokerage Account and How Do You Open One? 13 min
- What Is a Stock—and Why Companies Issue Them 14 min
- What Is an ETF? How Exchange-Traded Funds Actually Work 14 min
- What Is Diversification? A Plain-Language Guide With Real Examples 14 min
- What Is Investing? A Teen-Friendly Step-by-Step Guide to Stocks, FX, and Crypto 14 min
- Your First Investment: A Step-by-Step Walkthrough 14 min
- Your First Year of Investing: A Flexible Monthly Process 18 min
Portfolio Strategy
- Active vs. Passive Investing: What Thirty Years of Data Shows 14 min
- Correlation and Diversification: Why “Don’t Put All Your Eggs” Is Incomplete 14 min
- Drawdowns Matter More Than Returns: The Risk Metric Investors Ignore at Their Own Expense 14 min
- Factor Tilts Inside a Core-Satellite Portfolio: How to Size the Satellite Without Hijacking the Core 8 min
- How to Build a Cash Allocation Rule That Survives Bull Markets, Bear Markets, and Inflation 8 min
- How to Build a Dividend Reinvestment Policy That Doesn’t Sabotage Your Asset Allocation 8 min
- How to Build a Portfolio Concentration Limit That Keeps One Position From Wrecking Your Plan 8 min
- How to Build a Portfolio Correlation Budget That Prevents Hidden Concentration 8 min
- How to Build a Portfolio Drawdown Budget That You Can Actually Live With 8 min
- How to Build a Portfolio Liquidity Ladder for Emergencies, Rebalancing, and Opportunity Cash 8 min
- How to Build a Portfolio Liquidity Plan for Recessions, Job Loss, and Forced Selling 8 min
- How to Build a Portfolio Liquidity Stress Test for Job Loss, Market Gaps, and Forced Selling 8 min
- How to Build a Portfolio Liquidity Waterfall for Market Crashes, Job Loss, and Big Life Expenses 8 min
- How to Build a Portfolio Rebalancing Threshold That Balances Taxes, Drift, and Trading Costs 8 min
- How to Build a Portfolio Risk Budget That Tells You When to Add, Trim, or Hold 8 min
- How to Build a Portfolio Stress Test That Actually Changes Decisions 8 min
- How to Build a Portfolio Withdrawal Guardrail That Prevents Sequence-of-Returns Blowups 8 min
- How to Build a Rebalancing Calendar That Cuts Taxes, Drift, and Decision Fatigue 8 min
- How to Build a Rebalancing Policy That Cuts Taxes, Trading Costs, and Bad Decisions 8 min
- How to Build a Tax-Efficient Asset Location Plan Across Taxable, IRA, and Roth Accounts 8 min
- How to Build a Tax-Efficient Withdrawal Order for Early Retirement and Market Downturns 8 min
- How to Size a Position When You Don’t Know Your Edge 8 min
- International Diversification: Does It Still Work? 14 min
- Position Sizing: How Much to Bet on Each Trade 14 min
- Rebalancing: The Discipline That Quietly Compounds Your Edge 14 min
- Retirement Glide Paths: Fund the Liability, Not the Birthday 16 min
- Sector Rotation Using Momentum Rankings: How to Read Leadership Without Chasing the Hottest Theme 14 min
- Sharpe Ratio vs. Calmar Ratio: Choosing the Right Measure 7 min
- Systematic vs. Discretionary: Why Rules Beat Gut Feelings 7 min
- Tail Risk and Black Swans: Preparing Your Portfolio for Extreme Events 16 min
- The 60/40 Portfolio: Dead, Dying, or Just Misunderstood? 14 min
- The Benchmarking Problem: How to Know If Your Strategy Is Actually Good 14 min
- The Only Three Numbers That Matter in Your Portfolio 7 min
- The Rebalancing Bonus: Myth, Math, and When It Actually Helps 14 min
- Volatility Targeting Research: How to Size Stock Positions by Risk, Not Just Rank 14 min
- When to Use Cash, Individual Bonds, or a Short-Duration Bond ETF 16 min
Practical Skills
- A Sustainable Monthly Portfolio Review Without Spreadsheet Sprawl 16 min
- Dollar-Cost Averaging vs. Lump-Sum: What Vanguard’s Research Actually Shows and When Each Wins 8 min
- ETFs vs. Mutual Funds: The Decision Framework Most People Get Wrong 7 min
- Free Stock Screener vs. Paid: What You Actually Get 14 min
- How to Build a Simple Three-Fund Portfolio 14 min
- How to Build a Trading Journal That Actually Improves Performance 8 min
- How to Build a Trading Plan That Survives Bad Days, Bad Markets, and Bad Behavior 8 min
- How to Build a Watchlist Scoring Model That Beats Pure Gut Feel 8 min
- How to Build a Watchlist That Improves Decision Quality 8 min
- How to Build an Investment Checklist That Stops Bad Buys Before You Click Purchase 8 min
- How to Evaluate a Broker: Fees, Execution Quality, and What Actually Matters 14 min
- How to Read a 10-K in 30 Minutes: A Repeatable Checklist for Long-Term Investors 8 min
- How to Read a Fund Fact Sheet Without Getting Misled 10 min
- How to Read a Momentum Screener Without Fooling Yourself 14 min
- How to Read a Stock Chart Without Fooling Yourself 14 min
- How to Read an Earnings Report Without an Accounting Degree 14 min
- How to Use Stock Rankings in Your Research: A Practical Guide 14 min
- How to Verify Stock Rankings With Cryptographic Hashes 14 min
- Order Types Explained: When a Market Order Costs You Money 10 min
- Rebalancing a Taxable Account Without Ignoring Risk or Tax 14 min
- Setting Up Automatic Investing: Remove Yourself From the Equation 14 min
- Tax-Loss Harvesting: The Tax Alpha Most Investors Misunderstand 14 min
- Turnover, Taxes, and the Real Cost of Active Management 14 min
- When to Sell: A Decision Framework for Long-Term Investors 15 min
- Write an Investment Policy Statement You Can Actually Govern 18 min
Quantitative Concepts
- AI Stock Rankings vs. Human Analysts: Which Signal Holds Up Better? 14 min
- Backtesting Pitfalls Beyond Overfitting: The Biases That Quietly Inflate Strategy Returns 14 min
- Daily Stock Rankings: How They Work, Why They Change, and What Makes Them Credible 14 min
- Equal-Weight Versus Cap-Weight Indices: Exposures, Rebalancing, and Costs 17 min
- Factor Investing Beyond Momentum: What Still Works in Value, Quality, Size, and Low Volatility 15 min
- Global Momentum: How the Nikkei 225, FTSE 100, STOXX 600, and S&P 500 Compare 15 min
- How Stock Rankings Are Calculated: The Quantitative Approach 14 min
- How to Build a Portfolio Correlation Matrix That Actually Changes Your Allocation Decisions 8 min
- How to Build a Portfolio Correlation Stress Test for Inflation, Recession, and Rate Shocks 8 min
- How to Estimate Your Expected Return Without Fooling Yourself 8 min
- Mean Reversion vs. Trend Following: Two Frameworks, One Market 17 min
- Momentum Factor Returns: 100 Years of Data, What the Record Really Says 16 min
- Momentum vs. Value Investing: Which Performs Better? 14 min
- Monte Carlo Simulation: Stress-Testing Your Portfolio Without Guessing 14 min
- NASDAQ 100 Momentum Rankings Explained: Why Tech-Heavy Stocks Often Dominate—and How to Read the Rotation 16 min
- Overfitting: Why More Parameters Can Mean Worse Predictions 16 min
- Point-in-Time Backtesting: Why It Matters for Ranking Credibility 14 min
- Regime Detection: How Quants Know When the Market Has Changed 9 min
- Regime Detection: Measurement, Uncertainty, and Allocation Use 14 min
- S&P 500 Momentum Rankings: How to Use Them in Your Research 14 min
- Sector Rotation Strategies: What Works, What Doesn't 16 min
- Sharpe, Sortino, or Calmar: Match the Metric to the Failure Mode 14 min
- Stock Market Regime Detection: How the Empirical Regime Model Works 18 min
- Survivorship Bias Makes Market History Look Safer Than It Was 8 min
- Survivorship Bias: The Silent Killer of Backtest Results 7 min
- The Best Momentum Indicators for Stock Selection: What Actually Matters, and Why Simple Charts Aren’t Enough 14 min
- The Complete Guide to Momentum Stock Rankings 16 min
- The Momentum Premium: What the Data Actually Shows 8 min
- The Role of Machine Learning in Modern Stock Screeners 14 min
- Value Investing in a Quantitative World: Can You Still Buy Cheap and Win? 14 min
- Volatility: What It Is, How It’s Measured, and Why Strategies Use It 16 min
- Walk-Forward Analysis: The Gold Standard for Strategy Validation 18 min
- What Your Backtest Isn't Telling You: A Practitioner's Checklist 8 min
- Why Quantitative Models Usually Beat Sentiment Analysis in Stock Research 14 min
Regional Investing
- Assurance vie in France: the wrapper that does two jobs at once 8 min
- Building a Spanish Portfolio Beyond the IBEX 35 8 min
- iDeCo vs. NISA vs. Taxable Accounts in Japan: A Tax-Efficient Investment Stack 6 min
- Investing in Japanese ETFs: How TOPIX, Nikkei 225, and the Tokyo Stock Exchange Actually Fit Together 8 min
- Investing on Euronext Paris: CAC 40, ETFs, PEA, and Global Diversification 14 min
- Investing on the London Stock Exchange: ETFs, Investment Trusts, AIM, and Costs 14 min
- ISAs Decoded: How to Use Your £20,000 Annual Allowance for Maximum Tax-Free Growth 14 min
- NISA Accounts Explained: Japan’s Tax-Free Investment Wrapper and How to Maximise It 14 min
- PEA: France’s Tax-Efficient Stock Wrapper and How to Build a Portfolio Inside It 14 min
- Planes de Pensiones and Tax-Advantaged Investing in Spain: What Every Spanish Investor Should Know 14 min
- SIPP and Workplace Pensions: How UK Retirement Investing Actually Fits Together 8 min
- Spain's Traspaso Rule: Tax Deferral, Eligibility, and Costs 16 min
Robo Trading
- Algorithmic Trading Explained: From Signal to Execution 15 min
- Automated Tax-Loss Harvesting: Prove the Household-Level Benefit 14 min
- Building Your First Systematic Strategy: A Step-by-Step Framework 14 min
- How to Evaluate a Trading Bot: The Due Diligence Checklist 14 min
- Paper Trading: How to Test a Strategy Without Risking Real Money 16 min
- Risk Controls in Automated Trading: Kill Switches, Position Limits, and Circuit Breakers 14 min
- What Is a Robo-Advisor? How Algorithms Manage Your Portfolio 14 min