Finlume
Smarter decisions about money — practical, evidence-based finance guides.
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Why You Can't Outrun High-Frequency Trading Algorithms
A handful of firms trade in microseconds — no retail trader can out-speed that. Why it's not about skill, and how a longer time horizon flips the game.
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The Fastest Way to Clear Credit Card Debt: 3 Strategies Compared
A card-by-card simulation of the snowball, avalanche, and consolidation methods — with the exact months and interest each strategy actually costs.
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Why Margin Investing Can Cost You More Than Your Entire Stake
Borrowing to invest amplifies gains and losses equally. The loss table by leverage, how margin calls get enforced, and the interest hurdle explained.
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The Hidden Concentration Risk in Market-Cap Weighted Index Funds
Your index fund holds hundreds of companies — but how much rides on just the top 10? Here's how to measure real concentration risk in your own fund.
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Why Beating Earnings Doesn't Always Lift the Stock
Why stocks can fall on record earnings: surprise vs. expectations, guidance, mean reversion, and how entry valuation shapes long-run returns.
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How Your Creditworthiness Changes What You Actually Pay
How creditworthiness tiers translate into rate spreads — and what that gap costs in total interest. Risk-based pricing explained with real amortization numbers.
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Bond Fund vs Individual Bonds: Which Belongs in Your Portfolio?
Individual bonds return face value at maturity; bond funds fluctuate daily. A decision framework covering duration, credit risk, and cost.
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How Much to Save for Retirement at Every Age: Milestone Benchmarks
Fidelity's income-multiple benchmarks by age (1x at 30, 3x at 40, 6x at 50, 8x at 60, 10x at 67), the assumptions behind them, and how to catch up if you're behind.
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Income Protection Insurance: Is It Worth the Premium?
Waiting periods, income replacement rates, and the short-vs-long-term coverage question — a practical framework for deciding whether income protection insurance belongs in your financial plan.
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Small-Cap vs Large-Cap: What the Historical Data Actually Shows
The small-cap premium is real in the long-run data — but it's been conspicuously absent for decades. Here's what a century of returns, Fama-French research, and recent underperformance tell long-term investors about size-based investing.
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Debt Consolidation Loan vs Balance Transfer: Which Actually Costs Less?
Don't just compare fees — compare total cost. Use the 'balance ÷ promo months' formula to decide whether a balance transfer or a consolidation loan fits your situation.
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Is Disability Insurance Worth It? A Framework for Making the Call
More than one in four 20-year-olds will be disabled for a year or more before retirement. Here's how to evaluate elimination periods, own-vs-any-occupation definitions, replacement rates, and whether you actually need a policy.
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Secured vs Unsecured Loans: When Collateral Changes the Math
Collateral can cut your interest rate in half — but it comes at a price. A practical framework for deciding which loan structure fits your actual situation.
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Dividend Payout Ratio: What the Number Tells You (and What It Doesn't)
Learn how to read the dividend payout ratio across five risk zones, why FCF payout matters more than EPS, and five early-warning signs that often precede a dividend cut.
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How Much Life Insurance Do You Actually Need? 4 Methods That Go Beyond the 10x Rule
Compare the income multiple, DIME worksheet, HLV, and needs analysis methods to calculate your personal life insurance coverage number — step by step.
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Savings Accounts, MMAs, and CDs: How to Match Your Money to the Right Account
Parking all your cash in one account looks safe — but it often means over-holding liquidity and leaving interest on the table. Here's the four-type map, APY comparison method, and three-bucket framework you need.
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ETF Tracking Error vs Tracking Difference: The Number That Really Matters
Most ETF investors only look at the expense ratio. But tracking error and tracking difference are what actually determine how much of the index's return lands in your account. Here's how to read both.
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How Much Do You Need Invested to Live Off Dividends? The Math, Laid Out
The reverse-engineering formula for dividend income targets, realistic yield assumptions (3–5%), DRIP compounding, and the yield trap danger — all pre-tax, clearly explained.
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High Yield or Dividend Growth ETF: Which One Actually Builds Wealth?
A 4% yield looks better than 1.5% — until you understand where that yield comes from. Here's how high yield and dividend growth ETFs work, why yield traps are dangerous, and how to choose based on your situation.
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ETF vs Index Fund: Same Index — Which One Should You Actually Buy?
Tracking the S&P 500 via ETF or index mutual fund gives nearly identical returns. The real decision comes down to how you invest: lump-sum flexibility vs automatic fixed contributions.