All Articles

How the Stock Market Works: From Your Order to the Exchange

What actually happens between pressing buy and owning a share. The order book, the matching engine, NYSE versus Nasdaq, and why the money leaves your account a day later.

6 min read

Market Makers and Liquidity: Who Is on the Other Side of Your Trade

Someone takes the other side of every trade you make, and they are paid to do it. What a market maker earns, why the spread widens when you most want to sell, and how to measure the toll.

6 min read

Stock Order Types Explained: Market, Limit, Stop and More

The order type you choose decides whether you control your price or your certainty of getting filled. You cannot have both, and picking the wrong one is expensive in predictable ways.

7 min read

Stock Market Hours: Pre-Market, the Open, the Close and After Hours

The trading day is four different markets wearing one name. What changes in each session, why the closing auction is the most important minute of the day, and where extended hours quietly costs you.

6 min read

How IPOs Work: From Private Company to Public Ticker

An IPO is a negotiated sale dressed as a market event. Who sets the price, who gets the shares, what the banks are paid, and why the first day you can buy is usually the worst one.

6 min read

Stock Market Indices Explained: S&P 500, Dow and Nasdaq

Three indices, three different rules for turning hundreds of prices into one number. Work through the weighting maths once and the daily headline stops being mysterious.

6 min read

Dark Pools, HFT and Reg NMS: Modern Market Structure Explained

The U.S. equity market is dozens of venues held together by one rule about best price. What that rule created, who profits from the seams in it, and where the safety switches sit.

6 min read

How to Choose a Broker: Fees, Execution and What Matters

The headline commission is zero at almost every US broker now, so the comparison has moved to places the marketing page does not mention. Here is where to look.

8 min read

How to Read an Earnings Report in 20 Minutes

The headline EPS is the least useful number in the release. Here is the order a desk reads a quarter in, and where the move actually comes from.

6 min read

Stock Valuation Basics: P/E, P/S, P/B, EV/EBITDA and PEG

One company, five multiples, the same numbers running through all of them, and the specific thing each ratio cannot see.

6 min read

Growth vs Value Stocks: The Difference and Why It Cycles

Two different things you can be paying for, the arithmetic that makes one of them so sensitive to interest rates, and why switching to the winner is usually late.

6 min read

Dividend Investing: Yield, Payout Ratios and Dividend Growth

What $100 arriving every quarter really depends on: the ex-dividend date, the payout ratio, the growth rate, and the warning signs that turn up before a cut.

6 min read

Stock Buybacks Explained: What They Do to Your Shares

A repurchase raises earnings per share without the business earning a dollar more. Here is the arithmetic, and the price above which it stops working for you.

6 min read

Stock Splits Explained: Forward, Reverse and What Changes

You wake up owning four times as many shares at a quarter of the price. Here is exactly what moved, what did not, and the one version that carries a real warning.

7 min read

How to Analyze a Stock: A Repeatable Checklist

Same steps, same order, every company. That is what makes the output comparable, and comparability is the only edge in this that survives a bad month.

6 min read

Market Cap Explained: Large, Mid and Small Cap Stocks

Market cap is one multiplication, and almost every index in the world is built on it. Here is the arithmetic, the size bands, and the two adjustments professionals make.

8 min read

How to Read Financial Statements: The Three You Need

Three statements, one company, one set of numbers that has to tie out. Follow the arithmetic all the way through and the gap between reported profit and real cash becomes obvious.

9 min read

Index Funds Explained: Why Owning the Market Beats Most Managers

An index fund buys the whole list and charges almost nothing for it. The reason that works is arithmetic, and the arithmetic is worth seeing written out.

6 min read

ETF vs Mutual Fund: Which Should You Own?

Same holdings, different plumbing. The differences that matter are pricing, minimums, automatic investing and the tax bill you did not choose to trigger.

6 min read

Expense Ratios Explained: What a Fund's Fee Really Costs

The fee never shows up on your statement, which is exactly why it is worth writing out in dollars. Here is what each tenth of a percent takes over a working life.

6 min read

Sector ETFs: The 11 Sectors and How to Use Them

A sector fund is an overweight on top of a portfolio that already owns every sector. Here is how to work out the weight you are actually taking, in numbers.

6 min read

Leveraged and Inverse ETFs: Why They Decay Over Time

A 3x fund promises three times the index for one day. Over a choppy week the arithmetic produces something quite different, and here it is written out day by day.

5 min read

Bond ETFs Explained: Duration, Yield and What You Actually Own

You own a rolling portfolio that is always being replaced, so there is no date when your money comes back. Duration is the number that tells you what that costs.

7 min read

REITs Explained: Property Income Without the Property

Rent, without a tenant calling you at midnight. The structure that makes the yield possible also explains the debt, the share issuance and the tax treatment.

9 min read

Mutual Funds Explained: NAV, Share Classes and Loads

The price is calculated, never quoted. Inside that daily number sit the share class, the load, the 12b-1 fee and the trading decisions of every other holder.

8 min read

Bond Yields Explained: Current Yield, YTM and Yield to Call

One bond can carry four yields at once, all of them arithmetically correct, and the one a seller shows you is rarely the one you should be planning on. Here is how each is built.

7 min read

The Yield Curve Explained: Normal, Flat, Inverted and What Each Means

One line plots the price of time. Its slope has preceded every US recession since the late 1960s, and the lag has run anywhere from six months to two years, which is a warning and not a date.

8 min read

Treasury Bills, Notes, Bonds and TIPS: A Complete Guide

Four instruments, one borrower and an auction calendar that runs whether anyone is watching or not. What bills, notes, bonds and TIPS actually pay, and how to read the result sheet.

8 min read

Duration Explained: How Much a Bond Falls When Rates Rise

Multiply modified duration by the change in yield and you have your loss to within a fraction of a percent. Here is where that number came from, what it is quietly assuming, and where it stops working.

8 min read

Corporate Bonds and Credit Spreads: Investment Grade to Junk

A corporate bond is a Treasury plus a bet on a company paying you back. The spread is the price of that bet, it moves faster than any rating agency, and the document behind it says more than the letter does.

9 min read

Municipal Bonds Explained: Tax-Free Income and Its Fine Print

A 3.40% municipal yield is worth 5.00% to an investor in a 32% bracket and 3.86% to one in a 12% bracket. The same bond, bought on the same day, is two different investments.

8 min read

TIPS Explained: Inflation-Protected Treasury Bonds

The coupon is the small half of what a TIPS pays you. The other half is added to the principal, taxed before it arrives, and handed over years later at maturity.

8 min read

Bond Ladders: Building One and What It Solves

Five bonds, five maturity dates, one decision repeated every year. A ladder spreads the reinvestment question across time so that no single morning decides your income.

8 min read

How Interest Rates Affect Stocks: Discount Rates and Duration

One percentage point on the discount rate can take a third off a fast-growing company without anything happening at the company. Here is the arithmetic, and here is where it stops explaining anything.

8 min read

Inflation and CPI Explained: Headline, Core and Reading the Release

The CPI release opens with the same two sentences every month, and everything that follows explains them. Here is how to turn an index level into a rate yourself.

8 min read

The Jobs Report Explained: Payrolls, Unemployment and Wages

Payrolls come from business records and the unemployment rate comes from households, and the Bureau of Labor Statistics is careful to say when a change is too small to call a change.

7 min read

GDP Explained: What It Measures and the Three Estimates

The man who built the national accounts told Congress in 1934 that the welfare of a nation could scarcely be inferred from them. The number has been treated as a verdict on national wellbeing ever since.

7 min read

Quantitative Easing and Tightening: The Fed's Balance Sheet

The Bank of Japan gave the policy its name in 2001 and the label unconventional stuck for a decade. Two crises later, the balance sheet is an ordinary instrument with ordinary accounting behind it.

8 min read

Recession Indicators: Yield Curve, Sahm Rule, Claims and the LEI

The committee that dates American recessions has announced a turning point more than a year after it happened. These are the measures people watch in the meantime, with the failures attached.

8 min read

The Economic Calendar: Which Releases Move Markets and When

Every month runs the same order, and a handful of entries in it account for most of the sharp intraday moves in Treasuries. Learn the sequence once and it serves for years.

7 min read

The Dollar Explained: DXY, Rates and Why It Moves Markets

The most watched dollar gauge is six currencies wide and more than half euro. Here is what it measures, what moves it, and where a rising dollar shows up in a portfolio.

8 min read

Diversification Explained: Why 30 Stocks Can Still Be One Bet

Owning thirty names feels diversified. If they rise and fall together, you own one position in thirty pieces. Correlation is the number that tells you which you have.

7 min read

Portfolio Rebalancing: When, How Often and How to Do It Cheaply

A strong year for stocks quietly turns a 60/40 portfolio into a 68/32 one. Here is the arithmetic, the two trades that fix it, and how to avoid paying tax you never needed to pay.

7 min read

Dollar-Cost Averaging vs Lump Sum: What the Evidence Says

A $500 monthly contribution through a falling and recovering market, with the average cost worked out in full, and an honest look at which approach the evidence favours.

7 min read

Measuring Portfolio Risk: Volatility, Beta, Sharpe and Drawdown

Four numbers describe how risky a portfolio is, and they disagree with each other. Here is how each one is calculated, and which one actually predicts whether you will sell.

7 min read

Tax-Efficient Investing: Account Location and Tax-Loss Harvesting

The same $10,000 gain can cost you very different amounts depending on the calendar. Here is how holding periods, account choice and fund structure change what you keep.

7 min read

Retirement Portfolio Basics: 401(k)s, IRAs and the 4% Rule

Which account to fill first, what the match is really worth, how a target-date fund changes as you age, and an honest reading of the 4 percent rule.

7 min read

401(k) Explained: Match, Vesting, Fees and Rollovers

Four things inside a workplace plan decide most of your result: the match you claim, the vesting clock, the fee on the fund menu, and what you do with the money on your last day.

9 min read

Emergency Funds: How Much, and Where to Keep It

The right number comes out of your bills, and it is personal. Here is how to work it out, what the cash costs you in expected return, and where the money can sensibly sit.

9 min read

Day Trading Explained: Rules, Costs and the Real Odds

Nothing held overnight. That one choice sets your rulebook, your annual toll and the size of edge you need before any of it is worth doing.

6 min read

Swing Trading Explained: Holding for Days to Weeks

A longer clock cuts the toll you pay to trade and hands you one risk in return: the price can move a long way while you are asleep.

6 min read

Momentum Trading: Buying Strength and Managing the Reversal

Buying what has already gone up is well documented and deeply uncomfortable. It also fails all at once, which is a sizing problem before it is an analysis problem.

6 min read

Mean Reversion Trading: Fading Extremes Without Catching Knives

This method wins most of the time, which is exactly what makes it dangerous. The losses arrive in a few trades and the expectancy decides everything.

6 min read

Trading Earnings Season: Gaps, IV Crush and the Drift

An earnings date turns an ordinary position into a binary event that your stop order cannot sit inside. Here is what the market charges for it.

6 min read

Risk Management for Traders: The 1% Rule, R Multiples and Expectancy

Lose 30 percent and you need 42.9 percent to get back. Every rule on this page exists because of that one piece of arithmetic.

7 min read

Trading Psychology: Why Traders Break Their Own Rules

Every psychological failure in trading lands in two numbers on your statement. Both of them can be defended with a rule instead of a resolution.

7 min read

Breakout Trading: Entries, False Breaks and Sizing

A break through a level is a liquidity event before it is a signal. Where you enter decides your size, and your size decides what the failures cost.

8 min read

How to Backtest a Strategy Without Fooling Yourself

A backtest measures your assumptions first and the strategy second. Six of those assumptions decide whether the curve on your screen has anything to do with an account.

9 min read

How to Read Candlestick Charts: Bodies, Wicks and Key Patterns

A candle is four prices. Every reading worth having comes from dividing those four prices by each other, and the name of the shape comes last.

7 min read

Support and Resistance: Finding the Levels That Matter

Support and resistance is the only technical tool with no formula behind it, which is exactly why it is the easiest one to fool yourself with.

7 min read

Moving Averages Explained: SMA, EMA, Crossovers and the 200-Day

A moving average is a mean you recompute daily. The formula also tells you when the line moves for reasons that have nothing to do with today's price.

6 min read

RSI, MACD and Stochastics: Momentum Indicators Explained

Three oscillators, three formulas, one column of closing prices. Build them by hand once and the redundancy between them becomes impossible to unsee.

7 min read

Volume Analysis: Confirming Moves and Spotting Exhaustion

Volume is the only series on a chart that is not derived from price. It is also the one most often described in words the arithmetic does not support.

6 min read

Chart Patterns: Head and Shoulders, Double Tops, Triangles, Flags

A pattern is tradeable once you can state its break level, its projection and the price that kills it. Those three numbers are geometry, and they need no statistics.

8 min read

Bollinger Bands, ATR and Keltner Channels Explained

Price cannot tell you how far a stock usually travels in a day. That missing dimension is the whole job of a volatility indicator, and both calculations are short.

8 min read

Fibonacci Retracements: The Levels and the Evidence

Four of the five standard levels are powers of 0.618. The fifth belongs to a different tradition entirely, and your choice of swing moves every line on the chart.

10 min read

VWAP Explained: The Benchmark Institutions Trade Against

VWAP is one division: dollars traded divided by shares traded. The denominator only ever grows, which is why the afternoon line is so hard to move.

9 min read

Option Greeks Explained: Delta, Gamma, Theta, Vega and Rho

Delta, gamma, theta, vega and rho are sensitivities, and each one turns into dollars when you multiply by 100. One contract, five numbers, all of them worked.

7 min read

Implied Volatility Explained: IV, IV Rank and the Earnings Crush

IV is solved backwards out of the option price rather than measured from history. Here is the arithmetic that turns a percentage into an expected dollar move.

7 min read

Covered Calls: How to Earn Income on Stocks You Already Own

A covered call converts unknown upside into a known premium. Here is the static return, the if called return, and the payoff at every expiry price.

7 min read

Cash-Secured Puts: Getting Paid to Wait for Your Price

Selling a put collects premium for agreeing to buy 100 shares at your strike. Here is the return on the cash you tie up, and the loss the arithmetic allows.

7 min read

Vertical Spreads Explained: Bull Call, Bear Put, Credit and Debit

A vertical spread caps both ends of the payoff for a known cost. Here are all four, with the arithmetic that fixes the maximum profit and loss before you trade.

8 min read

Iron Condors and Strangles: Trading a Range

Both structures get paid when a stock goes nowhere. Here is the credit, the defined and undefined loss, and the expected value arithmetic sellers skip.

7 min read

Futures Trading Basics: Contracts, Margin, Contango and the E-mini

Futures are sized by a multiplier rather than by share count. Here is the tick arithmetic, the leverage it creates, and where contango takes money from holders.

7 min read

Options Expiration and Assignment: What Actually Happens

Expiration runs on published rules that nobody reads until a share position appears on Saturday. Here is the sequence, with the arithmetic that decides each step.

8 min read

Protective Puts and Collars: Paying to Cap Your Downside

A put turns an open ended loss into a known one for cash paid up front. Here is the annualised price of that floor, and what selling a call to fund it really costs.

9 min read

Factor Investing: Value, Momentum, Quality, Size and Low Volatility

A factor is a rule for sorting stocks and a return series attached to that rule. Here are the formulas, one worked attribution, and an honest account of how long the bad stretches run.

8 min read

Volatility and the VIX: What It Measures and How It Is Traded

VIX 20 is a statement about a 5.8 percent move over the next month. Turning that statement into a position runs through futures, roll yield and a product that once lost almost everything overnight.

7 min read

Options Flow, the Put/Call Ratio and Gamma Exposure

A large options print tells you less than the alert says it does. Dealer hedging flows tell you more, and they can be computed from open interest with one line of arithmetic.

6 min read

The Kelly Criterion and Position Sizing Beyond the 1% Rule

Kelly answers a question the 1 percent rule never asks: given an edge, what fraction of capital maximizes long run growth? The answer is computable, and it is almost always too large to use.

7 min read

Pairs Trading and Statistical Arbitrage

A pair trade is a bet that a computed spread reverts. Here is the regression that gives you the hedge ratio, the z-score that gives you the entry, and the reasons the relationship stops holding.

7 min read

Macro Regimes: Growth, Inflation and What Works in Each Quadrant

Two variables, four boxes. The framework is old, the historical record behind it is thinner than it looks, and its main value is telling you which risk your portfolio is quietly concentrated in.

8 min read

Fed Funds Futures and the Dot Plot: Reading What the Market Expects

The market's expected rate path is a published number you can compute yourself from futures prices. The committee's own projection is a different number, and the gap between them is tradeable.

8 min read

Short Selling Explained: Borrow, Locate, Squeeze and Unlimited Risk

Selling something you do not own involves a lender, a locate, a fee that accrues daily and a loss profile with no upper bound. Here is every piece of it with the numbers attached.

7 min read

Earnings Quality: Accruals, Cash Flow Gaps and Accounting Red Flags

Reported profit is an opinion expressed in a number. Cash is a fact. The distance between the two is measurable, and it has been one of the more durable predictors of disappointment.

7 min read