Omega Ratio Explained: Formula, Worked Example, and the Omega Curve
The Omega ratio explained: the gains-over-losses formula, a plain-number worked example, how to read the Omega curve, and why it catches skew that Sharpe misses.
9 min readAll posts
High Yield Spread: How to Read Credit Spreads as a Stock Signal
The high yield spread is the extra yield junk bonds pay over Treasuries. How to read its level, its rate of change, and why equity traders watch it.
7 min readRSI Range Shift: Bull and Bear RSI Ranges Explained
How the RSI range shift works: why RSI holds 40–80 in uptrends and 20–60 in downtrends, how to classify the regime, and a worked example with numbers.
9 min readStochastic RSI: Formula, Settings and How to Read It
How the stochastic RSI works: the StochRSI formula, what 14, 14, 3, 3 means, a worked example, and why an oversold StochRSI is not an oversold stock.
8 min readHistorical Volatility Formula: How to Calculate It Step by Step
The historical volatility formula explained: log returns, standard deviation, annualizing with √252, a plain-number worked example, EWMA and range estimators.
8 min readMarket Crash Indicators: Which Warning Signs Actually Lead
Market crash indicators ranked by what they measure and when they fire — breadth, credit, volatility, leverage and the yield curve — plus a dashboard you can score.
8 min readStochastic Oscillator: Formula, Settings and How to Read It
How the stochastic oscillator works: the %K and %D formula, fast vs slow vs full settings, a worked example, and the trend filter that keeps signals honest.
8 min readSupertrend Indicator: Formula, Settings and How to Read It
How the Supertrend indicator works: the ATR band formula, the 10/3 default settings, flip signals, and a worked example with exact band levels.
9 min readVolatility Targeting: Formula, Worked Example and Pitfalls
Volatility targeting explained: the exposure formula, how to estimate realized vol, a plain-number worked example, what the research says, and where the rule breaks.
7 min readHerfindahl Index in the Stock Market: Effective Number of Stocks
The Herfindahl index turns index weights into one concentration number. Learn the formula, the effective number of stocks, and how to read a dot-com-peak comparison.
8 min readBullish Percent Index: Formula, Signals and How to Read It
The bullish percent index counts the share of stocks on point-and-figure buy signals. Learn the formula, the six BPI signals, and how to read a record high with it.
9 min readJanuary Effect: Does the Small-Cap January Bounce Still Work?
The January effect says small caps and beaten-down stocks bounce in early January. What the data show, why the edge faded, and how to test what is left.
11 min readMarket Neutral Strategy: How to Build One That Is Actually Neutral
What a market neutral strategy is, how dollar-neutral, beta-neutral and factor-neutral books differ, and how to measure whether your long/short book is really hedged.
10 min readRelative Strength vs RSI: How to Read a Relative Strength Line
Relative strength vs RSI explained: one compares a stock to the market, the other compares it to itself. How to build and read an RS line, with a worked example.
9 min readOctober Effect: Is October Really the Crash Month for Stocks?
The October effect says October is the stock market's crash month. What S&P 500 data since 1928 actually show, why October is a volatility story, and how to size for it.
10 min readAlpha Decay: How to Know When a Trading Strategy Stops Working
Alpha decay explained: why trading edges erode, and a rolling-expectancy and drawdown test for deciding when a strategy has stopped working.
9 min readUp/Down Volume Line: How to Read Volume Breadth and 90% Down Days
How to build the up/down volume line, calculate a Lowry-style 90% down day, and use volume breadth to tell a liquidation from an orderly selloff.
10 min readConnorsRSI Explained: Formula, Settings, and a Worked Example
Connors RSI explained: the three-part ConnorsRSI formula, oversold and overbought thresholds, a worked example in plain numbers, and how it differs from RSI-2.
10 min readSortino Ratio: How to Measure Downside Risk (Formula + Example)
The Sortino ratio explained: the downside-deviation formula, a plain-number worked example, how it differs from the Sharpe ratio, and the mistakes that make it lie.
9 min readRSI-2 Strategy: Connors' Rules, Settings, and a Worked Example
The RSI-2 strategy explained: Larry Connors' exact entry and exit rules, why the 2-period setting works, a worked example, and where the edge has decayed.
8 min readBreadth Divergence: How to Spot a Rally Losing Participation
What a breadth divergence is, how to confirm one across the A/D line, percent above 200-day and net new highs, and how long the warning typically leads.
7 min readStock-Bond Correlation: How to Measure It and Why It Flips
Stock-bond correlation decides whether your bond sleeve is a hedge or dead weight. How to measure it, why the sign flips, and what 2022 taught allocators.
8 min readCrack Spread Explained: How to Calculate the Refiner Margin
What the crack spread is, how to calculate a 3-2-1 crack spread step by step, and how traders read refiner margins for signals.
8 min readADX Indicator: How to Read Trend Strength Before You Trade It
How the ADX indicator measures trend strength: the DI+/DI− math, the 20–25 threshold, a worked example, and the mistakes that misread it as direction.
8 min readParabolic SAR Explained: Formula, Settings, and How to Use It
How parabolic SAR works: Wilder's formula with the acceleration factor, the 0.02/0.20 settings, a worked example, and when stop-and-reverse logic fails.
8 min readCointegration in Trading: Correlation vs Cointegration Explained
What cointegration means in trading, why it beats correlation for pairs selection, and how to test a candidate pair with the Engle-Granger two-step method.
8 min readATR Trailing Stop: Formula, Best Multiplier, and the Chandelier Exit
How an ATR trailing stop works: the true range formula, choosing a 2–3× multiplier, the chandelier exit, and a worked example with exact stop levels.
8 min readIndex Inclusion Effect: What Joining the S&P 500 Does to a Stock
The index inclusion effect once paid 5–8% per S&P 500 addition. What the research shows, why the edge decayed, and how to test what's left of it.
7 min readADF Test in Trading: How to Test a Spread for Stationarity
How to run the ADF test in trading: what stationarity means, how to read the test statistic, and a worked pairs-spread example with plain numbers.
8 min readKeltner Channels: Formula, Best Settings, and How to Trade Them
Keltner Channels explained: the EMA + ATR formula, the settings that matter, a worked trend-pullback example, and how they differ from Bollinger Bands.
7 min readMOVE Index Explained: How to Read Bond Market Volatility
The MOVE index is the bond market's VIX — expected Treasury yield volatility in basis points. What normal vs. stress levels look like and why equity traders watch it.
8 min readSeptember Effect: Is September Really the Worst Month for Stocks?
The September effect says stocks fall in September. What ~100 years of S&P 500 data actually show, the proposed causes, and how to test the pattern.
8 min readBollinger Band Squeeze: How to Spot and Trade Volatility Compression
How the Bollinger Band squeeze flags volatility compression: the BandWidth formula, a worked example with plain numbers, and how to trade the breakout.
8 min readZ-Score in Trading: How to Calculate It and Set Entry Thresholds
What a z-score measures in trading, how to calculate it on a spread with plain numbers, how to pick the lookback and entry thresholds, and where it misleads.
10 min readMean Reversion Half-Life: How to Calculate It and Read It
What the mean reversion half-life measures, how to estimate it with one regression, and how to use it to set lookbacks, time stops, and cost thresholds.
9 min readHurst Exponent: How to Measure Mean Reversion vs Trend
What the Hurst exponent measures, how to calculate it from lagged volatility, and how to read H above or below 0.5 before picking a reversion or trend model.
8 min read52-Week High Momentum: Why Stocks Near Their Highs Keep Winning
52-week high momentum explained: why stocks near their 52-week highs keep outperforming, the George and Hwang research, and how to build the ranking yourself.
7 min readTriple Witching: What It Is, 2026 Dates, and How Traders Handle It
What triple witching is, the 2026 dates, why volume explodes at the open and close, and how traders avoid getting run over by expiration-day mechanics.
8 min readDeath Cross: What It Really Signals, and When It Fails
The death cross sounds terrifying but fires late by design. What the 50/200-day cross actually signals, its real track record, and how to test it.
8 min readMarket Inefficiency: What It Is and How Traders Exploit It
What market inefficiency really means, why mispricings persist despite arbitrage, and how traders find and test an exploitable inefficiency step by step.
8 min readBenner Cycle: Can a 150-Year-Old Chart Really Time the Market?
The Benner cycle marks 2026 as a year to sell. What the 150-year-old forecast chart gets right, where it fails, and how traders should actually test it.
8 min readTape Reading: How Traders Decode Order Flow in Real Time
Tape reading turns time and sales, bids, and offers into a live read on supply and demand. Learn the modern method, a worked example, and its real limits.
8 min readHindenburg Omen: What the Crash Signal Actually Measures
The Hindenburg Omen flags a split tape — new highs and new lows expanding together. Learn the real criteria, the base rates, and how desks actually read it.
8 min readBetting Against Beta: How the Low-Beta Anomaly Produces Alpha
Betting against beta explained: why low-beta stocks beat CAPM's forecast, how the BAB factor is built, and how to test the anomaly in your own backtests.
9 min readWalk-Forward Analysis: The Rolling Out-of-Sample Test Explained
What walk-forward analysis is, how to set up rolling optimization and test windows, and how walk-forward efficiency separates robust strategies from curve fits.
8 min readOut-of-Sample Testing: How to Tell a Real Edge From a Curve Fit
What out-of-sample testing is, how to split your data without fooling yourself, and a worked example showing how it exposes curve-fit trading strategies.
8 min readTick Index: How to Read the NYSE TICK for Intraday Breadth
The tick index ($TICK) counts NYSE stocks on upticks minus downticks in real time. Learn the key levels — ±800, ±1000 — and how desks trade the extremes.
8 min readPercent of Stocks Above the 200-Day Moving Average, Explained
How to read the percent of stocks above the 200-day moving average: key thresholds, divergences, and a worked example from a narrowing rally.
7 min readVolatility Risk Premium: Why Selling Insurance on Stocks Pays
The volatility risk premium is the persistent gap between implied and realized volatility. Learn how to measure it, why it exists, and how it's harvested.
8 min readAdvance-Decline Ratio: How to Read One Day's Breadth Intensity
The advance-decline ratio divides advancers by decliners to grade a single session's participation. Learn the formula, key thresholds, and how to use it.
8 min readTrade Expectancy: How to Calculate What Every Trade Is Worth
The trade expectancy formula tells you what your average trade is worth. How to calculate it from your log, what counts as good, and why win rate misleads.
7 min readProfit Factor in Trading: How to Calculate It and What's Good
What profit factor measures in trading, how to calculate it from gross wins and losses, what counts as a good number, and the traps that inflate it in backtests.
8 min readEquity Put Call Ratio: How to Read the Options Crowd
What the equity put call ratio measures, the thresholds that mark sentiment extremes, and how to use the signal without getting run over by the crowd.
7 min readArms Index (TRIN): How to Read the Market's Volume-Breadth Gauge
The Arms Index (TRIN) compares breadth to volume to show where the money is actually flowing. Learn the formula, key thresholds, and how desks read it.
8 min readWilliams %R: Formula, Settings, and How to Trade It
What Williams %R measures, the exact formula, and a rules-based way to trade the oscillator without getting run over by strong trends.
7 min readLook-Ahead Bias: The Backtest Error That Manufactures Fake Alpha
What look-ahead bias is, the five ways it sneaks into backtests — restated data, same-bar fills, full-sample statistics — and how to detect and prevent it.
9 min readTrend Following: Rules, Regime Filters, and Surviving the Crash
What trend following is, how time-series momentum rules work, and how to build a moving-average system that survives momentum wipeouts — worked numbers included.
8 min readShort Interest Ratio: How to Read Days to Cover Like a Desk Trader
What the short interest ratio measures, how to calculate days to cover, and how to tell a crowded short from a squeeze setup — with worked numbers.
9 min readCalmar Ratio: How to Judge a Strategy by Its Maximum Drawdown
What the Calmar ratio measures, how to calculate it from CAGR and maximum drawdown, and why the 3-year window can hide risk — with plain-number examples.
8 min readSkew Index Explained: Reading the Market's Tail-Risk Gauge
What the CBOE skew index measures, why readings above 145 matter, and how to combine SKEW with the VIX to read tail-risk pricing like a desk trader.
8 min readDispersion Trading: Correlation, Variance and How the Trade Works
Dispersion trading explained: selling index volatility against single-stock volatility to monetize the gap between implied and realized correlation, in plain numbers.
10 min readGamma Exposure (GEX): How Dealer Hedging Moves the Market
Gamma exposure (GEX) explained: how market-maker hedging pins and amplifies price, and how to read call walls, put walls and the gamma flip with plain numbers.
9 min readWe Backtested Buying the Dip on 36 Years of S&P 500 Data
A buy-the-dip backtest on every S&P 500 drawdown since 1990: win rates by dip depth, what −5% vs −20% dips returned, and the full dataset to download.
7 min readContango vs Backwardation: How to Read the Futures Curve
Contango vs backwardation explained: how to read the futures curve, what roll yield quietly does to ETF returns, and how traders use curve shape as a signal.
8 min readSafe Haven Assets: What Actually Works When Markets Break
Which safe haven assets actually protect a portfolio in a selloff — Treasuries, gold, the dollar, the yen — how to test haven behavior, and how havens fail.
8 min readMACD Divergence: Line vs. Histogram Signals & How to Trade It
What MACD divergence is, how line and histogram divergences differ, and a confirmation-first rule set with a worked example — plus the failure modes.
9 min readEqual Weight vs Cap Weight: Which Index Structure Wins?
Equal weight vs cap weight changes what an index fund actually bets on. Learn how each is built, when equal weight outperforms, and how to read the spread.
8 min readHow to Trade Gold: Drivers, Vehicles, and a Real Trade Plan
How to trade gold step by step: real yields and the dollar, futures vs ETFs vs gold miners, a worked micro-futures example, and the risk rules gold demands.
8 min readPost-Earnings Announcement Drift: How the PEAD Anomaly Works
Post-earnings announcement drift explained: why stocks keep moving for weeks after a genuine earnings surprise, how to measure one, and a worked PEAD trade plan.
8 min readEarnings Season Trading Strategy: How to Trade Reporting Season
Build an earnings season trading strategy: the pre-report checklist, implied move math, IV crush, and post-earnings drift — plus sizing rules that survive.
9 min readMargin Debt: How to Read Wall Street Leverage as an Indicator
Margin debt tracks how much investors borrow to buy stocks. Learn to read its year-over-year rate of change to gauge late-cycle leverage risk.
8 min readThe Carry Trade: How It Works and Why It Unwinds
What a carry trade is, why the interest-rate differential pays a steady return, how to size one — and why crowded carry trades like the 2024 yen unwind blow up fast.
8 min readHidden Divergence: The Continuation Signal Most Traders Misread
What hidden divergence is, why it signals trend continuation rather than reversal, and a full rule set with a worked example, stops, and common traps.
10 min readStatistical Arbitrage: How Stat Arb Works (With a Worked Example)
What statistical arbitrage is, why mean-reverting spreads produce alpha, and how to build and test a basic stat arb portfolio — plus the crowding risk that breaks it.
9 min readVIX Term Structure: Contango, Backwardation and What Inversions Mean
VIX term structure explained: what contango and backwardation mean, how to read the curve with plain numbers, and what inversions have signaled historically.
8 min readHow to Trade Oil: Benchmarks, Catalysts, and a Real Trade Plan
How to trade oil step by step: WTI vs Brent, the weekly EIA inventory report, futures vs ETFs vs energy stocks, and the risk rules crude oil demands.
8 min readHow to Trade Commodities: Vehicles, Term Structure, and Risk
How to trade commodities the right way: futures, ETFs, and producer stocks compared, contango explained in plain numbers, and the risks that punish beginners.
8 min readOpening Range Breakout: Trading the First 30 Minutes
How the opening range breakout works: range window choice, entry and stop placement, a worked example in plain numbers, and the filters that separate signal from noise.
8 min readGap and Go Strategy: How to Trade Morning Momentum
The gap and go strategy step by step: pre-market scan criteria, opening-range entries, VWAP rules, a worked example, and the mistakes that turn gappers into traps.
8 min readMcClellan Oscillator: Reading Breadth Momentum Like a Desk Trader
The McClellan Oscillator turns daily advance-decline data into a breadth momentum gauge. Learn the formula, the key thresholds, and how to read its signals.
8 min readRSI Divergence: How to Spot It, Confirm It & Trade It
What RSI divergence is, why it flags fading momentum, how to trade it with a confirmation trigger and a worked example — plus the traps that make it fail.
8 min readSmart Beta ETFs: What They Are and How to Pick One That Works
Smart beta ETFs promise factor premiums at index-fund prices. How the weighting rules work, where returns get diluted, and how to vet a fund before buying.
8 min readFactor Investing: How Value, Momentum and Quality Drive Returns
Factor investing targets the traits that explain stock returns — value, momentum, size, quality, low volatility. How the premiums work and how to use them.
8 min readRisk-Reward Ratio: How to Tell if a Trade Is Worth It
The risk-reward ratio weighs what you can gain against what you risk on a trade. Learn to calculate it, pair it with win rate, and avoid the classic traps.
8 min readBreadth Thrust Indicator: The Zweig Formula and Signal Threshold
A breadth thrust indicator flags the violent shift from washout to broad buying. Learn the Zweig Breadth Thrust formula, thresholds, and how to read a thrust off a low.
8 min readVIX Trading Strategies: Futures, ETPs, and Term Structure
VIX trading strategies explained: why you can't buy the VIX directly, how futures and ETPs really behave, term-structure trades, and the decay that ruins them.
8 min readNew Highs–New Lows Indicator: Formula, Signals, High-Low Index
The new highs–new lows indicator counts stocks hitting 52-week extremes. Learn to read net new highs and the High-Low Index to spot a narrowing rally early.
8 min readRussell Reconstitution: How the Index Rebalance Moves Markets
Russell reconstitution is the annual rebalance that resets the Russell indexes each June. Learn why it spikes volume, how traders prepare, and the mistakes to avoid.
8 min readTrading Journal: How to Keep One That Finds Your Edge
A trading journal turns a pile of trades into data you can act on. Learn what to log, a worked example, and the mistakes that make most journals useless.
7 min readBuy the Dip Strategy: Does It Actually Work?
What the buy the dip strategy means, when buying dips actually works, when it quietly underperforms, and how to test the rule before you risk real capital.
7 min readStock Market Concentration: When a Few Stocks Run It All
Stock market concentration measures how much of an index a handful of mega-caps drive. Learn how to gauge it, why it raises risk, and how to trade around it.
8 min readGrowth vs Value Investing: How the Style Cycle Works
Growth vs value investing is a style choice that swings in multi-year cycles. Learn what drives each, how the rotation works, and how to read it.
8 min readGap Trading Strategy: How to Trade Opening Gaps
How a gap trading strategy works: the four gap types, gap-and-go vs gap-fill rules, a worked example with plain numbers, and the mistakes that wreck the edge.
8 min readPairs Trading Strategy: A Market-Neutral Guide
How a pairs trading strategy works, why the spread mean-reverts, and a step-by-step framework to find, test, and trade correlated pairs with risk controls.
8 min readPosition Sizing in Trading: How Much to Risk Per Trade
Position sizing in trading decides how much you risk per trade — the lever that controls survival. Learn the fixed-fractional method with worked numbers.
7 min readAdvance-Decline Line: How to Read Market Breadth
The advance-decline line tracks how many stocks rise versus fall each day. Learn to read this breadth indicator and spot divergences before a rally cracks.
7 min readRSI Trading Strategy: Rules, Settings & a Worked Example
A complete RSI trading strategy — what the RSI measures, the settings that matter, entry and exit rules, and a worked example you can backtest first.
8 min readTrading Volatility: How to Position for High-VIX Markets
Trading volatility means managing market turbulence itself, not just direction. Learn what drives the VIX, a worked example, and the mistakes that blow up accounts.
8 min readBreakout Trading Strategy: Rules and Worked Examples
How a breakout trading strategy works: what counts as a real breakout, a step-by-step rule set, a worked example, and how to handle false breakouts.
7 min readSector Rotation Strategy: How to Trade the Cycle
A sector rotation strategy moves capital between market sectors as the cycle and macro regime shift. Learn the framework, a worked example, and the traps.
7 min readStock Market Seasonality: How to Use Calendar Patterns
Stock market seasonality is the tendency for returns to cluster by calendar period. Learn the real patterns, why they exist, and how to use them.
8 min readWhat Is a Trading Edge (and How to Actually Find One)
A trading edge is positive expectancy, nothing more. Learn the math behind it, where real edges come from, and a step-by-step process to find your own.
8 min readSwing Trading Strategies: A Practical Guide for Real Markets
Swing trading strategies that hold up: how multi-day setups produce alpha, a full rule set with a worked example, position sizing, and the mistakes that bleed accounts.
8 min readMomentum Trading Strategy: A Practical Guide
Build a momentum trading strategy you can backtest: the academic evidence, a step-by-step rule set, risk controls, and the mistakes that kill returns.
8 min readMean Reversion Trading Strategy Explained
What a mean reversion trading strategy is, why it works, and a step-by-step framework with entry rules, exits, and risk controls you can backtest.
8 min readMarket Breadth Indicators: The 5 Core Measures and How to Read Them
Market breadth indicators show whether a rally is broad or carried by a handful of stocks. Learn the core measures, divergences, and a daily routine.
8 min readHow to Backtest a Trading Strategy (Step by Step)
Learn how to backtest a trading strategy properly: clean data, realistic costs, out-of-sample testing, and the metrics that separate edge from luck.
8 min read