01 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 read 02 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 read 03 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 read 04 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 read 05 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 read 06 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 read 