Effective Number of Holdings: A Concentration Check

A trader opens a brokerage statement and counts twenty tickers. Twenty names feels diversified. Then two of those positions have run so far that together they carry roughly half the…

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Take-Profit Strategy: The Overlooked Half of Exits

You are up on a position. The chart has run your way for six sessions, the gain is real on the screen, and the only question left is where you…

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Read more about the article NIO +1227%: the base breakout of an EV survivor, May 2020
NIO on the 2020-05-26 breakout entry, from my chart archive

NIO +1227%: the base breakout of an EV survivor, May 2020

NIO's back on the StockTwits trending list this week, and a mid-July 2026 upgrade to buy from Goldman Sachs is a big reason why. That makes now a good time…

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Bid-Ask Spread: The Built-In Cost of Every Fill You Get

You mark a small-cap you've been watching, the last trade printed at 24.05, and you send a market order to get in. The fill comes back at 24.18. Nothing moved…

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Pyramiding a Position: Adding to Winners the Right Way

You take a breakout at 50.00 on a stock that spent six weeks coiling under resistance. The next morning it opens at 51.20 and holds. Your thesis is working, and…

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Risk of Ruin: The Sizing Math That Keeps You Alive

A trader can be right more often than wrong, collect two dollars on every winner for each dollar lost, and still drive the account to zero. It sounds impossible until…

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Turtle Trading Rules: The Complete Mechanical System

Two stocks flash a fresh high on the same morning. One is a quiet utility that moves twenty cents on a busy day. The other is a chip name that…

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Skewness in Trading: Why It Beats Tracking Win Rate

Picture an account that closes most days in the red and still finishes the year well ahead. The journal reads as a wall of small losses, the equity curve grinds…

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