Understanding Market Breadth
Market breadth summarizes participation in the selected stock basket, while weighted values show the contribution behind that participation.
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Understand market breadth, weighted contributions, and index calculations.
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What Is the Weighted Index Chart Showing?
The chart visualizes weighted movement for the selected basket. It is an analytical view, not an official calculation of the complete benchmark.
What Does Index Weight Mean?
Index weight estimates how much influence a constituent has under that index's methodology. A higher weight can make the same percentage move matter more.
What Does Points per $1 Mean?
Points per $1 is an estimated sensitivity: the approximate index-point effect associated with a one-dollar move in a constituent, using the app's reference inputs.
What Is Effective Index-Point Contribution?
Effective contribution relates a followed stock's move to its IVV-based weight and an estimated S&P point scale. It is not an official index reading or a trade signal.
Why Can the Index Rise While More Stocks Fall?
A smaller number of higher-weighted constituents can contribute more than a larger number of lower-weighted decliners. See the Learn article for a worked conceptual example.
Why Is the S&P 500 Basket Sometimes 29 Stocks Rather Than 30?
Check the selected basket and current application state before diagnosing a count. There is not one assumed explanation for a 29-security view.
How Do S&P 500, Nasdaq-100, and Dow 30 Differ?
The S&P 500 and Nasdaq-100 use market-cap-based weighting rules; the Dow is price-weighted. Their constituent counts and methodologies differ.
What Does Partial Basket History Mean?
A chart may have less history than expected when comparable observations are unavailable. Exact causes depend on the symbol, feed, timeframe, and app version.
How Do I Read Trend Matrix 360 Conditions?
The desktop development preview has four EMA directions and nine descriptive conditions across two independent panels.
How Do I Use Candle Pulse Fixed and Rolling?
Fixed uses scheduled candle intervals; Rolling uses trailing windows ending at the latest available basket observation.