C01
Index Weight Explained
A constituent's weight estimates its share of the index's weighted market value under that index's methodology.
Full editorial draft available for owner review; not approved for public indexing.Market Education / Collection
How Market Watch 360 Calculates
Understand the estimates, reference values, and display logic behind the desktop views.
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C02
Weighted Points and Effective Contribution
Learn how approximate constituent returns can be translated into percentage-point and index-point contributions.
Full editorial draft available for owner review; not approved for public indexing.C03
Tracking 10, 15, 20, 25, or 30 Stocks
Changing the selected basket changes its coverage and the conclusions you can draw from it.
Full editorial draft available for owner review; not approved for public indexing.C04
How the Weighted Index Chart Works
The app's weighted chart is an analytical view of selected constituents, not an official benchmark calculation.
Full editorial draft available for owner review; not approved for public indexing.C05
Why We Use IVV, QQQ, and DIA as Weight References
ETF holdings can provide accessible estimates for index constituents, but ETF weights are not automatically exact index weights.
Full editorial draft available for owner review; not approved for public indexing.C06
Alphabet's GOOG and GOOGL Share Classes
GOOG and GOOGL are separate listed securities issued by one company; security counts and company counts can differ.
Full editorial draft available for owner review; not approved for public indexing.C07
How Stock Splits and Rebalancing Affect Index Weights
Corporate actions and scheduled index maintenance can change prices, shares, constituents, and weights.
Full editorial draft available for owner review; not approved for public indexing.C08
How Market Watch 360 Updates Its Views
A guide to the desktop app's refresh, calculation, sorting, and session behavior, pending final product review.
Full editorial draft available for owner review; not approved for public indexing.