The Arms Index, or TRIN, compares the advance/decline ratio with advancing and declining volume. See how Richard Arms' indicator gauges market sentiment.
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The McClellan Summation Index is a cumulative version of the McClellan Oscillator. See how it tracks intermediate to major market trends and reversals.
Breadth indicators measure how many stocks are rising or falling, and their volume, to confirm index trends or warn of reversals. See how they work.
Market breadth compares advancing stocks with declining ones on an index or exchange. Positive breadth suggests bulls are in control of momentum.
The negative volume index tracks price moves on days when volume is lower than the day before, to follow smart money. See how the NVI works.