U.S. Indexes and Exchanges Quotes

Daily Volume Evaluation - S&P 100 Index

Evaluating the Magnitude of Volume Moving Average (VMA) Surges

Daily VMA Surge Evaluation - Volume Oscillator Calculator

Evaluating VMA surges is a key element of our volume analysis methodology. For instance, a 1-day VMA that protrudes significantly above its 10-day VMA may be indicative of an abnormally high trading activity, which has the potential to lead to changes in the market's prevailing trend. Generally speaking, the more extended the duration of the VMA surge, the stronger the potential that the ensuing trend reversal may be significant.

Note: Please, keep in mind that slow and fast VMA period setting is defined by trading days. For instance 5 trading days are equal 7 calendar days (1 week).

Select Index:
Compare fast VMA:
with slow VMA:
As of 10/24/2014
VMA PeriodVMA ValueVolume
PVO - Volume
Oscillator (ratio)
PVO - Volume
Oscillator (%)
2-day (Fast VMA) 0 K 0 0.00 -100.00% 0.00
10-day (Slow VMA) 0 K
As of 10/24/2014 2-day VMA is -23.2% lower then  10-day VMA.
The index advanced 0.66% on this day.

About S&P 100 Index Volume Oscillators

The S&P 100 Index calculator above evaluates the S&P 100 Index volume from different prospective. The Volume Oscillator shows the difference between fast and slow Volume Moving averages and is calculated as

Volume Oscillator  = Fast VMA - Slow VMA

The following formula is used to receive actual PVO values:

PVO   = Fast VMA / Slow VMA

The percentage PVO value is calculated as follows:

PVO(%)   = (Fast VMA / Slow VMA - 1) x 100

MarketVolume®  is the only source of real-time, intraday volume and Advance / Decline indicators for the S&P 100 Index and other the major U.S. indexes and exchanges.

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