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Negative Volume Index

"Developed by Paul L. Dysart Jr and was brought to light by Norman Forsback in the 1970s. The Negative Volume Index ""NVI"" is useful for the identification of primary market trends and possible short term trend reversals. The NVI is calculated when today’s trading volume is less than yesterday's trading volume. The NVI is derived with the below formula. NVI = PNVI + (((TCP - YCP)/YCP) *PNVI) PNVI = Previous Negative Volume Index TCP = Today's Closing Price YCP = Yesterday's Closing Price"

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