ROC 21 Crosses Below Zero
The 21-period rate of change closes below zero after being at or above it on the previous candle: price is now lower than it was 21 candles ago. Liquid stocks only (Rs 5 Cr+).
About This Scan
The rate of change (ROC) shows how much price has moved over a set number of candles. A 21-period ROC below zero means the stock is lower than it was 21 candles ago, about a month on the daily chart. This scan lists NSE stocks whose ROC closed below zero on the latest candle after being at or above zero on the previous one, on Rs 5 Cr of last-session turnover. It marks the moment a one-month gain turns into a loss. The mirror scan is ROC 21 Crosses Above Zero.
Scan Rules
Stock passes all of the below filters in the ALL segment using 1D candles:
- 1.ROC 21 less than 0
- 2.1 candle ago ROC 21 greater than or equal to 0
- 3.Traded Value (Rs lakh) greater than or equal to 500
Last Session Sample
As of 2026-11-06, 49 stocks passed every rule. The 5 below are the strongest movers on the list.
| Symbol | Close | Change vs previous close |
|---|---|---|
| EBGNG | 584.35 | -19.9% |
| THERMAX | 2746.3 | -17.27% |
| IBULLSLTD | 29.59 | -8.08% |
| KSHINTL | 1004.75 | -6.89% |
| VIKRAN | 53.89 | -6.73% |
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How To Use This Scan
- •ROC crosses are lagging. Use them to confirm a turn that price already shows, such as a breakdown or a lost average.
- •Check how steep the move is. A stock that only just crossed zero after a long rise has more to prove than one with a large negative ROC.
- •Pair it with a trend filter such as the 50 DMA. This scan has not been back-tested for an edge.
Frequently Asked Questions
What is ROC 21?
The percent change in price over the last 21 candles. On the daily chart that is roughly one month of trading.
What does a zero cross mean?
Price is now lower than it was 21 candles ago, where on the previous candle it was not.
Does it work on intraday charts?
Yes. Switch the interval to 15m or 1h in the screener. The default is the daily chart.