How to Use Gap Open and Broad Day Range Data
This page explains how to read and interpret the Gap Open and Broad Day Range table. This master scanner is designed to identify stocks that open with a meaningful gap and then exhibit a wide intraday price range, indicating strong participation and active price discovery.
Each row represents one stock for one trading day, highlighting stocks that show both opening imbalance and sustained intraday movement.
Understanding Each Column
Symbol
The stock symbol as listed on the exchange (e.g., NSE). Each symbol uniquely identifies a listed company.
Date
The trading date on which the gap and broad range behavior was observed. All values in the row correspond to this trading session.
Open
The price at which the stock opened when the market began trading.
- A significant gap from the previous close reflects overnight imbalance
- Can be caused by news, earnings, or global market cues
High
The highest price at which the stock traded during the day.
- Represents the upper boundary of intraday demand
- Useful for identifying intraday resistance
Low
The lowest price at which the stock traded during the day.
- Represents the lower boundary of intraday supply
- Helps identify intraday support
Close
The price at which the stock closed at the end of the trading session.
- Shows where the market settled after the day’s volatility
- Closes near the high suggest strength; near the low suggest weakness
Prev Close
The closing price of the previous trading day.
- Used as the reference point for gap calculation
- Helps assess the significance of the opening move
Volume
The total number of shares traded during the day.
- High volume confirms strong participation
- Low volume gaps are more prone to failure
Gap
The percentage difference between the current day’s open and the previous close.
- Positive values indicate gap-up openings
- Negative values indicate gap-down openings
- Larger gaps reflect stronger overnight imbalance
Day Range
The percentage difference between the day’s high and low relative to price.
- High values indicate broad intraday movement
- Suggests active participation throughout the session
How to Read This Data Holistically
This master scanner should be interpreted by combining opening behavior with intraday volatility.
- Gap with broad day range indicates sustained interest beyond the open
- Gaps that fade quickly often show narrow day ranges
- Strong closes validate the quality of the gap move
What This Scanner Indicates
- Stocks with strong opening imbalance
- High intraday volatility and participation
- Potential candidates for momentum or continuation setups
What This Scanner Does Not Indicate
- It does not define trade direction on its own
- It does not guarantee continuation after the day
- It does not replace risk management or confirmation
Important Notes
- This scanner is most effective on high-volume stocks
- News-driven gaps require additional context
- Always combine with trend, support-resistance, and broader market analysis
Disclaimer: This information is provided for educational and analytical purposes only and should not be considered trading or investment advice.
Data Update Frequency
Gap Open and Broad Day Range data is updated after market hours for each trading day.
Summary
The Gap Open and Broad Day Range master scanner helps identify stocks that show both strong opening imbalance and sustained intraday movement. It is best used to focus attention on active stocks where price discovery is clearly underway.