RTI_Price_Change_From_Min: Monitor Intraday Price Changes by Specific Minute

RTI_Price_Change_From_Min is a powerful Excel function provided by MarketXLS that calculates how much a stock’s price has changed since a specific minute of the trading day. By integrating directly within your spreadsheet, it helps traders and investors quickly identify significant intraday movements and make faster, data-driven decisions.

Why Use This Function?

• Monitor price changes from the opening bell or any specific minute during the trading session.
• Set price alerts or triggers based on how the price has shifted from a particular time.
• Ideal for intraday strategies where minute-by-minute swings can signal entry or exit points.
• Quickly gauge market trends by comparing current prices to a key reference minute.
• Seamlessly integrate with other Real-Time Intelligence (RTI) functions for more comprehensive strategies.

How to Use in Excel

Use the following syntax directly in any Excel cell to retrieve the stock’s price difference from a specified minute:

=RTI_Price_Change_From_Min(symbol, time)

1. Enter the function in a spreadsheet cell.
2. Replace "symbol" with the ticker symbol you want to track (e.g., "AAPL").
3. Replace "time" with the minute you want to reference (e.g., "09:30" or cell containing a valid time).
4. Press Enter to calculate the price change since that minute.

MarketXLS will make a real-time data call to your configured data provider (e.g., Zerodha or AngelOne). If you have not set up a data seller, you will receive a message prompting configuration.

Parameters Explained

• If the function cannot parse the time or the format is invalid, an error is thrown.
• You must have a valid MarketXLS license and a configured data seller for real-time updates.

Example Usage

Basic Examples

1. Compare the current price of Apple to its price at 9:30 AM: » Formula:
   =RTI_Price_Change_From_Min("AAPL", "09:30")
   Explanation:
   • Converts 09:30 to "09:30" (HH:mm).
   • Fetches Apple’s price at 9:30 AM and subtracts it from the latest real-time price.
   • Returns the difference (may be positive or negative).

2. Use an Excel cell containing a valid OADate/Time value for greater flexibility:
   » Suppose cell A2 holds the time value 44860.3958 (which corresponds to 9:30 AM). Then:
   =RTI_Price_Change_From_Min("AAPL", A2)

Advanced Scenarios

• Multi-Symbol Monitoring: Combine multiple calls to RTI_Price_Change_From_Min across different ticker symbols to observe each symbol’s movement from a common time (e.g., market open).
• Automated Alerts: Use conditional formatting in Excel to highlight cells where the price change exceeds a certain threshold.
• Pair with Other RTI Functions: For instance, use RTI_High("AAPL", …) or RTI_Volume("AAPL", …) in adjacent cells to see high or volume data around that same reference time.

Common Questions and Troubleshooting

1. Why am I getting an “Invalid time format” error?
   • The function only accepts valid times in "HH:mm", "HH:mm:ss" (with seconds truncated), or Excel’s date/time formats (including OADate). Ensure your time argument can be recognized as a valid minute by Excel.

2. What if my data isn’t updating?
   • Make sure you have a valid MarketXLS license and at least one data seller configured (Zerodha or AngelOne).
   • Confirm that the symbol is actively subscribed in the data provider's system.

3. How does the function handle seconds?
   • Seconds are dropped when the function formats the time internally (“HH:mm”). Any seconds component is ignored.

4. Can I reference times from a previous trading day?
   • The function attempts to return data according to your data seller’s intraday coverage. If the specified minute is outside the current trading session or historical data range, you might get stale or missing data depending on your provider.

With RTI_Price_Change_From_Min in your Excel toolkit, you can manage intraday price signals effectively, spot short-term swing opportunities, and react to market volatility with precision. By leveraging real-time data from MarketXLS, you stay closer to the market than ever before—right inside your familiar Excel workspace.