Stream Real-Time Post-Market Volume with QM_Stream_PostMarketVolume

The “QM_Stream_PostMarketVolume” function in MarketXLS provides a real-time streaming feed of post-market trading volume for a specified stock symbol. This is especially helpful for traders and investors looking to monitor extended-hours trading activity after the regular market close. By automatically updating in Excel, it offers an efficient way to stay informed about your investment positions in near real time, helping you make more knowledgeable after-hours decisions.

Why Use This Function?

• Monitor Extended-Hours Activity: Get up-to-date post-market volume data for stocks, even after the normal trading session.
• Real-Time Insights: Because it uses RTD/streaming, any changes to after-hours volume appear dynamically in your spreadsheet.
• Enhanced Analysis: Combine post-market trading volume data with other MarketXLS functions or Excel formulas for deeper insights, such as calculating proportion of total daily volume or detecting unusual after-hours activity.
• Improved Decision-Making: Knowing the after-hours volume can provide extra clues on market sentiment, which may affect next-day trading strategies.

How to Use in Excel

Place the following formula in any cell where you want to see the real-time post-market volume for a particular stock symbol:

=QM_Stream_PostMarketVolume("AAPL")

1. Insert the function in a cell.
2. Provide a valid stock symbol as the argument, enclosed in quotes.
3. Wait for MarketXLS to stream data into your Excel spreadsheet.

Once the data is streaming, the cell automatically updates to reflect real-time changes to that symbol’s post-market volume.

Note:

• Make sure your MarketXLS license and data subscription configuration are both valid. If invalid or not configured, you may see messages indicating license errors or configuration requirements.
• If you enter an invalid or blank symbol, the function may return “NA” or an error.

Parameters Explained

Example Usage

Basic Examples

1. Single Symbol Tracking
   • In cell A1, enter:
   =QM_Stream_PostMarketVolume("AAPL")
   • This cell will display Apple’s after-hours trading volume in real time.

2. Multiple Symbols in Different Cells
   • A2: =QM_Stream_PostMarketVolume("MSFT")
   • A3: =QM_Stream_PostMarketVolume("AMZN")
   • Each cell will show the real-time post-market volume for the respective symbol.

Advanced Scenarios

• Portfolio Monitoring: Place multiple formulas in consecutive cells to create an after-hours watchlist that updates automatically. Combine with other MarketXLS RTD functions to track pre-market volume, last-trade price, or day’s high/low in separate columns.
• Combined Analysis: Use Excel formulas to calculate the percentage of total daily volume that occurs after hours. For example, if B1 is total volume from another function, you could do =A1 / B1 to measure how much of the day’s volume trades in the post-market.
• Trading Strategy Execution: If your trading strategy depends on detecting sudden spikes in after-hours volume, you can create conditional formatting in Excel to highlight cells above a certain threshold or automatically generate alerts.

Common Questions and Troubleshooting

1. Why does the function return “NA”?

   • If the symbol is invalid or empty, the function will return “NA.” Double-check the ticker or ensure the symbol exists.

2. What if I see a license error or subscription message?

   • Make sure your MarketXLS license is active and your data subscription is properly configured under Settings ? Help ? Settings ? Data Subscriptions.

3. How frequently does the data update?

   • The function relies on MarketXLS RTD streaming. Updates typically occur in near real time, depending on your internet connection and data vendor speed.

4. Can I unsubscribe from all symbols?

   • Yes. MarketXLS allows unsubscribing all symbols if you need to stop streaming. However, this is typically managed behind the scenes to optimize performance.

5. Does it work for all US stocks?

   • Generally, yes. However, data availability can vary. Some symbols may have limited or no post-market trading activity, resulting in low or zero volume.

By incorporating QM_Stream_PostMarketVolume in your Excel workflows, you can accurately monitor after-hours trading volume and make more informed decisions based on extended-hours market activity. Whether you’re tracking a single ticker or managing a full watchlist, the real-time streaming functionality ensures that you never miss a potential post-market opportunity.