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How to Scan for High-Probability Bull Flag Setups

From TradingHabits, the trading encyclopedia · 5 min read · February 28, 2026
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One of the biggest challenges for bull flag traders is finding high-probability setups in a timely manner. Manually scanning through hundreds of charts can be a time-consuming and inefficient process. A better approach is to use a stock screener to automate the process. This article will provide a practical guide to using stock screeners to find high-probability bull flag setups.

What is a Stock Screener?

A stock screener is a tool that allows you to filter a large universe of stocks based on a set of criteria that you define. By using a stock screener, you can quickly and easily identify stocks that meet your specific trading requirements.

Criteria for a Bull Flag Scan

Here are some of the key criteria that you can use to scan for bull flag setups:

  • Price Performance: Look for stocks that have had a strong upward move over the past few weeks or months.
  • Volume: Look for stocks that are trading on above-average volume.
  • Proximity to 52-Week High: Look for stocks that are trading near their 52-week high.
  • Moving Averages: Look for stocks that are trading above their 50-day and 200-day moving averages.

A Sample Bull Flag Scan

Here is a sample scan that you can use to find potential bull flag setups. This scan is for illustrative purposes only, and you may need to adjust the criteria based on your trading style and market conditions.

CriteriaValue
Price> $10
Average Volume (30-day)> 500,000
Price vs. 52-Week HighWithin 15% of 52-week high
Price vs. 50-Day Moving AverageAbove 50-day moving average
Price vs. 200-Day Moving AverageAbove 200-day moving average
Performance (1-month)> 20%

The Next Step: Manual Chart Analysis

Once you have run your scan, you will have a list of potential candidates. The next step is to manually review the charts of each stock to see if they are forming a valid bull flag pattern. Look for a clear flagpole, a period of consolidation, and a breakout on high volume.

By using a stock screener to automate the initial part of the process, you can save time and focus your energy on analyzing the most promising setups. A stock screener is a effective tool that can help you to find more high-probability bull flag trades.