Why Trade Management Beats Just Being “Right”

by | Jul 20, 2025 | Greg's Blog Posts, Mastertrader Market Results

How "Sharp" Are Your Trading Results?

A Guide for New and Experienced Investors.

In sports, success is often measured by averages—think batting averages in baseball or free-throw percentages in basketball. The higher the number, the better the performance.

Trading is similar, but focusing only on your "batting average" (the percentage of winning trades) can be misleading.

A trader with a lower batting average can sometimes outperform one with a higher average. How? The Sharpe Ratio. 

The key is understanding the Sharpe Ratio and how it works alongside your batting average.

What’s a Batting Average in Trading? Your batting average (BA) is the percentage of trades that make money. For example, if you win 6 out of 10 trades, your BA is 60%. While a high BA sounds great, it doesn’t tell the whole story about profitability.

What’s the Sharpe Ratio? The Sharpe Ratio measures the quality of your wins compared to your losses. It’s calculated by dividing your average winning trade (in dollars) by your average losing trade (in dollars).

  • Example: If your average winning trade is $200 and your average losing trade is $100, your Sharpe Ratio is 2.0 ($200 ÷ $100 = 2).
  • A Sharpe Ratio above 1 means your wins are larger than your losses, which is good. A ratio below 1 means your losses outweigh your wins, which can hurt profitability.
Why Does the Sharpe Ratio Matter? A high batting average doesn’t guarantee profits if your wins are small and your losses are large. Conversely, a lower batting average with bigger wins can lead to better results.

Let’s look at an example: Meet Bob and Mary

  • Bob: 75% BA (15 wins, 5 losses out of 20 trades). He risks $100 per trade, with average wins of $75 and average losses of $75.
    • Total profit: 15 wins × $75 = $1,125; 5 losses × $75 = $375. Net profit = $1,125 - $375 = $750.
    • Sharpe Ratio: $75 ÷ $75 = 1.0.
  • Mary: 50% BA (10 wins, 10 losses out of 20 trades). She risks $100 per trade, with average wins of $250 and average losses of $100.
    • Total profit: 10 wins × $250 = $2,500; 10 losses × $100 = $1,000. Net profit = $2,500 - $1,000 = $1,500.
    • Sharpe Ratio: $250 ÷ $100 = 2.5.

Despite Bob’s higher batting average, Mary makes twice as much profit because her wins are much larger than her losses, giving her a higher Sharpe Ratio. Key Lessons for Traders

  • Batting Average Alone Isn’t Enough: A high BA is great, but small wins paired with large losses can wipe out profits. Many new traders exit winning trades too early (often due to fear), limiting their gains.
  • Aim for a Strong Sharpe Ratio: Let your winning trades run to maximize gains while keeping losses small. This boosts your Sharpe Ratio and overall profitability.
  • Balance is Key:
    • A lower BA (e.g., 45-55%) can still be profitable with a high Sharpe Ratio (2.0 or more).
    • A higher BA (e.g., 55-70%) can work with a lower Sharpe Ratio (1.5 or so), but your wins need to match your risk at least.
  • Match Wins to Risk: Your average winning trade should at least equal the amount you risk per trade. For example, if you risk $100 per trade, aim for average wins of $100 or more. In Bob’s case, if his average win increased to $100, his profit would jump from $750 to $1,125, and his Sharpe Ratio would improve to 1.33 ($100 ÷ $75).

Common Mistakes to Avoid

  • Cutting Winners Short: New traders often exit winning trades too soon, missing out on bigger profits.
  • Letting Losses Run: Holding onto losing trades, hoping they’ll recover, can tank your Sharpe Ratio and profits.
  • Focusing Only on Batting Average: A high BA with a low Sharpe Ratio (small wins, big losses) is a recipe for failure.

Targets for Traders

  • Swing/Day Traders: Aim for a 45-55% BA and a Sharpe Ratio of ~2.0.
  • Scalp Traders: Aim for a 55-70% BA and a Sharpe Ratio of ~1.5.
  • All Traders: Ensure your average win is at least equal to your risk per trade.

How to Improve

  • Review Your Trades: Calculate your batting average and Sharpe Ratio regularly to spot patterns.
  • Manage Risk: Use stop-losses to cap losses and let winners run to boost your Sharpe Ratio.
  • Build Confidence: Trust your trading plan to avoid exiting trades too early out of fear.
  • Create a Trading Plan: Include rules for when to enter, exit, and hold trades to balance BA and Sharpe Ratio.
  • Take the Swing Trading course that covers position and money management, or do a Deep Dive into Position and Money Management with the Advanced Management Strategies (AMS) course.

Success in trading isn’t just about winning often—it’s about making your wins count. A solid Sharpe Ratio, paired with a reasonable batting average, can lead to consistent profits. Focus on managing trades effectively, and you’ll be on your way to trading success. Happy trading!

Learn More About Sharpe Ratio, Batting Average, and Advanced Position and Money Management