ROS/RMS Analysis#

Metadata#

• Name: ros-rms-analysis
• Description: Return on Sales vs Relative Market Share analysis
• Triggers: ROS, RMS, economies of scale, competitive advantage, profitability

Instructions#

Analyze relationship between Return on Sales (ROS) and Relative Market Share (RMS) to identify competitive advantage from scale.

Framework#

The ROS/RMS Equation#

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ROS = Operating Profit / Revenue
RMS = Our Market Share / Largest Competitor Market Share

Key Insight#

If ROS > Industry Average AND RMS > 1 → Both superior profitability AND scale advantage = strong competitive position

Economies of Scale Logic:

• Larger RMS → Should have lower costs → Higher ROS
• Smaller RMS → Acceptable to have higher costs → Lower ROS

Chart Types#

Scatter Plot - ROS on Y-axis, RMS on X-axis (log scale) Trend Line - Industry average ROS vs RMS Sector Chart - Multiple competitors positioned in quadrants

Output Process#

1. Define industry - Boundaries, products, geography
2. Gather data - Revenue, profits, market shares
3. Calculate metrics - ROS for all players, RMS for us
4. Benchmark - Industry average ROS, competitive thresholds
5. Create visualization - Scatter or sector chart
6. Interpret results - Identify positioning and scale effects

Output Format#

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## ROS/RMS Analysis: [Industry/Company]

### Company Positioning

| Competitor | Revenue | Profit | ROS | RMS | Position | Scale | Position |
|------------|---------|--------|------|----------|---------|
| [Company A] | $X M | $Y M | Z% | 0.5 | Small | ❌ Cost disadvantage |
| [Company B] | $X M | $Y M | Z% | 1.2 | Medium | ❌ Cost disadvantage |
| [Company C] | $X M | $Y M | Z% | 0.8 | Large | ⚠️ Mixed |
| [Company D] | $X M | $Y M | Z% | 2.5 | Leader | ✅ Scale advantage |

### Trend Analysis

| Metric | Our Value | Industry Avg | Assessment |
|--------|-----------|-------------|------------|
| ROS | X% | Y% | 🟢 Below average |
| Market Share | Z% | - | 🟡 Losing share |
| Growth Rate | X% | Y% | 🟢 Below market |

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### Economies of Scale Analysis

**Regression Line:** ROS = a × (1/RMS) + b
- If 'a' is significant and positive → Strong economies of scale
- If 'a' is insignificant → Weak or no scale economies

**Implications:**
1. **[Implication 1]** - [Analysis]
2. **[Implication 2]** - [Analysis]

### Strategic Recommendations

1. **[Recommendation 1]** - [Description]
2. **[Recommendation 2]** - [Description]
3. **[Recommendation 3]** - [Description]

Tips#

• Use multi-year averages for ROS (3-5 years)
• RMS on log scale (1.0 = equal to leader, 0.5 = half)
• Industry ROS varies by sector - don't assume universality
• Look for outliers - they tell important stories
• Consider market share trends - gaining share can compensate for lower ROS

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## References

- Henderson, Bruce. *The Logic of Business Strategy*. 1979.
- Buzzell, Robert & Gale, Bradley. *Market Structure and Competitive Strategy*. 1981.