All About PEG Ratio: Meaning, Formula, Examples, and Real-World Comparison of Leading Indian Stocks
If you’ve been relying solely on the P/E ratio to assess a stock’s valuation, it’s time to enhance your analysis. The PEG ratio (Price/Earnings to Growth ratio) adjusts the P/E by accounting for earnings growth—offering a nuanced perspective.
In this article, you’ll learn what PEG ratio means, how to calculate and interpret it, along with practical comparisons among India’s top companies.
What Is the PEG Ratio?
The PEG ratio refines the traditional P/E metric by incorporating growth expectations:
PEG = (Price ÷ Earnings) ÷ Earnings Growth
‑ Price ÷ Earnings = P/E ratio
‑ Earnings Growth = expected EPS growth (commonly 1-year forward or 5-year average)
It answers the critical question:
“How much am I paying for each unit of earnings growth?”
PEG Ratio Example
Consider two stocks:
- Stock A: P/E = 30, Growth = 30% → PEG = 1 (fairly valued)
- Stock B: P/E = 15, Growth = 5% → PEG = 3 (expensive)
This demonstrates how P/E alone can mislead, whereas PEG adds valuable context.
Interpreting PEG
- PEG < 1 → Potentially undervalued (growth compensates for price)
- PEG ≈ 1 → Fair valuation
- PEG > 2 → Possibly expensive or overvalued, especially among growth stocks
This measure is most reliable when applied to companies with predictable, steady growth.
PEG Ratios of Leading Indian Companies (as of August 2025)
Key Insights:
- Reliance Industries displays a PEG of around 1.8–1.9, suggesting valuation is slightly above fair given growth expectations .
- Infosys also shows PEG between 1.9–2.3, indicating valuation may be elevated in the context of its expected pace of earnings growth .
- Data for HUL and ITC was unavailable in identified public sources at the time of writing.
Where to Find Reliable Growth and PEG Data
- Analyst platforms: Trendlyne, Bloomberg, Yahoo Finance, TradingView
- Official company resources: Quarterly earnings calls, annual reports
- Consensus aggregators: MarketScreener, Moneycontrol
Best practice: Use average or conservative growth inputs—PEG is only as sound as its underlying data.
Sector-Wise Applicability of PEG
- Highly suitable: Technology, Pharma, Biotech, Consumer Discretionary
- Moderately suitable: FMCG—high PEG may be justified by stability
- Less suitable: Banks & Financials—prefer metrics like P/B, ROE, NIMs
- Not suitable: Cyclical or commodity sectors—volatility undermines PEG’s reliability
Limitations of PEG Ratio
- Dependent on growth forecasts, which can be inaccurate
- Ineffective for loss-making or highly cyclical businesses
- Ignores critical factors like debt levels, free cash flow, management quality
- Industry norms vary; what’s “reasonable” in one sector may mislead in another
Thus, PEG should be one component among a broader analytical toolkit.
Key Takeaway
The PEG ratio adds depth to valuation by factoring in growth. It helps identify relative bargains, overpriced picks, and sector disparities. However, it is not a standalone solution. Always supplement PEG with fundamental, technical, and qualitative analysis for well-rounded investment decisions.
