TransDigm Group Incorporated (TDG) P/E Ratio History
UndervaluedTrading at 34.7x vs 5Y avg 45.3x · 0th percentile · Below historical baseline · Data 2006–2026
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P/E Ratio Analysis
As of September 23, 2026, TransDigm Group Incorporated (TDG) trades at a price-to-earnings ratio of 34.7x, with a stock price of $1112.42 and trailing twelve-month earnings per share of $36.77.
The current P/E is 23% below its 5-year average of 45.3x. Over the past five years, TDG's P/E has ranged from a low of 35.6x to a high of 60.2x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Industrials sector median P/E of 26.4x, TDG trades at a 32% premium to its sector peers. The sector includes 397 companies with P/E ratios ranging from 0.1x to 194.2x.
The PEG ratio of 1.11 (P/E divided by 25% EPS growth) suggests a fair valuation relative to its earnings growth. Peter Lynch popularized the rule that a PEG below 1.0 indicates an attractive entry point.
Relative to the broader market, TDG commands a significant premium over the S&P 500 median P/E of 25.5x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our TDG DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
TDG Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
TDG P/E vs Peers
Aerospace Components and Structures peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $43B | 62.8 | 3.82 | +34% | |
| $19B | 45.4 | 3.25 | +20% | |
| $20B | 42.8 | 1.96 | +22% | |
| $9B | 361.3 | - | +18% | |
| $10B | 36.1 | 2.87 | +29% | |
| $3B | 19.0Lowest | 0.14Best | +26% | |
| $5B | 24.1 | 0.64 | +1297%Best | |
| $5B | 72.8 | - | +48% | |
| $156B | 79.7 | - | +114% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
TDG Historical P/E Data (2006–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q3 | Jun 27 2026 | $1324.56 | $32.96 | 40.2x | +11% |
| FY2026 Q2 | Mar 28 2026 | $1140.03 | $32.04 | 35.6x | -1% |
| FY2026 Q1 | Dec 27 2025 | $1309.24 | $31.08 | 42.1x | +17% |
| FY2025 Q4 | - | $1318.02 | $32.08 | 41.1x | +14% |
| FY2025 Q3 | Jun 28 2025 | $1499.17 | $30.12 | 49.8x | +38% |
| FY2025 Q2 | Mar 29 2025 | $1377.20 | $29.62 | 46.5x | +29% |
| FY2025 Q1 | Dec 28 2024 | $1290.90 | $28.34 | 45.5x | +26% |
| FY2024 Q4 | Sep 30 2024 | $1427.13 | $25.60 | 55.8x | +55% |
| FY2024 Q3 | Jun 29 2024 | $1277.61 | $27.03 | 47.3x | +31% |
| FY2024 Q2 | Mar 30 2024 | $1231.60 | $25.20 | 48.9x | +35% |
| FY2024 Q1 | Dec 30 2023 | $1011.60 | $23.56 | 42.9x | +19% |
| FY2023 Q4 | Sep 30 2023 | $843.13 | $22.01 | 38.3x | +6% |
| FY2023 Q3 | Jul 01 2023 | $894.17 | $18.77 | 47.6x | +32% |
| FY2023 Q2 | Apr 01 2023 | $737.05 | $16.73 | 44.0x | +22% |
| FY2023 Q1 | Dec 31 2022 | $629.65 | $14.79 | 42.6x | +18% |
| FY2022 Q4 | Sep 30 2022 | $524.82 | $13.44 | 39.1x | +8% |
| FY2022 Q3 | Jul 02 2022 | $541.69 | $13.04 | 41.5x | +15% |
| FY2022 Q2 | Apr 02 2022 | $667.04 | $14.36 | 46.4x | +29% |
| FY2022 Q1 | Jan 01 2022 | $636.28 | $12.76 | 49.8x | +38% |
| FY2021 Q4 | - | $624.57 | $10.37 | 60.2x | +67% |
| FY2021 Q3 | Jul 03 2021 | $661.44 | $8.55 | 77.4x | +114% |
| FY2021 Q2 | Apr 03 2021 | $603.71 | $3.02 | 200.0x | +455% |
| FY2021 Q1 | Jan 02 2021 | $618.85 | $6.85 | 90.4x | +151% |
| FY2020 Q4 | Sep 30 2020 | $475.12 | $8.26 | 57.5x | +59% |
| FY2020 Q3 | Jun 27 2020 | $421.09 | $11.12 | 37.9x | +5% |
| FY2020 Q2 | Mar 28 2020 | $363.01 | $13.80 | 26.3x | -27% |
| FY2020 Q1 | Dec 28 2019 | $563.98 | $11.78 | 47.9x | +33% |
| FY2019 Q4 | Sep 30 2019 | $520.67 | $13.84 | 37.6x | +4% |
| FY2019 Q3 | Jun 29 2019 | $483.80 | $13.36 | 36.2x | +0% |
| FY2019 Q2 | Mar 30 2019 | $453.99 | $14.69 | 30.9x | -14% |
| FY2019 Q1 | Dec 29 2018 | $335.28 | $14.73 | 22.8x | -37% |
| FY2018 Q4 | Sep 30 2018 | $372.30 | $16.33 | 22.8x | -37% |
| FY2018 Q3 | Jun 30 2018 | $345.14 | $13.83 | 25.0x | -31% |
| FY2018 Q2 | Mar 31 2018 | $306.94 | $13.00 | 23.6x | -35% |
| FY2018 Q1 | Dec 30 2017 | $274.62 | $12.16 | 22.6x | -37% |
| FY2017 Q4 | Sep 30 2017 | $255.65 | $7.92 | 32.3x | -10% |
| FY2017 Q3 | Jun 30 2017 | $268.87 | $9.04 | 29.7x | -18% |
| FY2017 Q2 | Apr 01 2017 | $220.16 | $8.48 | 26.0x | -28% |
| FY2017 Q1 | Dec 31 2016 | $248.96 | $8.17 | 30.5x | -16% |
| FY2016 Q4 | Sep 30 2016 | $289.12 | $9.78 | 29.6x | -18% |
| FY2016 Q3 | Jul 02 2016 | $262.72 | $9.51 | 27.6x | -23% |
| FY2016 Q2 | Apr 02 2016 | $221.42 | $8.74 | 25.3x | -30% |
| FY2016 Q1 | Jan 02 2016 | $228.45 | $8.23 | 27.8x | -23% |
| FY2015 Q4 | Sep 30 2015 | $212.41 | $7.90 | 26.9x | -25% |
| FY2015 Q3 | Jun 27 2015 | $229.17 | $7.41 | 30.9x | -14% |
| FY2015 Q2 | Mar 28 2015 | $217.87 | $5.94 | 36.7x | +2% |
| FY2015 Q1 | Dec 27 2014 | $200.10 | $5.56 | 36.0x | -0% |
| FY2014 Q4 | - | $184.33 | $5.38 | 34.3x | -5% |
| FY2014 Q3 | Jun 28 2014 | $167.37 | $4.85 | 34.5x | -4% |
| FY2014 Q2 | Mar 29 2014 | $183.86 | $5.98 | 30.7x | -15% |
| FY2014 Q1 | Dec 28 2013 | $160.12 | $5.65 | 28.3x | -21% |
| FY2013 Q4 | Sep 30 2013 | $138.70 | $5.50 | 25.2x | -30% |
| FY2013 Q3 | Jun 29 2013 | $156.77 | $5.65 | 27.7x | -23% |
| FY2013 Q2 | Mar 30 2013 | $152.92 | $5.92 | 25.8x | -28% |
| FY2013 Q1 | Dec 29 2012 | $133.05 | $6.18 | 21.5x | -40% |
| FY2012 Q4 | Sep 30 2012 | $141.87 | $6.03 | 23.5x | -35% |
| FY2012 Q3 | Jun 30 2012 | $134.30 | $5.65 | 23.8x | -34% |
| FY2012 Q2 | Mar 31 2012 | $115.76 | $5.03 | 23.0x | -36% |
| FY2012 Q1 | Dec 31 2011 | $95.68 | $4.57 | 20.9x | -42% |
| FY2011 Q4 | Sep 30 2011 | $81.67 | $3.22 | 25.4x | -30% |
| FY2011 Q3 | Jul 02 2011 | $93.30 | $2.92 | 32.0x | -11% |
| FY2011 Q2 | Apr 02 2011 | $84.18 | $2.69 | 31.3x | -13% |
| FY2011 Q1 | Jan 01 2011 | $72.01 | $1.64 | 43.9x | +22% |
| FY2010 Q4 | - | $62.05 | $1.79 | 34.7x | -4% |
| FY2010 Q3 | Jul 03 2010 | $50.25 | $1.63 | 30.8x | -14% |
| FY2010 Q2 | Apr 03 2010 | $52.78 | $1.59 | 33.2x | -8% |
| FY2010 Q1 | Jan 02 2010 | $47.49 | $2.36 | 20.1x | -44% |
| FY2009 Q4 | Sep 30 2009 | $49.81 | $3.10 | 16.1x | -55% |
| FY2009 Q3 | Jun 27 2009 | $35.39 | $3.06 | 11.6x | -68% |
| FY2009 Q2 | Mar 28 2009 | $32.99 | $2.99 | 11.0x | -69% |
| FY2009 Q1 | Dec 27 2008 | $30.51 | $2.86 | 10.7x | -70% |
| FY2008 Q4 | - | $34.23 | $2.65 | 12.9x | -64% |
| FY2008 Q3 | Jun 28 2008 | $34.85 | $2.39 | 14.6x | -60% |
| FY2008 Q2 | Mar 29 2008 | $37.32 | $2.12 | 17.6x | -51% |
| FY2008 Q1 | Dec 29 2007 | $45.25 | $1.93 | 23.4x | -35% |
| FY2007 Q4 | Sep 30 2007 | $45.71 | $1.82 | 25.1x | -30% |
| FY2007 Q3 | Jun 30 2007 | $40.46 | $1.65 | 24.5x | -32% |
| FY2007 Q2 | Mar 31 2007 | $36.38 | $0.90 | 40.4x | +12% |
| FY2007 Q1 | Dec 30 2006 | $26.51 | $0.75 | 35.3x | -2% |
| FY2006 Q4 | Sep 30 2006 | $24.42 | $0.51 | 47.9x | +33% |
Average P/E for displayed period: 36.1x
TDG Chart Terminal
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Peer Comparison
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TDG — Frequently Asked Questions
Quick answers to the most common questions about buying TDG stock.
What is TDG's P/E ratio?
TransDigm Group Incorporated (TDG) trailing twelve-month P/E ratio is 34.7x, based on TTM diluted EPS of $36.77. The 5-year average P/E is 45.3x and the historical range spans 35.6x to 60.2x.
Is TDG stock overvalued or undervalued?
TDG trades at 34.7x P/E, below its 5-year average of 45.3x. At the 0th percentile of its historical range (35.6x–60.2x), the stock is priced at a discount to its own history.
Is TDG stock expensive?
No, TDG is not expensive on a historical basis. The current P/E of 34.7x is below the 5-year average of 45.3x and sits at the 0th percentile of its valuation range.
What is TDG's historical P/E range?
Over the past 5 years, TDG's P/E ratio has ranged from 35.6x to 60.2x, with a median of 45.5x and an average of 45.3x. The current P/E of 34.7x places the stock at the 0th percentile of this range. Full historical data spans 2006–2026.
How does TDG's P/E compare to the S&P 500?
TDG trades at 34.7x P/E versus the S&P 500 median of 25.5x. The 36% premium to the market typically reflects higher expected earnings growth or quality.
How does TDG's valuation compare to Industrials peers?
TransDigm Group Incorporated P/E of 34.7x compares to the Industrials sector median of 26.4x. The premium reflects expected growth above peers or stronger fundamentals. See the peer comparison table on this page for ticker-by-ticker P/E and PEG.
What is TDG's PEG ratio?
TDG PEG ratio is 1.11, based on a P/E of 34.7x and EPS growth of 25.2%. A PEG between 1 and 2 suggests valuation aligns with growth expectations — typically considered fair.
What is TDG's earnings yield?
TDG earnings yield is 2.88%, the inverse of its 34.7x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.