BA
The Boeing Company
BA offers stronger fundamentals, but that advantage does not outweigh its weaker overall profile.
TDG
TransDigm Group Incorporated
TDG has the edge over BA overall, supported by stronger valuation and stronger modeled upside.
BA Fundamentals
| Metric | Status |
|---|---|
| Stable | |
| Healthy | |
| Stable | |
| Under pressure |
BA's profitability is currently healthy, and its revenue and cash flow are stable, but its balance sheet is under pressure.
TDG Fundamentals
| Metric | Status |
|---|---|
| Healthy | |
| Strong | |
| Healthy | |
| Weak |
TDG's revenue, profitability and cash flow are currently healthy, but its balance sheet is weak.
BA PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Current | 18x | $172 | — |
| Cheap | 51x | $496 | +189% |
| Fair | 82x | $790 | +360% |
| Expensive | 91x | $876 | +411% |
Historical ranges are pointers, not guarantees.
BA has the edge over TDG in the historical PE scenario, which offers more potential upside but is not a forecast.
TDG PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Current | 34x | $1,203 | — |
| Cheap | 39x | $1,391 | +16% |
| Fair | 48x | $1,689 | +40% |
| Expensive | 57x | $2,012 | +67% |
Historical ranges are pointers, not guarantees.
TDG's PE is in its cheap range at 34x.
BA Forward outlook
| Metric | Outlook |
|---|---|
| -- | |
| Returning to profit | |
| Growth | |
| Improving | |
| Limited | |
| Low |
Analysts expect BA to return to profit, with revenue growing. However, they disagree widely on these estimates.
TDG Forward outlook
There aren't enough analyst estimates for TDG to show an outlook.
BA Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Q3 2026 | $9.66 | +$23.38 |
| Q2 2026 | $2.78 | +$19.33 |
| Q1 2026 | $2.53 | +$20.49 |
| Q4 2025 | $2.48 | +$20.84 |
| Q3 2025 | -$13.72 | -$0.83 |
| Q2 2025 | -$16.55 | -$10.93 |
| Q1 2025 | -$17.96 | -$14.42 |
| Q4 2024 | -$18.36 | -$14.69 |
BA has returned to profit: it earned $9.66 per share over the past year, after losing money the year before.
TDG Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Q3 2026 | $35.51 | +11% |
| Q2 2026 | $32.96 | +9.3% |
| Q1 2026 | $32.04 | +8.1% |
| Q4 2025 | $31.08 | +9.6% |
| Q3 2025 | $32.08 | +25% |
| Q2 2025 | $30.15 | +12% |
| Q1 2025 | $29.64 | +18% |
| Q4 2024 | $28.37 | +20% |
TDG has the edge over BA on earnings, with more consistent year-over-year improvement.
BA Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $24.2B | +3.9% |
| Q2 2026 | $24.6B | +8% |
| Q1 2026 | $22.2B | +14% |
| Q4 2025 | $23.9B | +57% |
| Q3 2025 | $23.3B | +30% |
| Q2 2025 | $22.7B | +35% |
| Q1 2025 | $19.5B | +18% |
| Q4 2024 | $15.2B | -31% |
BA's revenue has grown year over year for seven quarters in a row: $24.2B last quarter, up 3.9% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 1.5% | +22 points |
| Q2 2026 | 0.6% | +1.4 points |
| Q1 2026 | 2% | -0.3 points |
| Q4 2025 | 37% | +61 points |
| Q3 2025 | -21% | +12 points |
| Q2 2025 | -0.8% | +5.7 points |
| Q1 2025 | 2.4% | +2.9 points |
| Q4 2024 | -25% | -26 points |
BA's operating margin was 1.5% last quarter, up 22 points from the same quarter a year ago.
TDG Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $3B | +23% |
| Q2 2026 | $2.7B | +23% |
| Q1 2026 | $2.5B | +18% |
| Q4 2025 | $2.3B | +14% |
| Q3 2025 | $2.4B | +11% |
| Q2 2025 | $2.2B | +9.3% |
| Q1 2025 | $2.2B | +12% |
| Q4 2024 | $2B | +12% |
TDG's revenue has grown year over year for 22 quarters in a row: $3B last quarter, up 23% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 46% | -2 points |
| Q2 2026 | 45% | -1.7 points |
| Q1 2026 | 46% | +0.2 points |
| Q4 2025 | 46% | -2.9 points |
| Q3 2025 | 48% | +4.5 points |
| Q2 2025 | 46% | +0.8 points |
| Q1 2025 | 46% | +0.9 points |
| Q4 2024 | 49% | +4.6 points |
TDG has the edge over BA on profitability, with a higher operating margin.
BA Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $464M | +95% |
| Q2 2026 | $631M | +$831M |
| Q1 2026 | -$1.5B | +$836M |
| Q4 2025 | $375M | +$4.5B |
| Q3 2025 | $238M | +$2.2B |
| Q2 2025 | -$200M | +$4.1B |
| Q1 2025 | -$2.3B | +$1.6B |
| Q4 2024 | -$4.1B | -239% |
BA has the edge over TDG on cash flow, with more consistent year-over-year improvement.
TDG Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $427M | -3.2% |
| Q2 2026 | $650M | +13% |
| Q1 2026 | $64M | -30% |
| Q4 2025 | $772M | +8.7% |
| Q3 2025 | $441M | -17% |
| Q2 2025 | $573M | +0.9% |
| Q1 2025 | $92M | -49% |
| Q4 2024 | $710M | +18% |
TDG's free cash flow has been positive every quarter for seven years: $1.9B over the past year, up 5.3% from the year before.
BA Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | +0.3% | +2.1M shares |
| 1 year | +4.3% | +32.8M shares |
| 3 years | +31% | +186M shares |
| 5 years | +35% | +204M shares |
| Available history | +40% | +227M shares |
BA has 793M diluted shares, up 4.3% from a year ago.
| Quarter | Spent |
|---|---|
| Q4 2019 | — |
TDG Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | +0.3% | +200K shares |
| 1 year | -1% | -600K shares |
| 3 years | +0.7% | +400K shares |
| 5 years | -1.4% | -800K shares |
| Available history | +0.3% | +200K shares |
TDG has the edge over BA on shareholder dilution, with a more favorable share count trend.
| Quarter | Spent |
|---|---|
| Q3 2026 | $943M |
| Q2 2026 | $1.1B |
| Q1 2026 | $615M |
| Q4 2025 | $106M |
| Q3 2025 | — |
| Q2 2025 | $131M |
| Q1 2025 | $53M |
| Q4 2024 | $316M |
TDG spent $2.8B buying back its own shares over the past year, about six times what it spent the year before.
BA Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | 3.0x | Elevated |
| Q2 2026 | 5.7x | High |
| Q1 2026 | 6.0x | High |
| Q4 2025 | 6.9x | High |
| Q2 2024 | 361.8x | High |
| Q1 2024 | 36.1x | High |
| Q4 2023 | 36.4x | High |
| Q3 2023 | 96.1x | High |
BA has the edge over TDG on leverage, with a lower net debt burden relative to earnings.
TDG Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | 6.0x | High |
| Q2 2026 | 6.0x | High |
| Q1 2026 | 5.7x | High |
| Q4 2025 | 5.8x | High |
| Q3 2025 | 5.9x | High |
| Q2 2025 | 5.0x | High |
| Q1 2025 | 5.3x | High |
| Q4 2024 | 5.4x | High |
TDG's net debt is about 6.0 years of its operating earnings (EBITDA), up from 5.8 years a year ago.
BA Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 31.1 | Neutral |
| Stochastic | 9.6 | Oversold |
BA's weekly RSI is 31 (neutral) and its Stochastic is 10 (oversold).
TDG Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 51.4 | Neutral |
| Stochastic | 45.9 | Neutral |
TDG's weekly RSI is 51 (neutral) and its Stochastic is 46 (neutral).
BA PE vs Industrials Sector
| Metric | BA | Sector median | Relative |
|---|---|---|---|
| PE | 18x | 24x | 26% below |
| PE % | 0 | 58 | 58 pts below |
BA has the edge over TDG on valuation relative to its sector.
TDG PE vs Industrials Sector
| Metric | TDG | Sector median | Relative |
|---|---|---|---|
| PE | 34x | 24x | 41% above |
| PE % | 7 | 58 | 51 pts below |
TDG is trading at 34x earnings, a 41% premium to the Industrials sector's median of 24x.
BA Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $184.6 | 7.1% below |
| 20 week MA | $203.8 | 16% below |
| 50 week MA | $215.5 | 20% below |
| 100 week MA | $205.9 | 17% below |
| 200 week MA | $200.6 | 14% below |
BA is in a downtrend: it's below all five of its weekly moving averages, and 14% below its 200-week average.
TDG Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $1,138.2 | 5.7% above |
| 20 week MA | $1,185.4 | 1.5% above |
| 50 week MA | $1,239.0 | 2.9% below |
| 100 week MA | $1,304.6 | 7.8% below |
| 200 week MA | $1,175.0 | 2.4% above |
TDG has the edge over BA on trend strength, trading above more of its moving averages.
BA Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $330.1 | $217.2 | -34% |
| 2021 | $217.2 | $204.2 | -6% |
| 2022 | $204.2 | $189.1 | -7.4% |
| 2023 | $189.1 | $260.7 | +38% |
| 2024 | $260.7 | $180.7 | -31% |
| 2025 | $180.7 | $216.4 | +20% |
| 2026 YTD | $216.4 | $171.6 | -21% |
BA has finished lower in four of the last six years. It's down 21% so far in 2026.
TDG Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $564.0 | $606.7 | +7.6% |
| 2021 | $606.7 | $628.0 | +3.5% |
| 2022 | $628.0 | $620.3 | -1.2% |
| 2023 | $620.3 | $1,011.6 | +63% |
| 2024 | $1,011.6 | $1,290.9 | +28% |
| 2025 | $1,290.9 | $1,309.2 | +1.4% |
| 2026 YTD | $1,309.2 | $1,203.0 | -8.1% |
TDG has the edge over BA on returns for 2026, with the stronger performance.