LIVE
HEI
HEICO Corporation · Industrials - Aerospace Components
$337.10
+15.30% this month
VERSUS
⟷
COMPARE
TDG
TransDigm Group Incorporated · Industrials - Aerospace Components
$1,328.31
+12.66% this month
Scoreboard verdict
Across AI score, momentum, valuation, upside, operating margin
HEI
2
TDG
2
Comparison scoreboard
MIXED SETUPAI Score
HEI ✓60.6
TDG 58.0
1Y Return
HEI ✓+8.44%
TDG -6.81%
Fwd P/E
HEI 49.22
TDG ✓26.75
Target Up.
HEI +14.54%
TDG ✓+21.33%
Op. Margin
HEI N/A
TDG 46.66%
Metrics last refreshed: 6/20/2026
Quick take
HEI vs TDG Stock Comparison: AI Score, Valuation, Performance and Upside
Both HEICO and TDG are elite aerospace component businesses with strong moats, but with distinctly different strategies — HEICO uses FAA PMA parts to offer lower-cost alternatives to OEM parts, while TransDigm acquires sole-source proprietary parts and aggressively manages pricing. Both have exceptional long-term returns but very different risk profiles.
HEI vs TDG compares two elite aerospace component franchises: HEICO's cost-alternative PMA strategy versus TransDigm's sole-source proprietary pricing model, both compounding returns through niche aerospace markets.
Live analysis · updated 6/20/2026
HEI and TDG are closely matched — they split the tracked metrics evenly. HEI has delivered stronger 1-year price return (+8.44% vs -6.81%), though TDG trades at the lower forward P/E (26.75x vs 49.22x). Analyst consensus implies meaningfully more upside for TDG (+21.33%) than for HEI (+14.54%).
Normalized 1Y performance
HEI
TDG
Recent returns
HEI
TDG
Analyst price targets & sentiment
HEI · 20 analysts
STRONG BUYHOLDSTRONG SELL
Buy (1.8/5.0)
Price target range
analyst low$290.00
analyst high$471.00
analyst mean$386.10
current price$337.10
+14.5% upside to analyst mean
TDG · 22 analysts
STRONG BUYHOLDSTRONG SELL
Buy (1.6/5.0)
Price target range
analyst low$1,300.00
analyst high$1,727.00
analyst mean$1,524.00
current price$1,328.31
+21.3% upside to analyst mean
Who should consider this stock?
HEI may suit investors who:
- →Want exposure to a high-quality, family-controlled aerospace components compounder with lower leverage
- →Value HEICO's dual-strategy of PMA alternatives and defense electronics acquisition
- →Prefer a less controversial, lower-leverage aerospace parts business versus TransDigm's high-debt model
TDG may suit investors who:
- →Want the maximum pricing power and EBITDA margin profile in aerospace aftermarket components
- →Are comfortable with TransDigm's high leverage and aggressive sole-source pricing strategy
- →Value the frequent special dividend distributions enabled by TransDigm's exceptional cash generation
Performance & AI score
| Metric | HEI | TDG |
|---|---|---|
| AI score | 60.6 | 58.0 |
| AI rank | #150 | #206 |
| Latest close | $337.10 | $1,328.31 |
| 1M return | +15.30% | +12.66% |
| 6M return | +9.88% | +5.28% |
| 1Y return | +8.44% | -6.81% |
$10,000 invested — hypothetical growth (dividends reinvested)
How much would $10,000 be worth today if invested at the start of each period, with all dividends reinvested?
| Period | HEI | TDG |
|---|---|---|
| 1Y ago | $10.85K (+8.5%) started 2025-06-18 | $9.39K (-6.1%) started 2025-06-18 |
| 5Y ago | $24.71K (+147.1%) started 2021-06-18 | $25.18K (+151.8%) started 2021-06-21 |
| 10Y ago | $102.96K (+929.6%) started 2016-06-20 | $121.93K (+1119.3%) started 2016-06-20 |
Hypothetical — past performance does not guarantee future results.
Valuation & upside potential
| Metric | HEI | TDG |
|---|---|---|
| Market cap | $47.08B | $70.26B |
| Trailing P/E | 60.20 | 39.21 |
| Forward P/E | 49.22 | 26.75 |
| Price/Sales | 9.59 | 9.82 |
| EV/Revenue | 10.15 | 10.35 |
| Analyst target | $386.10 | $1,524.00 |
| Target upside | +14.54% | +21.33% |
Growth, profitability & risk
| Metric | HEI | TDG |
|---|---|---|
| Revenue growth | 25.30% | 18.30% |
| Earnings growth | 48.20% | 11.50% |
| EPS growth | +48.20% | +11.50% |
| FCF margin | +14.42% | +16.05% |
| Operating margin | N/A | 46.66% |
| Profit margin | 16.08% | 21.91% |
| ROIC proxy | 17.21% | N/A |
| Return on equity | 17.21% | N/A |
| Dividend yield | 0.07% | N/A |
| Beta | 1.03 | 0.90 |
| Debt/equity | 47.99 | N/A |
| Current ratio | 2.92 | 3.52 |
| Quick ratio | 1.19 | 2.43 |
Drawdown & downside risk
Lower drawdown and smaller single-period drops generally indicate a smoother ride, though they do not guarantee lower future risk.
1Y risk snapshot
HEI max drawdown27.11%
TDG max drawdown30.10%
HEI max wkly drop9.54%
TDG max wkly drop13.55%
5Y risk snapshot
HEI max drawdown27.11%
TDG max drawdown30.10%
HEI max wkly drop11.77%
TDG max wkly drop16.63%
10Y risk snapshot
HEI max drawdown57.73%
TDG max drawdown62.64%
HEI max wkly drop31.86%
TDG max wkly drop46.82%
Performance metrics by period
| Period | Metric | HEI | TDG |
|---|---|---|---|
| 1Y | Growth | +8.44% | -6.09% |
| CAGR | +8.45% | -6.10% | |
| Sharpe ratio | 0.27 | -0.22 | |
| Max drawdown | 27.11% | 30.10% | |
| Max daily drop | 9.21% | 11.94% | |
| Max wkly drop | 9.54% | 13.55% | |
| 5Y | Growth | +145.75% | +122.88% |
| CAGR | +19.70% | +17.41% | |
| Sharpe ratio | 0.63 | 0.55 | |
| Max drawdown | 27.11% | 30.10% | |
| Max daily drop | 9.21% | 11.94% | |
| Max wkly drop | 11.77% | 16.63% | |
| 10Y | Growth | +915.03% | +660.59% |
| CAGR | +26.10% | +22.51% | |
| Sharpe ratio | 0.76 | 0.64 | |
| Max drawdown | 57.73% | 62.64% | |
| Max daily drop | 16.38% | 21.97% | |
| Max wkly drop | 31.86% | 46.82% |
Business comparison
| Category | HEI | TDG |
|---|---|---|
| Company | HEICO Corporation | TransDigm Group Incorporated |
| Sector | Industrials - Aerospace Components | Industrials |
| Industry | N/A | Aerospace & Defense |
| Core business | HEICO is a specialty aerospace components company known for manufacturing FAA-approved Parts Manufacturer Approval (PMA) parts at lower cost than original equipment manufacturers, serving airlines and MRO providers, alongside a defense electronics division. | TransDigm acquires and operates highly engineered, proprietary aerospace components with significant aftermarket content, using a value-based pricing strategy that captures maximum value from sole-source positions on aircraft platforms. |
| Investor focus | Investors track HEICO's organic revenue growth in flight support and electronic technologies segments, acquisition pipeline, and margins as the company continues acquiring niche aerospace businesses. | Investors track TransDigm's organic growth (historically driven by aftermarket price increases), acquisition pipeline, EBITDA margin expansion, and the company's high-leverage capital structure with frequent special dividends. |
HEI strengths
- →FAA-approved PMA parts provide OEM-approved lower-cost alternatives that airlines adopt to reduce maintenance costs
- →Strong acquisition track record of acquiring niche aerospace and defense component businesses
- →Family-controlled management with long-term owner-operator mindset and disciplined capital deployment
TDG strengths
- →Exceptional ability to acquire niche, sole-source aerospace components and apply value-based pricing discipline
- →Proprietary parts installed on aircraft create multi-decade aftermarket revenue streams as airlines must buy replacement parts
- →EBITDA margin profile is among the best in industrials, reflecting the pricing power of sole-source positions
Risks to watch — HEI
- →PMA part approvals take time and regulatory effort, limiting near-term organic growth acceleration
- →Airlines adopting PMA parts reduce spending with OEMs like GE or Safran, creating some OEM push-back
- →Premium valuation reflects the quality franchise and growth track record that must be sustained
Risks to watch — TDG
- →High leverage through significant acquisition-related debt creates financial risk in downturns
- →Pentagon scrutiny of TransDigm's pricing practices on government contracts has created regulatory and reputational risk
- →Acquisition-driven growth requires continuous deal flow at attractive prices in a competitive market for aerospace assets
Frequently asked questions
Free public comparison
Want deeper AI forecasts?
This comparison page is public and free forever. Subscribers can unlock saved watchlists, full AI rankings, detailed forecasts, and interactive analysis tools.
More comparisons
Browse all 1,000 comparisons →