FLY vs RKLB vs TDG Stock Comparison

Firefly Aerospace, Rocket Lab and TransDigm Prices as of Oct 28, 2026 Peers: Industry group
FLY Firefly Aerospace Inc.
$19.85 -17.7% 1M -23.0% 1Y
Market cap
$3.30B
P/E
–
Revenue (TTM)
$287.01M
Div. yield
–
Space Industrials
2 wins
RKLB Rocket Lab Corp
$58.60 -18.8% 1M -8.1% 1Y
Market cap
$35.05B
P/E
–
Revenue (TTM)
$769.15M
Div. yield
–
Space Industrials
2 wins
TDG TransDigm Group INC
$1,137.98 +2.6% 1M -14.8% 1Y
Market cap
$62.90B
P/E
34.2x
Revenue (TTM)
$10.01B
Div. yield
–
Commercial Aerospace Industrials
5 wins

Head to Head

9 decided of 12

TransDigm leads on 5 of the 12 questions below (TransDigm 5, Firefly Aerospace 2, Rocket Lab 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionFLYRKLBTDGLeader
Larger companyMarket capitalisation $3.30B $35.05B $62.90B TDG
Cheaper on earningsLower P/E, profitable companies only -8.7x -223.0x 34.2x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — 25.9x –
Faster revenue growthRevenue growth, trailing twelve months +179.2% +52.5% +16.6% FLY
More profitableNet margin, trailing twelve months -129.1% -21.5% 19.1% TDG
Better return on capitalReturn on invested capital -25.8% -6.7% 15.5% TDG
Less leveragedLower net debt / EBITDA 2.1x 14.4x 6.1x FLY
Higher dividend yieldTrailing dividend yield 0.00% — 0.00% –
Better 1-year returnPrice return, last 12 months -23.0% -8.1% -14.8% RKLB
Better 5-year returnAnnualised price return, 5 years — +33.1%/yr +12.8%/yr RKLB
Less volatileAnnualised volatility, 1 year 106.9% 92.9% 27.2% TDG
Higher overall scoreMean of the five percentile scores vs peers 35/100 43/100 66/100 TDG

Percentile Scorecard

FLYRKLBTDG

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisFLYRKLBTDG
Valuation 15 #85 of 100 18 #82 of 100 53 #48 of 100
Growth 59 #40 of 97 52 #47 of 97 69 #31 of 97
Profitability 22 #75 of 96 31 #67 of 96 96 #5 of 96
Financial Health 69 #33 of 105 89 #13 of 105 17 #87 of 105
Shareholder Returns 11 #58 of 65 23 #50 of 65 95 #4 of 65
Overall 35 43 66
  • FLY ranked among 107 companies in Aerospace and Defense
  • RKLB ranked among 107 companies in Aerospace and Defense
  • TDG ranked among 107 companies in Aerospace and Defense

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodFLYRKLBTDGSPY
1 month -17.7%-18.8%+2.6% +0.9%
3 months +11.3%0.0%-10.0% +5.9%
6 months -40.7%-23.9%-0.4% +8.5%
Year to date -11.3%-16.0%-14.4% +13.3%
1 year -23.0%-8.1%-14.8% +12.4%
3 years —+1,308.7%+38.9% +88.1%
3 years, per year —+141.7%+11.6% +23.5%
5 years —+317.1%+82.4% +68.2%
5 years, per year —+33.1%+12.8% +11.0%
10 years ——+318.9% +263.4%
10 years, per year ——+15.4% +13.8%

Risk

MeasureFLYRKLBTDGSPY
Volatility, 1Y 106.9%92.9%27.2% 12.7%
Downside volatility, 1Y 98.7%90.5%29.0% 12.7%
Beta vs S&P 500, 1Y 3.463.920.75 1.00
Return / volatility, 1Y -0.21-0.09-0.54 0.98
Max drawdown, 5Y -73.0%-78.3%-33.6% -25.4%
From 52-week high -66.2%-61.0%-21.5% -0.9%
52-week high $58.81$150.23$1,450.00 $779.14
52-week low $16.31$39.48$1,076.01 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleFLYRKLBTDG
P/E now vs peer median -8.7xmedian 26.4x -223.0xmedian 26.4x 34.2xmedian 26.4x
P/S now vs peer median 11.5xmedian 3.0x 45.6xmedian 3.0x 6.3xmedian 3.0x
EV/EBITDA now vs peer median -9.2xmedian 14.5x -205.4xmedian 14.5x 18.5xmedian 14.5x
P/FCF now vs peer median -10.1xmedian 26.1x -94.4xmedian 26.1x 32.6xmedian 26.1x
P/B now vs peer median 2.7xmedian 2.5x 10.0xmedian 2.5x -6.4xmedian 2.5x
PEG now vs peer median —median 0.90 -26.96median 0.90 1.62median 0.90

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsFLYRKLBTDG
Revenue $287.01M $769.15M $10.01B
Gross profit $65.79M $286.62M $5.96B
Operating income -$338.66M -$223.49M $4.61B
Net income -$363.46M -$165.46M $2.13B
Free cash flow -$326.49M -$371.14M $1.93B
R&D $245.37M $312.42M –
EPS (diluted) $-2.29 $-0.26 $33.29
Cash & equivalents $459.82M $2.13B $2.77B
Total debt $27.00M $1.72M $33.49B
Shares (diluted) 161.78M 629.68M 57.40M
Enterprise value $224.18M $29.37B $50.99B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricFLYRKLBTDG
P/E -8.7x -223.0x 34.2x
P/FCF -10.1x -94.4x 32.6x
P/Operating cash flow -12.5x -157.6x 28.6x
P/S 11.5x 45.6x 6.3x
P/B 2.7x 10.0x -6.4x
P/Tangible book 3.1x 11.1x -4.3x
EV/EBITDA -9.2x -205.4x 18.5x
EV/EBIT -7.9x -146.5x 20.3x
EV/Revenue 9.4x 42.6x 9.4x
EV/FCF -8.2x -88.2x 48.6x
EV/Operating cash flow -10.2x -147.2x 42.6x
PEG (3Y EPS CAGR) – -26.96 1.62

Growth

14 metrics
MetricFLYRKLBTDG
Revenue growth (1Y) 179.2% 52.5% 16.6%
Revenue CAGR (3Y) – 49.2% 17.0%
Gross profit growth (1Y) 1,165% 95.7% 16.9%
Gross profit CAGR (3Y) – 109.3% 17.9%
Operating income growth (1Y) -51.0% -0.5% 16.7%
Operating income CAGR (3Y) – -11.7% 19.4%
Net income growth (1Y) -46.1% 28.5% 10.2%
Net income CAGR (3Y) – -0.4% 22.8%
EPS growth (1Y) 89.5% 41.5% 10.5%
EPS CAGR (3Y) – 8.3% 21.1%
Operating cash flow growth (1Y) -63.7% -100.8% 4.5%
Operating cash flow CAGR (3Y) – -44.7% 22.8%
Free cash flow growth (1Y) -77.2% -81.9% 1.1%
Free cash flow CAGR (3Y) – -45.7% 22.4%

Profitability

14 metrics
MetricFLYRKLBTDG
Gross margin 22.9% 37.3% 59.6%
EBITDA margin -102.3% -20.7% 50.7%
Operating margin -118.0% -29.1% 46.0%
Pretax margin -139.6% -24.9% 27.4%
Net margin -129.1% -21.5% 19.1%
FCF margin -113.8% -48.3% 19.3%
Operating cash flow margin -92.1% -28.9% 22.0%
Return on equity -31.2% -5.7% –
Return on assets -23.2% -4.7% 8.2%
Return on invested capital -25.8% -6.7% 15.5%
Return on capital employed -26.6% -7.5% 19.6%
Asset turnover 0.2x 0.2x 0.4x
Cash conversion (OCF / net income) 0.7x 1.3x 1.0x
Stock comp / revenue 16.1% 10.6% 1.5%

Financial Health

11 metrics
MetricFLYRKLBTDG
Debt / assets 1.6% 0.0% 125.2%
Debt / equity 0.0x 0.0x -3.4x
Net debt / EBITDA 2.1x 14.4x 6.1x
Debt / FCF -0.1x 0.0x 17.4x
Liabilities / assets 25.4% 16.6% 136.7%
Equity / assets 74.6% 83.4% -36.7%
Interest coverage -18.2x -13.9x 2.5x
Current ratio 2.7x 5.5x 3.0x
Quick ratio 2.4x 4.8x 1.9x
Cash ratio 2.2x 4.4x 1.1x
Altman Z-score 3.59 30.57 1.73

Shareholder Returns

7 metrics
MetricFLYRKLBTDG
Dividend yield – – –
Net buyback yield -36.0% -6.6% 2.7%
Shareholder yield -36.0% -6.6% 2.7%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusFLYRKLBTDG
Forward P/E – – 25.9xFY2026
EPS, next fiscal year $-1.90FY2026 $-0.28FY2026 $44.01FY2026
EPS growth, next FY – – +17.9%FY2026
EPS growth, the year after – – +7.9%
Revenue, next fiscal year $464.32MFY2026 $918.00MFY2026 $10.01BFY2026
Revenue growth, next FY +190.5%FY2026 +52.5%FY2026 +13.4%FY2026
Revenue growth, the year after +41.1% +51.6% +24.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersFLYRKLBTDG
Held by institutions 57.0% 51.2% 93.2%
Institutions holding 267 1,128 1,140
Change in shares held, QoQ +46.3% +10.9% +1.2%
Institutions buying 211 810 584
Institutions selling 34 238 367
Buyers to sellers 6.21 3.40 1.59

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

FLYRKLBTDG
FLY 1.00 0.76 0.09
RKLB 0.76 1.00 0.11
TDG 0.09 0.11 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, FLY, RKLB and TDG?

TransDigm (TDG) is the largest by market capitalisation: Firefly Aerospace (FLY) $3.30B, Rocket Lab (RKLB) $35.05B, TransDigm (TDG) $62.90B.

Which company is growing faster?

Firefly Aerospace (FLY) grew revenue fastest over the trailing twelve months: Firefly Aerospace (FLY) +179.2%, Rocket Lab (RKLB) +52.5%, TransDigm (TDG) +16.6%.

Which company is more profitable?

TransDigm (TDG) has the highest net margin (Firefly Aerospace (FLY) -129.1%, Rocket Lab (RKLB) -21.5%, TransDigm (TDG) 19.1%). On return on invested capital, TransDigm (TDG) leads (Firefly Aerospace (FLY) -25.8%, Rocket Lab (RKLB) -6.7%, TransDigm (TDG) 15.5%).

Which stock has performed better?

Over the past year Rocket Lab (RKLB) returned the most: Firefly Aerospace (FLY) -23.0%, Rocket Lab (RKLB) -8.1%, TransDigm (TDG) -14.8%. Over five years, Rocket Lab (RKLB) compounded fastest (Rocket Lab (RKLB) +33.1%/yr, TransDigm (TDG) +12.8%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, TransDigm (TDG) has been the steadiest (Firefly Aerospace (FLY) 106.9%, Rocket Lab (RKLB) 92.9%, TransDigm (TDG) 27.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, FLY, RKLB and TDG?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, TransDigm (TDG) leads on 5. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.