BA vs OSIS vs TDG Stock Comparison

Boeing, Osi Systems and TransDigm Prices as of Oct 26, 2026 Peers: Industry group
BA Boeing Co
$188.24 -4.9% 1M -15.0% 1Y
Market cap
$132.91B
P/E
63.6x
Revenue (TTM)
$94.00B
Div. yield
–
Commercial Aerospace Industrials
3 wins
OSIS Osi Systems Inc
$198.09 +0.4% 1M -21.1% 1Y
Market cap
$3.33B
P/E
21.5x
Revenue (TTM)
$1.79B
Div. yield
–
Defense Industrials
5 wins
TDG TransDigm Group INC
$1,129.53 +1.2% 1M -16.9% 1Y
Market cap
$64.97B
P/E
34.0x
Revenue (TTM)
$10.01B
Div. yield
–
Commercial Aerospace Industrials
3 wins

Head to Head

11 decided of 12

Osi Systems leads on 5 of the 12 questions below (Osi Systems 5, Boeing 3, TransDigm 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionBAOSISTDGLeader
Larger companyMarket capitalisation $132.91B $3.33B $64.97B BA
Cheaper on earningsLower P/E, profitable companies only 63.6x 21.5x 34.0x OSIS
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 17.0x 25.7x OSIS
Faster revenue growthRevenue growth, trailing twelve months +24.8% +4.3% +16.6% BA
More profitableNet margin, trailing twelve months 2.2% 8.7% 19.1% TDG
Better return on capitalReturn on invested capital 7.7% 9.4% 15.5% TDG
Less leveragedLower net debt / EBITDA 3.8x 2.4x 6.1x OSIS
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -15.0% -21.1% -16.9% BA
Better 5-year returnAnnualised price return, 5 years -1.8%/yr +15.9%/yr +12.4%/yr OSIS
Less volatileAnnualised volatility, 1 year 34.5% 43.6% 27.2% TDG
Higher overall scoreMean of the five percentile scores vs peers 48/100 75/100 66/100 OSIS

Percentile Scorecard

BAOSISTDG

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

AxisBAOSISTDG
Valuation 44 #56 of 100 87 #14 of 100 54 #47 of 100
Growth 81 #19 of 97 67 #33 of 97 68 #32 of 97
Profitability 54 #45 of 96 79 #21 of 96 96 #5 of 96
Financial Health 12 #93 of 105 44 #59 of 105 17 #87 of 105
Shareholder Returns – 98 #2 of 64 95 #4 of 64
Overall 48 75 66
  • BA ranked among 107 companies in Aerospace and Defense
  • OSIS 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

PeriodBAOSISTDGSPY
1 month -4.9%+0.4%+1.2% -0.8%
3 months -11.0%-8.8%-12.2% +3.5%
6 months -18.6%-32.0%-2.5% +7.0%
Year to date -13.3%-22.3%-15.1% +12.2%
1 year -15.0%-21.1%-16.9% +13.0%
3 years +4.8%+86.2%+37.9% +86.3%
3 years, per year +1.6%+23.0%+11.3% +23.1%
5 years -8.9%+109.0%+79.5% +68.6%
5 years, per year -1.8%+15.9%+12.4% +11.0%
10 years +29.3%+197.5%+316.7% +258.0%
10 years, per year +2.6%+11.5%+15.3% +13.6%

Risk

MeasureBAOSISTDGSPY
Volatility, 1Y 34.5%43.6%27.2% 12.7%
Downside volatility, 1Y 33.1%44.4%29.0% 12.7%
Beta vs S&P 500, 1Y 1.231.170.75 1.00
Return / volatility, 1Y -0.43-0.48-0.62 1.02
Max drawdown, 5Y -50.3%-37.9%-33.6% -25.4%
From 52-week high -25.3%-36.0%-22.1% -1.8%
52-week high $252.15$309.68$1,450.00 $779.14
52-week low $179.12$192.30$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.

MultipleBAOSISTDG
P/E now vs peer median 71.2xmedian 26.8x 21.2xmedian 26.8x 33.9xmedian 26.8x
P/S now vs peer median 1.6xmedian 2.9x 1.8xmedian 2.9x 6.2xmedian 2.9x
EV/EBITDA now vs peer median 25.7xmedian 15.2x 14.3xmedian 15.2x 18.4xmedian 15.2x
P/FCF now vs peer median -708.5xmedian 25.5x 13.9xmedian 25.5x 32.4xmedian 25.5x
P/B now vs peer median 24.3xmedian 2.5x 3.8xmedian 2.5x -6.4xmedian 2.5x
PEG now vs peer median 2.15median 0.94 1.13median 0.94 1.60median 0.94

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 monthsBAOSISTDG
Revenue $94.00B $1.79B $10.01B
Gross profit $4.40B $593.09M $5.96B
Operating income $4.60B $218.97M $4.61B
Net income $2.43B $154.71M $2.13B
Free cash flow -$210.00M $227.35M $1.93B
R&D $3.69B $79.14M –
EPS (diluted) $2.64 $8.95 $33.29
Cash & equivalents $7.24B $359.83M $2.77B
Total debt $45.90B $3.45B $33.49B
Shares (diluted) 790.80M 17.28M 57.40M
Enterprise value $39.60B $2.16B $52.97B

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
MetricBAOSISTDG
P/E 71.2x 21.2x 33.9x
P/FCF -708.5x 13.9x 32.4x
P/Operating cash flow 40.9x 11.4x 28.4x
P/S 1.6x 1.8x 6.2x
P/B 24.3x 3.8x -6.4x
P/Tangible book 32.5x 4.9x -4.3x
EV/EBITDA 25.7x 14.3x 18.4x
EV/EBIT 38.0x 17.3x 20.2x
EV/Revenue 1.9x 2.1x 9.3x
EV/FCF -831.7x 16.7x 48.3x
EV/Operating cash flow 48.0x 13.8x 42.4x
PEG (3Y EPS CAGR) 2.15 1.13 1.60

Growth

14 metrics
MetricBAOSISTDG
Revenue growth (1Y) 24.8% 4.3% 16.6%
Revenue CAGR (3Y) 8.5% 11.8% 17.0%
Gross profit growth (1Y) 1,902% 1.0% 16.9%
Gross profit CAGR (3Y) -3.6% 11.3% 17.9%
Operating income growth (1Y) 149.8% 0.7% 16.7%
Operating income CAGR (3Y) 49.8% 17.4% 19.4%
Net income growth (1Y) 122.8% 3.4% 10.2%
Net income CAGR (3Y) 36.4% 19.0% 22.8%
EPS growth (1Y) 118.3% 2.8% 10.5%
EPS CAGR (3Y) 33.1% 18.8% 21.1%
Operating cash flow growth (1Y) 158.8% 182.7% 4.5%
Operating cash flow CAGR (3Y) -26.6% 42.8% 22.8%
Free cash flow growth (1Y) 97.5% 305.3% 1.1%
Free cash flow CAGR (3Y) -26.6% 53.7% 22.4%

Profitability

14 metrics
MetricBAOSISTDG
Gross margin 4.7% 33.2% 59.6%
EBITDA margin 7.2% 14.8% 50.7%
Operating margin 4.9% 12.3% 46.0%
Pretax margin 3.0% 10.8% 27.4%
Net margin 2.2% 8.7% 19.1%
FCF margin -0.2% 12.7% 19.3%
Operating cash flow margin 3.9% 15.4% 22.0%
Return on equity 40.4% 17.9% –
Return on assets 1.5% 6.1% 8.2%
Return on invested capital 7.7% 9.4% 15.5%
Return on capital employed 8.2% 10.9% 19.6%
Asset turnover 0.6x 0.7x 0.4x
Cash conversion (OCF / net income) 1.5x 1.8x 1.0x
Stock comp / revenue 0.5% 1.5% 1.5%

Financial Health

11 metrics
MetricBAOSISTDG
Debt / assets 27.7% 40.0% 125.2%
Debt / equity 7.5x 1.2x -3.4x
Net debt / EBITDA 3.8x 2.4x 6.1x
Debt / FCF -218.6x 4.4x 17.4x
Liabilities / assets 96.3% 66.7% 136.7%
Equity / assets 3.7% 33.3% -36.7%
Interest coverage 1.8x 8.3x 2.5x
Current ratio 1.1x 3.2x 3.0x
Quick ratio 0.3x 2.2x 1.9x
Cash ratio 0.2x 0.7x 1.1x
Altman Z-score 1.47 3.14 1.72

Shareholder Returns

7 metrics
MetricBAOSISTDG
Dividend yield – – –
Net buyback yield – 3.7% 2.7%
Shareholder yield 0.0% 3.7% 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.

ConsensusBAOSISTDG
Forward P/E – 17.0xFY2027 25.7xFY2026
EPS, next fiscal year $-0.99FY2026 $11.62FY2027 $44.01FY2026
EPS growth, next FY -183.2%FY2026 +12.3%FY2027 +17.9%FY2026
EPS growth, the year after – +7.2% +7.9%
Revenue, next fiscal year $91.05BFY2026 $1.85BFY2027 $10.01BFY2026
Revenue growth, next FY +1.8%FY2026 +3.5%FY2027 +13.4%FY2026
Revenue growth, the year after +18.5% +16.1% +24.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersBAOSISTDG
Held by institutions 75.6% 100.0% 93.2%
Institutions holding 2,626 366 1,140
Change in shares held, QoQ +2.3% +0.7% +1.2%
Institutions buying 1,327 191 584
Institutions selling 843 134 367
Buyers to sellers 1.57 1.43 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.

BAOSISTDG
BA 1.00 0.19 0.38
OSIS 0.19 1.00 0.15
TDG 0.38 0.15 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, BA, OSIS and TDG?

Boeing (BA) is the largest by market capitalisation: Boeing (BA) $132.91B, Osi Systems (OSIS) $3.33B, TransDigm (TDG) $64.97B.

Which stock is cheaper, BA, OSIS and TDG?

Osi Systems (OSIS) trades on the lowest price-to-earnings ratio (Boeing (BA) 63.6x, Osi Systems (OSIS) 21.5x, TransDigm (TDG) 34.0x). On next year's consensus earnings, Osi Systems (OSIS) is cheapest (Osi Systems (OSIS) 17.0x, TransDigm (TDG) 25.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Boeing (BA) grew revenue fastest over the trailing twelve months: Boeing (BA) +24.8%, Osi Systems (OSIS) +4.3%, TransDigm (TDG) +16.6%.

Which company is more profitable?

TransDigm (TDG) has the highest net margin (Boeing (BA) 2.2%, Osi Systems (OSIS) 8.7%, TransDigm (TDG) 19.1%). On return on invested capital, TransDigm (TDG) leads (Boeing (BA) 7.7%, Osi Systems (OSIS) 9.4%, TransDigm (TDG) 15.5%).

Which stock has performed better?

Over the past year Boeing (BA) returned the most: Boeing (BA) -15.0%, Osi Systems (OSIS) -21.1%, TransDigm (TDG) -16.9%. Over five years, Osi Systems (OSIS) compounded fastest (Boeing (BA) -1.8%/yr, Osi Systems (OSIS) +15.9%/yr, TransDigm (TDG) +12.4%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, TransDigm (TDG) has been the steadiest (Boeing (BA) 34.5%, Osi Systems (OSIS) 43.6%, TransDigm (TDG) 27.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, BA, OSIS 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, Osi Systems (OSIS) 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.