NOC vs OSIS vs TDG Stock Comparison

Northrop Grumman, Osi Systems and TransDigm Prices as of Nov 4, 2026 Peers: Industry group
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OSIS Osi Systems Inc
$202.92 +2.6% 1M -26.9% 1Y
Market cap
$3.11B
P/E
19.6x
Revenue (TTM)
$1.80B
Div. yield
–
Defense Industrials
2 wins
TDG TransDigm Group INC
$1,217.33 +11.3% 1M -5.8% 1Y
Market cap
$68.70B
P/E
35.9x
Revenue (TTM)
$10.01B
Div. yield
–
Commercial Aerospace Industrials
5 wins

Head to Head

11 decided of 12

TransDigm leads on 5 of the 12 questions below (TransDigm 5, Northrop Grumman 4, Osi Systems 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionNOCOSISTDGLeader
Larger companyMarket capitalisation $75.85B $3.11B $68.70B NOC
Cheaper on earningsLower P/E, profitable companies only 16.8x 19.6x 35.9x NOC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 17.1x 17.5x 27.7x NOC
Faster revenue growthRevenue growth, trailing twelve months +6.5% +2.9% +16.6% TDG
More profitableNet margin, trailing twelve months 10.4% 8.8% 19.1% TDG
Better return on capitalReturn on invested capital 12.2% 9.8% 15.5% TDG
Less leveragedLower net debt / EBITDA 1.7x 2.6x 6.1x NOC
Higher dividend yieldTrailing dividend yield 0.02% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -8.9% -26.9% -5.8% TDG
Better 5-year returnAnnualised price return, 5 years +7.6%/yr +16.2%/yr +12.9%/yr OSIS
Less volatileAnnualised volatility, 1 year 29.0% 41.7% 28.0% TDG
Higher overall scoreMean of the five percentile scores vs peers 60/100 75/100 65/100 OSIS

Percentile Scorecard

NOCOSISTDG

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

AxisNOCOSISTDG
Valuation 81 #20 of 101 86 #15 of 101 52 #49 of 101
Growth 38 #61 of 98 68 #32 of 98 66 #34 of 98
Profitability 77 #23 of 97 81 #19 of 97 96 #5 of 97
Financial Health 39 #66 of 107 43 #62 of 107 19 #87 of 107
Shareholder Returns 63 #25 of 66 99 #2 of 66 94 #5 of 66
Overall 60 75 65
  • NOC ranked among 108 companies in Aerospace and Defense
  • OSIS ranked among 108 companies in Aerospace and Defense
  • TDG ranked among 108 companies in Aerospace and Defense

Price Performance

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

Returns

PeriodNOCOSISTDGSPY
1 month +10.4%+2.6%+11.3% -1.0%
3 months -5.7%-13.7%-3.0% -0.4%
6 months -6.1%-15.5%-1.3% +4.5%
Year to date -7.8%-20.4%-8.5% +12.4%
1 year -8.9%-26.9%-5.8% +13.6%
3 years +11.7%+87.1%+38.0% +76.4%
3 years, per year +3.8%+23.2%+11.3% +20.8%
5 years +44.3%+111.5%+83.0% +63.7%
5 years, per year +7.6%+16.2%+12.9% +10.4%
10 years +133.4%+206.6%+355.2% +267.7%
10 years, per year +8.8%+11.9%+16.4% +13.9%

Risk

MeasureNOCOSISTDGSPY
Volatility, 1Y 29.0%41.7%28.0% 12.8%
Downside volatility, 1Y 29.0%44.8%29.4% 12.7%
Beta vs S&P 500, 1Y -0.061.150.73 1.00
Return / volatility, 1Y -0.31-0.64-0.21 1.06
Max drawdown, 5Y -38.4%-37.9%-33.6% -25.4%
From 52-week high -31.6%-34.5%-16.0% -1.6%
52-week high $768.02$309.68$1,450.00 $779.14
52-week low $473.40$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.

MultipleNOCOSISTDG
P/E now vs peer median 16.5xmedian 25.9x 20.3xmedian 25.9x 36.6xmedian 25.9x
P/S now vs peer median 1.7xmedian 2.8x 1.8xmedian 2.8x 6.7xmedian 2.8x
EV/EBITDA now vs peer median 13.9xmedian 14.7x 14.7xmedian 14.7x 19.3xmedian 14.7x
P/FCF now vs peer median 19.5xmedian 26.9x 13.0xmedian 26.9x 34.9xmedian 26.9x
P/B now vs peer median 4.0xmedian 2.5x 4.1xmedian 2.5x -6.9xmedian 2.5x
PEG now vs peer median 16.22median 0.94 0.94median 0.94 1.73median 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 monthsNOCOSISTDG
Revenue $43.59B $1.80B $10.01B
Gross profit $8.73B $593.71M $5.96B
Operating income $4.63B $219.47M $4.61B
Net income $4.52B $158.73M $2.13B
Free cash flow $3.83B $245.20M $1.93B
R&D – $78.14M –
EPS (diluted) $31.74 $9.77 $33.29
Cash & equivalents $3.74B $236.30M $2.77B
Total debt $14.43B $999.57M $33.49B
Shares (diluted) 142.40M 16.25M 57.40M
Enterprise value $63.31B $1.76B $56.70B

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
MetricNOCOSISTDG
P/E 16.5x 20.3x 36.6x
P/FCF 19.5x 13.0x 34.9x
P/Operating cash flow 14.2x 10.8x 30.6x
P/S 1.7x 1.8x 6.7x
P/B 4.0x 4.1x -6.9x
P/Tangible book 4.0x 5.4x -4.6x
EV/EBITDA 13.9x 14.7x 19.3x
EV/EBIT 18.5x 17.7x 21.3x
EV/Revenue 2.0x 2.2x 9.8x
EV/FCF 22.3x 15.9x 50.9x
EV/Operating cash flow 16.2x 13.1x 44.6x
PEG (3Y EPS CAGR) 16.22 0.94 1.73

Growth

14 metrics
MetricNOCOSISTDG
Revenue growth (1Y) 6.5% 2.9% 16.6%
Revenue CAGR (3Y) 4.1% 11.9% 17.0%
Gross profit growth (1Y) 9.8% 0.8% 16.9%
Gross profit CAGR (3Y) 3.4% 10.4% 17.9%
Operating income growth (1Y) 6.8% -0.4% 16.7%
Operating income CAGR (3Y) 6.4% 16.3% 19.4%
Net income growth (1Y) 12.5% 4.2% 10.2%
Net income CAGR (3Y) -1.1% 19.3% 22.8%
EPS growth (1Y) 13.3% 12.1% 10.5%
EPS CAGR (3Y) 1.0% 21.5% 21.1%
Operating cash flow growth (1Y) 53.2% 94.8% 4.5%
Operating cash flow CAGR (3Y) 12.5% 46.2% 22.8%
Free cash flow growth (1Y) 108.8% 120.8% 1.1%
Free cash flow CAGR (3Y) 22.3% 59.6% 22.4%

Profitability

14 metrics
MetricNOCOSISTDG
Gross margin 20.0% 32.9% 59.6%
EBITDA margin 14.1% 14.7% 50.7%
Operating margin 10.6% 12.2% 46.0%
Pretax margin 12.0% 10.9% 27.4%
Net margin 10.4% 8.8% 19.1%
FCF margin 8.8% 13.6% 19.3%
Operating cash flow margin 12.1% 16.4% 22.0%
Return on equity 24.7% 19.6% –
Return on assets 8.8% 6.4% 8.2%
Return on invested capital 12.2% 9.8% 15.5%
Return on capital employed 12.2% 11.3% 19.6%
Asset turnover 0.8x 0.7x 0.4x
Cash conversion (OCF / net income) 1.2x 1.9x 1.0x
Stock comp / revenue 0.3% 1.5% 1.5%

Financial Health

11 metrics
MetricNOCOSISTDG
Debt / assets 27.5% 40.2% 125.2%
Debt / equity 0.8x 1.3x -3.4x
Net debt / EBITDA 1.7x 2.6x 6.1x
Debt / FCF 3.8x 4.1x 17.4x
Liabilities / assets 64.4% 68.6% 136.7%
Equity / assets 35.6% 31.4% -36.7%
Interest coverage 7.1x 9.9x 2.5x
Current ratio 1.2x 2.9x 3.0x
Quick ratio 1.0x 1.9x 1.9x
Cash ratio 0.3x 0.6x 1.1x
Altman Z-score 3.02 3.09 1.80

Shareholder Returns

7 metrics
MetricNOCOSISTDG
Dividend yield 1.8% – –
Net buyback yield 0.7% 5.6% 2.5%
Shareholder yield 2.5% 5.6% 2.5%
Payout ratio (earnings) 30.2% – –
Payout ratio (FCF) 35.6% – –
Dividend growth (1Y) 8.0% – –
Dividend CAGR (3Y) 7.4% – –

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.

ConsensusNOCOSISTDG
Forward P/E 17.1xFY2026 17.5xFY2027 27.7xFY2026
EPS, next fiscal year $30.81FY2026 $11.62FY2027 $44.01FY2026
EPS growth, next FY +17.0%FY2026 +12.3%FY2027 +17.9%FY2026
EPS growth, the year after +3.7% +7.2% +7.9%
Revenue, next fiscal year $42.95BFY2026 $1.85BFY2027 $10.01BFY2026
Revenue growth, next FY +2.4%FY2026 +3.5%FY2027 +13.4%FY2026
Revenue growth, the year after +3.7% +16.1% +24.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersNOCOSISTDG
Held by institutions 83.4% 100.0% 93.2%
Institutions holding 1,813 368 1,142
Change in shares held, QoQ +0.3% +0.7% +1.2%
Institutions buying 841 192 585
Institutions selling 642 134 368
Buyers to sellers 1.31 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.

NOCOSISTDG
NOC 1.00 0.20 0.24
OSIS 0.20 1.00 0.17
TDG 0.24 0.17 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, NOC, OSIS and TDG?

Northrop Grumman (NOC) is the largest by market capitalisation: Northrop Grumman (NOC) $75.85B, Osi Systems (OSIS) $3.11B, TransDigm (TDG) $68.70B.

Which stock is cheaper, NOC, OSIS and TDG?

Northrop Grumman (NOC) trades on the lowest price-to-earnings ratio (Northrop Grumman (NOC) 16.8x, Osi Systems (OSIS) 19.6x, TransDigm (TDG) 35.9x). On next year's consensus earnings, Northrop Grumman (NOC) is cheapest (Northrop Grumman (NOC) 17.1x, Osi Systems (OSIS) 17.5x, TransDigm (TDG) 27.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

TransDigm (TDG) grew revenue fastest over the trailing twelve months: Northrop Grumman (NOC) +6.5%, Osi Systems (OSIS) +2.9%, TransDigm (TDG) +16.6%.

Which company is more profitable?

TransDigm (TDG) has the highest net margin (Northrop Grumman (NOC) 10.4%, Osi Systems (OSIS) 8.8%, TransDigm (TDG) 19.1%). On return on invested capital, TransDigm (TDG) leads (Northrop Grumman (NOC) 12.2%, Osi Systems (OSIS) 9.8%, TransDigm (TDG) 15.5%).

Which stock has performed better?

Over the past year TransDigm (TDG) returned the most: Northrop Grumman (NOC) -8.9%, Osi Systems (OSIS) -26.9%, TransDigm (TDG) -5.8%. Over five years, Osi Systems (OSIS) compounded fastest (Northrop Grumman (NOC) +7.6%/yr, Osi Systems (OSIS) +16.2%/yr, TransDigm (TDG) +12.9%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Northrop Grumman (NOC) 0.02%, Osi Systems (OSIS) 0.00%, TransDigm (TDG) 0.00%. Osi Systems (OSIS) and TransDigm (TDG) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, TransDigm (TDG) has been the steadiest (Northrop Grumman (NOC) 29.0%, Osi Systems (OSIS) 41.7%, TransDigm (TDG) 28.0%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, NOC, 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, 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.