OSIS vs TDG vs NOC Stock Comparison

Osi Systems, TransDigm and Northrop Grumman Prices as of Oct 28, 2026 Peers: Industry group
OSIS Osi Systems Inc
$200.67 +4.0% 1M -20.0% 1Y
Market cap
$3.44B
P/E
22.3x
Revenue (TTM)
$1.79B
Div. yield
–
Defense Industrials
3 wins
TDG TransDigm Group INC
$1,137.98 +2.6% 1M -14.8% 1Y
Market cap
$67.40B
P/E
35.3x
Revenue (TTM)
$10.01B
Div. yield
–
Commercial Aerospace Industrials
4 wins

Head to Head

11 decided of 12

Northrop Grumman leads on 4 of the 12 questions below (Northrop Grumman 4, TransDigm 4, Osi Systems 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionOSISTDGNOCLeader
Larger companyMarket capitalisation $3.44B $67.40B $79.89B NOC
Cheaper on earningsLower P/E, profitable companies only 22.3x 35.3x 17.7x NOC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 17.3x 25.9x 17.9x OSIS
Faster revenue growthRevenue growth, trailing twelve months +4.3% +16.6% +6.5% TDG
More profitableNet margin, trailing twelve months 8.7% 19.1% 10.4% TDG
Better return on capitalReturn on invested capital 9.4% 15.5% 12.2% TDG
Less leveragedLower net debt / EBITDA 2.4x 6.1x 1.7x NOC
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.02% –
Better 1-year returnPrice return, last 12 months -20.0% -14.8% -7.1% NOC
Better 5-year returnAnnualised price return, 5 years +16.6%/yr +12.8%/yr +9.1%/yr OSIS
Less volatileAnnualised volatility, 1 year 43.5% 27.2% 28.7% TDG
Higher overall scoreMean of the five percentile scores vs peers 75/100 66/100 57/100 OSIS

Percentile Scorecard

OSISTDGNOC

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

AxisOSISTDGNOC
Valuation 84 #17 of 100 53 #48 of 100 74 #27 of 100
Growth 68 #32 of 97 69 #31 of 97 39 #60 of 97
Profitability 80 #20 of 96 96 #5 of 96 78 #22 of 96
Financial Health 43 #60 of 105 17 #87 of 105 39 #65 of 105
Shareholder Returns 98 #2 of 65 95 #4 of 65 58 #28 of 65
Overall 75 66 57
  • OSIS ranked among 107 companies in Aerospace and Defense
  • TDG ranked among 107 companies in Aerospace and Defense
  • NOC 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

PeriodOSISTDGNOCSPY
1 month +4.0%+2.6%+9.3% +0.9%
3 months -6.2%-10.0%+3.3% +5.9%
6 months -28.8%-0.4%-3.4% +8.5%
Year to date -21.3%-14.4%-3.1% +13.3%
1 year -20.0%-14.8%-7.1% +12.4%
3 years +88.6%+38.9%+16.8% +88.1%
3 years, per year +23.6%+11.6%+5.3% +23.5%
5 years +115.5%+82.4%+54.7% +68.2%
5 years, per year +16.6%+12.8%+9.1% +11.0%
10 years +177.7%+318.9%+142.0% +263.4%
10 years, per year +10.8%+15.4%+9.2% +13.8%

Risk

MeasureOSISTDGNOCSPY
Volatility, 1Y 43.5%27.2%28.7% 12.7%
Downside volatility, 1Y 44.4%29.0%28.5% 12.7%
Beta vs S&P 500, 1Y 1.180.75-0.01 1.00
Return / volatility, 1Y -0.46-0.54-0.25 0.98
Max drawdown, 5Y -37.9%-33.6%-38.4% -25.4%
From 52-week high -35.2%-21.5%-28.0% -0.9%
52-week high $309.68$1,450.00$768.02 $779.14
52-week low $192.30$1,076.01$473.40 $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.

MultipleOSISTDGNOC
P/E now vs peer median 21.5xmedian 26.4x 34.2xmedian 26.4x 17.4xmedian 26.4x
P/S now vs peer median 1.8xmedian 3.0x 6.3xmedian 3.0x 1.8xmedian 3.0x
EV/EBITDA now vs peer median 14.5xmedian 14.5x 18.5xmedian 14.5x 14.5xmedian 14.5x
P/FCF now vs peer median 14.0xmedian 26.1x 32.6xmedian 26.1x 20.5xmedian 26.1x
P/B now vs peer median 3.8xmedian 2.5x -6.4xmedian 2.5x 4.2xmedian 2.5x
PEG now vs peer median 1.14median 0.90 1.62median 0.90 17.06median 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 monthsOSISTDGNOC
Revenue $1.79B $10.01B $43.59B
Gross profit $593.09M $5.96B $8.73B
Operating income $218.97M $4.61B $4.63B
Net income $154.71M $2.13B $4.52B
Free cash flow $227.35M $1.93B $3.83B
R&D $79.14M – –
EPS (diluted) $8.95 $33.29 $31.74
Cash & equivalents $359.83M $2.77B $3.74B
Total debt $3.45B $33.49B $58.43B
Shares (diluted) 17.28M 57.40M 142.40M
Enterprise value $2.28B $55.40B $67.35B

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
MetricOSISTDGNOC
P/E 21.5x 34.2x 17.4x
P/FCF 14.0x 32.6x 20.5x
P/Operating cash flow 11.6x 28.6x 14.9x
P/S 1.8x 6.3x 1.8x
P/B 3.8x -6.4x 4.2x
P/Tangible book 5.0x -4.3x 4.2x
EV/EBITDA 14.5x 18.5x 14.5x
EV/EBIT 17.5x 20.3x 19.3x
EV/Revenue 2.1x 9.4x 2.0x
EV/FCF 16.9x 48.6x 23.3x
EV/Operating cash flow 13.9x 42.6x 16.9x
PEG (3Y EPS CAGR) 1.14 1.62 17.06

Growth

14 metrics
MetricOSISTDGNOC
Revenue growth (1Y) 4.3% 16.6% 6.5%
Revenue CAGR (3Y) 11.8% 17.0% 4.1%
Gross profit growth (1Y) 1.0% 16.9% 9.8%
Gross profit CAGR (3Y) 11.3% 17.9% 3.4%
Operating income growth (1Y) 0.7% 16.7% 6.8%
Operating income CAGR (3Y) 17.4% 19.4% 6.4%
Net income growth (1Y) 3.4% 10.2% 12.5%
Net income CAGR (3Y) 19.0% 22.8% -1.1%
EPS growth (1Y) 2.8% 10.5% 13.3%
EPS CAGR (3Y) 18.8% 21.1% 1.0%
Operating cash flow growth (1Y) 182.7% 4.5% 53.2%
Operating cash flow CAGR (3Y) 42.8% 22.8% 12.5%
Free cash flow growth (1Y) 305.3% 1.1% 108.8%
Free cash flow CAGR (3Y) 53.7% 22.4% 22.3%

Profitability

14 metrics
MetricOSISTDGNOC
Gross margin 33.2% 59.6% 20.0%
EBITDA margin 14.8% 50.7% 14.1%
Operating margin 12.3% 46.0% 10.6%
Pretax margin 10.8% 27.4% 12.0%
Net margin 8.7% 19.1% 10.4%
FCF margin 12.7% 19.3% 8.8%
Operating cash flow margin 15.4% 22.0% 12.1%
Return on equity 17.9% – 24.7%
Return on assets 6.1% 8.2% 8.8%
Return on invested capital 9.4% 15.5% 12.2%
Return on capital employed 10.9% 19.6% 12.2%
Asset turnover 0.7x 0.4x 0.8x
Cash conversion (OCF / net income) 1.8x 1.0x 1.2x
Stock comp / revenue 1.5% 1.5% 0.3%

Financial Health

11 metrics
MetricOSISTDGNOC
Debt / assets 40.0% 125.2% 27.5%
Debt / equity 1.2x -3.4x 0.8x
Net debt / EBITDA 2.4x 6.1x 1.7x
Debt / FCF 4.4x 17.4x 3.8x
Liabilities / assets 66.7% 136.7% 64.4%
Equity / assets 33.3% -36.7% 35.6%
Interest coverage 8.3x 2.5x 7.1x
Current ratio 3.2x 3.0x 1.2x
Quick ratio 2.2x 1.9x 1.0x
Cash ratio 0.7x 1.1x 0.3x
Altman Z-score 3.15 1.73 3.08

Shareholder Returns

7 metrics
MetricOSISTDGNOC
Dividend yield – – 1.7%
Net buyback yield 3.7% 2.7% 0.7%
Shareholder yield 3.7% 2.7% 2.4%
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.

ConsensusOSISTDGNOC
Forward P/E 17.3xFY2027 25.9xFY2026 17.9xFY2026
EPS, next fiscal year $11.62FY2027 $44.01FY2026 $30.81FY2026
EPS growth, next FY +12.3%FY2027 +17.9%FY2026 +17.0%FY2026
EPS growth, the year after +7.2% +7.9% +3.7%
Revenue, next fiscal year $1.85BFY2027 $10.01BFY2026 $42.95BFY2026
Revenue growth, next FY +3.5%FY2027 +13.4%FY2026 +2.4%FY2026
Revenue growth, the year after +16.1% +24.4% +3.7%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersOSISTDGNOC
Held by institutions 100.0% 93.2% 83.4%
Institutions holding 366 1,140 1,809
Change in shares held, QoQ +0.7% +1.2% +0.3%
Institutions buying 191 584 840
Institutions selling 134 367 639
Buyers to sellers 1.43 1.59 1.31

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.

OSISTDGNOC
OSIS 1.00 0.15 0.20
TDG 0.15 1.00 0.25
NOC 0.20 0.25 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, OSIS, TDG and NOC?

Northrop Grumman (NOC) is the largest by market capitalisation: Osi Systems (OSIS) $3.44B, TransDigm (TDG) $67.40B, Northrop Grumman (NOC) $79.89B.

Which stock is cheaper, OSIS, TDG and NOC?

Northrop Grumman (NOC) trades on the lowest price-to-earnings ratio (Osi Systems (OSIS) 22.3x, TransDigm (TDG) 35.3x, Northrop Grumman (NOC) 17.7x). On next year's consensus earnings, Osi Systems (OSIS) is cheapest (Osi Systems (OSIS) 17.3x, TransDigm (TDG) 25.9x, Northrop Grumman (NOC) 17.9x). 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: Osi Systems (OSIS) +4.3%, TransDigm (TDG) +16.6%, Northrop Grumman (NOC) +6.5%.

Which company is more profitable?

TransDigm (TDG) has the highest net margin (Osi Systems (OSIS) 8.7%, TransDigm (TDG) 19.1%, Northrop Grumman (NOC) 10.4%). On return on invested capital, TransDigm (TDG) leads (Osi Systems (OSIS) 9.4%, TransDigm (TDG) 15.5%, Northrop Grumman (NOC) 12.2%).

Which stock has performed better?

Over the past year Northrop Grumman (NOC) returned the most: Osi Systems (OSIS) -20.0%, TransDigm (TDG) -14.8%, Northrop Grumman (NOC) -7.1%. Over five years, Osi Systems (OSIS) compounded fastest (Osi Systems (OSIS) +16.6%/yr, TransDigm (TDG) +12.8%/yr, Northrop Grumman (NOC) +9.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Osi Systems (OSIS) 0.00%, TransDigm (TDG) 0.00%, Northrop Grumman (NOC) 0.02%. 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 (Osi Systems (OSIS) 43.5%, TransDigm (TDG) 27.2%, Northrop Grumman (NOC) 28.7%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, OSIS, TDG and NOC?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Northrop Grumman (NOC) leads on 4. 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.