TDG vs OSIS vs ACHR Stock Comparison

TransDigm, Osi Systems and Archer Aviation Prices as of Oct 29, 2026 Peers: Industry group
TDG TransDigm Group INC
$1,176.47 +7.0% 1M -10.6% 1Y
Market cap
$65.87B
P/E
34.5x
Revenue (TTM)
$10.01B
Div. yield
–
Commercial Aerospace Industrials
5 wins
OSIS Osi Systems Inc
$208.17 +8.3% 1M -16.5% 1Y
Market cap
$3.17B
P/E
20.0x
Revenue (TTM)
$1.80B
Div. yield
–
Defense Industrials
4 wins
ACHR Archer Aviation Inc.
$4.38 -13.6% 1M -60.8% 1Y
Market cap
$3.28B
P/E
–
Revenue (TTM)
$40.50M
Div. yield
–
Commercial Aerospace Industrials
2 wins

Head to Head

11 decided of 12

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

QuestionTDGOSISACHRLeader
Larger companyMarket capitalisation $65.87B $3.17B $3.28B TDG
Cheaper on earningsLower P/E, profitable companies only 34.5x 20.0x -4.1x OSIS
Cheaper on forward earningsLower price / next fiscal year consensus EPS 26.7x 17.9x — OSIS
Faster revenue growthRevenue growth, trailing twelve months +16.6% +2.9% +252.2% ACHR
More profitableNet margin, trailing twelve months 19.1% 8.8% -1,974.6% TDG
Better return on capitalReturn on invested capital 15.5% 9.8% -45.6% TDG
Less leveragedLower net debt / EBITDA 6.1x 2.6x 1.6x ACHR
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -10.6% -16.5% -60.8% TDG
Better 5-year returnAnnualised price return, 5 years +13.5%/yr +17.5%/yr -5.1%/yr OSIS
Less volatileAnnualised volatility, 1 year 27.3% 43.7% 69.4% TDG
Higher overall scoreMean of the five percentile scores vs peers 65/100 75/100 28/100 OSIS

Percentile Scorecard

TDGOSISACHR

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

AxisTDGOSISACHR
Valuation 53 #48 of 100 85 #16 of 100 7 #93 of 100
Growth 65 #34 of 96 66 #33 of 96 25 #72 of 96
Profitability 95 #6 of 95 80 #20 of 95 2 #93 of 95
Financial Health 17 #87 of 105 42 #61 of 105 91 #10 of 105
Shareholder Returns 95 #4 of 65 100 #1 of 65 16 #55 of 65
Overall 65 75 28
  • TDG ranked among 107 companies in Aerospace and Defense
  • OSIS ranked among 107 companies in Aerospace and Defense
  • ACHR 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

PeriodTDGOSISACHRSPY
1 month +7.0%+8.3%-13.6% +0.7%
3 months -5.9%-5.3%-7.6% +3.7%
6 months +1.4%-27.4%-23.7% +7.1%
Year to date -11.5%-18.4%-41.8% +12.8%
1 year -10.6%-16.5%-60.8% +11.9%
3 years +43.5%+98.3%-6.6% +85.2%
3 years, per year +12.8%+25.6%-2.3% +22.8%
5 years +88.6%+123.6%-23.2% +67.6%
5 years, per year +13.5%+17.5%-5.1% +10.9%
10 years +333.1%+188.1%— +262.0%
10 years, per year +15.8%+11.2%— +13.7%

Risk

MeasureTDGOSISACHRSPY
Volatility, 1Y 27.3%43.7%69.4% 12.7%
Downside volatility, 1Y 29.1%44.5%69.5% 12.6%
Beta vs S&P 500, 1Y 0.741.162.95 1.00
Return / volatility, 1Y -0.39-0.38-0.88 0.94
Max drawdown, 5Y -33.6%-37.9%-77.7% -25.4%
From 52-week high -18.9%-32.8%-61.0% -1.2%
52-week high $1,450.00$309.68$11.22 $779.14
52-week low $1,076.01$192.30$3.81 $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.

MultipleTDGOSISACHR
P/E now vs peer median 35.3xmedian 26.9x 20.9xmedian 26.9x -4.3xmedian 26.9x
P/S now vs peer median 6.5xmedian 3.0x 1.8xmedian 3.0x 83.3xmedian 3.0x
EV/EBITDA now vs peer median 18.9xmedian 15.0x 15.0xmedian 15.0x -2.1xmedian 15.0x
P/FCF now vs peer median 33.7xmedian 27.2x 13.4xmedian 27.2x -5.1xmedian 27.2x
P/B now vs peer median -6.6xmedian 2.5x 4.2xmedian 2.5x 1.8xmedian 2.5x
PEG now vs peer median 1.67median 0.93 0.97median 0.93 -0.23median 0.93

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 monthsTDGOSISACHR
Revenue $10.01B $1.80B $40.50M
Gross profit $5.96B $593.71M $1.00M
Operating income $4.61B $219.47M -$943.00M
Net income $2.13B $158.73M -$799.70M
Free cash flow $1.93B $245.20M -$660.00M
R&D – $78.14M $625.50M
EPS (diluted) $33.29 $9.77 $-1.02
Cash & equivalents $2.77B $236.30M $852.70M
Total debt $33.49B $999.57M $80.10M
Shares (diluted) 57.40M 16.25M 781.70M
Enterprise value $53.88B $1.82B -$3.66B

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
MetricTDGOSISACHR
P/E 35.3x 20.9x -4.3x
P/FCF 33.7x 13.4x -5.1x
P/Operating cash flow 29.6x 11.1x -6.2x
P/S 6.5x 1.8x 83.3x
P/B -6.6x 4.2x 1.8x
P/Tangible book -4.5x 5.6x 1.9x
EV/EBITDA 18.9x 15.0x -2.1x
EV/EBIT 20.8x 18.1x -2.0x
EV/Revenue 9.6x 2.2x 46.7x
EV/FCF 49.7x 16.2x -2.9x
EV/Operating cash flow 43.6x 13.4x -3.5x
PEG (3Y EPS CAGR) 1.67 0.97 -0.23

Growth

14 metrics
MetricTDGOSISACHR
Revenue growth (1Y) 16.6% 2.9% 252.2%
Revenue CAGR (3Y) 17.0% 11.9% 72.4%
Gross profit growth (1Y) 16.9% 0.8% –
Gross profit CAGR (3Y) 17.9% 10.4% –
Operating income growth (1Y) 16.7% -0.4% -66.5%
Operating income CAGR (3Y) 19.4% 16.3% -23.9%
Net income growth (1Y) 10.2% 4.2% -30.5%
Net income CAGR (3Y) 22.8% 19.3% -18.3%
EPS growth (1Y) 10.5% 12.1% 3.3%
EPS CAGR (3Y) 21.1% 21.5% 19.0%
Operating cash flow growth (1Y) 4.5% 94.8% -35.2%
Operating cash flow CAGR (3Y) 22.8% 46.2% -31.3%
Free cash flow growth (1Y) 1.1% 120.8% -39.7%
Free cash flow CAGR (3Y) 22.4% 59.6% -35.9%

Profitability

14 metrics
MetricTDGOSISACHR
Gross margin 59.6% 32.9% 2.5%
EBITDA margin 50.7% 14.7% -2,257%
Operating margin 46.0% 12.2% -2,328%
Pretax margin 27.4% 10.9% -1,974%
Net margin 19.1% 8.8% -1,975%
FCF margin 19.3% 13.6% -1,630%
Operating cash flow margin 22.0% 16.4% -1,334%
Return on equity – 19.6% -40.3%
Return on assets 8.2% 6.4% -35.3%
Return on invested capital 15.5% 9.8% -45.6%
Return on capital employed 19.6% 11.3% -44.8%
Asset turnover 0.4x 0.7x 0.0x
Cash conversion (OCF / net income) 1.0x 1.9x 0.7x
Stock comp / revenue 1.5% 1.5% 735.1%

Financial Health

11 metrics
MetricTDGOSISACHR
Debt / assets 125.2% 40.2% 3.6%
Debt / equity -3.4x 1.3x 0.0x
Net debt / EBITDA 6.1x 2.6x 1.6x
Debt / FCF 17.4x 4.1x -0.1x
Liabilities / assets 136.7% 68.6% 14.5%
Equity / assets -36.7% 31.4% 85.5%
Interest coverage 2.5x 9.9x –
Current ratio 3.0x 2.9x 10.2x
Quick ratio 1.9x 1.9x 9.7x
Cash ratio 1.1x 0.6x 9.7x
Altman Z-score 1.77 3.12 3.94

Shareholder Returns

7 metrics
MetricTDGOSISACHR
Dividend yield – – –
Net buyback yield 2.6% 5.5% -20.9%
Shareholder yield 2.6% 5.5% -20.9%
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.

ConsensusTDGOSISACHR
Forward P/E 26.7xFY2026 17.9xFY2027 –
EPS, next fiscal year $44.01FY2026 $11.62FY2027 $-1.40FY2026
EPS growth, next FY +17.9%FY2026 +12.3%FY2027 –
EPS growth, the year after +7.9% +7.2% –
Revenue, next fiscal year $10.01BFY2026 $1.85BFY2027 $14.23MFY2026
Revenue growth, next FY +13.4%FY2026 +3.5%FY2027 +4,642.2%FY2026
Revenue growth, the year after +24.4% +16.1% +503.3%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersTDGOSISACHR
Held by institutions 93.2% 100.0% 49.4%
Institutions holding 1,141 367 524
Change in shares held, QoQ +1.2% +0.7% +5.5%
Institutions buying 585 192 255
Institutions selling 367 134 150
Buyers to sellers 1.59 1.43 1.70

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.

TDGOSISACHR
TDG 1.00 0.16 0.18
OSIS 0.16 1.00 0.30
ACHR 0.18 0.30 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, TDG, OSIS and ACHR?

TransDigm (TDG) is the largest by market capitalisation: TransDigm (TDG) $65.87B, Osi Systems (OSIS) $3.17B, Archer Aviation (ACHR) $3.28B.

Which stock is cheaper, TDG, OSIS and ACHR?

Osi Systems (OSIS) trades on the lowest price-to-earnings ratio (TransDigm (TDG) 34.5x, Osi Systems (OSIS) 20.0x, Archer Aviation (ACHR) -4.1x). On next year's consensus earnings, Osi Systems (OSIS) is cheapest (TransDigm (TDG) 26.7x, Osi Systems (OSIS) 17.9x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Archer Aviation (ACHR) grew revenue fastest over the trailing twelve months: TransDigm (TDG) +16.6%, Osi Systems (OSIS) +2.9%, Archer Aviation (ACHR) +252.2%.

Which company is more profitable?

TransDigm (TDG) has the highest net margin (TransDigm (TDG) 19.1%, Osi Systems (OSIS) 8.8%, Archer Aviation (ACHR) -1,974.6%). On return on invested capital, TransDigm (TDG) leads (TransDigm (TDG) 15.5%, Osi Systems (OSIS) 9.8%, Archer Aviation (ACHR) -45.6%).

Which stock has performed better?

Over the past year TransDigm (TDG) returned the most: TransDigm (TDG) -10.6%, Osi Systems (OSIS) -16.5%, Archer Aviation (ACHR) -60.8%. Over five years, Osi Systems (OSIS) compounded fastest (TransDigm (TDG) +13.5%/yr, Osi Systems (OSIS) +17.5%/yr, Archer Aviation (ACHR) -5.1%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, TransDigm (TDG) has been the steadiest (TransDigm (TDG) 27.3%, Osi Systems (OSIS) 43.7%, Archer Aviation (ACHR) 69.4%). Volatility measures how widely the price swings, not the risk of the business.

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

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.