ATI vs PRLB vs GLW Stock Comparison

Ati, Proto Labs and Corning Prices as of Oct 23, 2026 Peers: Industry group
ATI Ati Inc
$156.88 -14.7% 1M +75.2% 1Y
Market cap
$22.42B
P/E
47.1x
Revenue (TTM)
$4.72B
Div. yield
–
Specialty Chemicals Basic Materials
6 wins
PRLB Proto Labs Inc
$85.54 -4.2% 1M +54.8% 1Y
Market cap
$2.07B
P/E
67.8x
Revenue (TTM)
$560.54M
Div. yield
–
3D Printing Industrials
1 win
GLW Corning Inc /Ny
$123.63 -20.0% 1M +44.0% 1Y
Market cap
$109.74B
P/E
57.8x
Revenue (TTM)
$16.96B
Div. yield
0.01%
Specialty Chemicals Basic Materials
4 wins

Head to Head

11 decided of 12

Ati leads on 6 of the 12 questions below (Ati 6, Corning 4, Proto Labs 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionATIPRLBGLWLeader
Larger companyMarket capitalisation $22.42B $2.07B $109.74B GLW
Cheaper on earningsLower P/E, profitable companies only 47.1x 67.8x 57.8x ATI
Cheaper on forward earningsLower price / next fiscal year consensus EPS 32.9x 37.4x 35.8x ATI
Faster revenue growthRevenue growth, trailing twelve months +4.6% +10.2% +19.4% GLW
More profitableNet margin, trailing twelve months 10.1% 5.4% 11.2% GLW
Better return on capitalReturn on invested capital 14.9% — 10.4% ATI
Less leveragedLower net debt / EBITDA 1.6x — 1.5x GLW
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.01% –
Better 1-year returnPrice return, last 12 months +75.2% +54.8% +44.0% ATI
Better 5-year returnAnnualised price return, 5 years +58.0%/yr +3.7%/yr +26.5%/yr ATI
Less volatileAnnualised volatility, 1 year 41.7% 46.8% 74.5% ATI
Higher overall scoreMean of the five percentile scores vs peers 58/100 59/100 57/100 PRLB

Percentile Scorecard

ATIPRLBGLW

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

AxisATIPRLBGLW
Valuation 14 #81 of 94 34 #135 of 203 19 #76 of 94
Growth 88 #12 of 92 83 #32 of 188 99 #2 of 92
Profitability 91 #9 of 89 52 #91 of 187 81 #18 of 89
Financial Health 49 #50 of 97 96 #11 of 222 59 #40 of 97
Shareholder Returns 48 #37 of 70 32 #104 of 153 29 #50 of 70
Overall 58 59 57
  • ATI ranked among 99 companies in Chemicals
  • PRLB ranked among 222 companies in Machinery
  • GLW ranked among 99 companies in Chemicals

Price Performance

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

Returns

PeriodATIPRLBGLWSPY
1 month -14.7%-4.2%-20.0% -1.0%
3 months -20.7%+9.2%-15.7% +2.9%
6 months +1.7%+32.4%-29.7% +6.4%
Year to date +36.7%+69.1%+41.2% +11.4%
1 year +75.2%+54.8%+44.0% +13.1%
3 years +329.0%+251.1%+360.3% +79.4%
3 years, per year +62.5%+52.0%+66.4% +21.5%
5 years +882.3%+19.7%+223.4% +67.7%
5 years, per year +58.0%+3.7%+26.5% +10.9%
10 years +782.8%+59.8%+419.0% +255.2%
10 years, per year +24.3%+4.8%+17.9% +13.5%

Risk

MeasureATIPRLBGLWSPY
Volatility, 1Y 41.7%46.8%74.5% 12.7%
Downside volatility, 1Y 40.3%38.7%75.7% 12.7%
Beta vs S&P 500, 1Y 1.632.033.01 1.00
Return / volatility, 1Y 1.801.170.59 1.03
Max drawdown, 5Y -38.0%-71.4%-51.6% -25.4%
From 52-week high -32.3%-13.3%-51.6% -2.5%
52-week high $231.79$98.64$255.69 $779.14
52-week low $89.25$46.81$78.03 $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.

MultipleATIPRLBGLW
P/E now vs peer median 44.9xmedian 21.5x 67.3xmedian 25.9x 56.1xmedian 21.5x
P/S now vs peer median 4.5xmedian 1.4x 3.7xmedian 1.9x 6.3xmedian 1.4x
EV/EBITDA now vs peer median 25.5xmedian 12.4x 27.4xmedian 13.7x 27.9xmedian 12.4x
P/FCF now vs peer median 40.6xmedian 15.5x 36.1xmedian 21.1x 44.5xmedian 15.5x
P/B now vs peer median 10.7xmedian 1.6x 3.0xmedian 2.3x 8.1xmedian 1.6x
PEG now vs peer median 5.07median 1.70 2.10median 1.19 1.28median 1.70

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 monthsATIPRLBGLW
Revenue $4.72B $560.54M $16.96B
Gross profit $1.10B $254.60M $6.17B
Operating income $716.80M $36.81M $2.60B
Net income $488.90M $30.48M $2.07B
Free cash flow $526.30M $56.66M $2.40B
R&D – $42.36M $1.14B
EPS (diluted) $3.44 $1.25 $2.17
Cash & equivalents $783.00M $127.92M $2.50B
Total debt $2.19B – $33.16B
Shares (diluted) 138.30M 24.42M 875.00M
Enterprise value $20.44B $1.54B $102.31B

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
MetricATIPRLBGLW
P/E 44.9x 67.3x 56.1x
P/FCF 40.6x 36.1x 44.5x
P/Operating cash flow 26.5x 26.1x 27.2x
P/S 4.5x 3.7x 6.3x
P/B 10.7x 3.0x 8.1x
P/Tangible book 10.7x 3.0x 8.5x
EV/EBITDA 25.5x 27.4x 27.9x
EV/EBIT 31.8x 51.7x 43.3x
EV/Revenue 4.8x 3.4x 6.6x
EV/FCF 43.3x 33.6x 47.0x
EV/Operating cash flow 28.3x 24.2x 28.7x
PEG (3Y EPS CAGR) 5.07 2.10 1.28

Growth

14 metrics
MetricATIPRLBGLW
Revenue growth (1Y) 4.6% 10.2% 19.4%
Revenue CAGR (3Y) 4.5% 4.9% 8.4%
Gross profit growth (1Y) 15.7% 13.3% 24.9%
Gross profit CAGR (3Y) 12.6% 6.8% 15.6%
Operating income growth (1Y) 8.8% 121.9% 51.7%
Operating income CAGR (3Y) 16.4% 33.2% 39.6%
Net income growth (1Y) 12.9% 105.8% 128.4%
Net income CAGR (3Y) 5.8% 31.6% 44.1%
EPS growth (1Y) 17.9% 103.1% 129.3%
EPS CAGR (3Y) 8.9% 32.0% 43.7%
Operating cash flow growth (1Y) 69.9% 10.6% 79.5%
Operating cash flow CAGR (3Y) – 7.7% 27.4%
Free cash flow growth (1Y) 123.6% -14.0% 100.6%
Free cash flow CAGR (3Y) – 11.9% 111.0%

Profitability

14 metrics
MetricATIPRLBGLW
Gross margin 23.4% 45.4% 36.4%
EBITDA margin 18.9% 12.4% 23.8%
Operating margin 15.2% 6.6% 15.3%
Pretax margin 12.7% 7.6% 14.2%
Net margin 10.1% 5.4% 11.2%
FCF margin 11.2% 10.1% 14.1%
Operating cash flow margin 17.1% 14.0% 23.1%
Return on equity 25.2% 4.4% 16.3%
Return on assets 8.9% 3.9% 6.5%
Return on invested capital 14.9% – 10.4%
Return on capital employed 17.6% 5.2% 10.0%
Asset turnover 0.9x 0.7x 0.5x
Cash conversion (OCF / net income) 1.6x 2.6x 1.9x
Stock comp / revenue 0.6% 2.6% 2.5%

Financial Health

11 metrics
MetricATIPRLBGLW
Debt / assets 38.2% – 25.7%
Debt / equity 1.1x – 0.6x
Net debt / EBITDA 1.6x – 1.5x
Debt / FCF 4.2x – 3.5x
Liabilities / assets 65.2% 12.6% 60.2%
Equity / assets 34.8% 87.4% 39.8%
Interest coverage – – 7.3x
Current ratio 2.3x 3.6x 1.8x
Quick ratio 1.1x 3.2x 0.9x
Cash ratio 0.6x 2.0x 0.4x
Altman Z-score 5.23 13.94 4.89

Shareholder Returns

7 metrics
MetricATIPRLBGLW
Dividend yield – – 0.9%
Net buyback yield 1.3% 0.6% -0.5%
Shareholder yield 1.3% 0.6% 0.4%
Payout ratio (earnings) – – 47.8%
Payout ratio (FCF) – – 41.4%
Dividend growth (1Y) – – -0.3%
Dividend CAGR (3Y) – – 0.9%

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.

ConsensusATIPRLBGLW
Forward P/E 32.9xFY2026 37.4xFY2026 35.8xFY2026
EPS, next fiscal year $4.77FY2026 $2.29FY2026 $3.45FY2026
EPS growth, next FY +47.2%FY2026 +38.0%FY2026 +36.9%FY2026
EPS growth, the year after +23.5% +9.6% +23.2%
Revenue, next fiscal year $5.24BFY2026 $612.12MFY2026 $18.31BFY2026
Revenue growth, next FY +14.2%FY2026 +14.8%FY2026 +11.6%FY2026
Revenue growth, the year after +13.1% +4.8% +30.7%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersATIPRLBGLW
Held by institutions 93.5% 93.7% 73.0%
Institutions holding 785 276 2,680
Change in shares held, QoQ +0.9% +1.7% +3.5%
Institutions buying 478 145 1,474
Institutions selling 217 89 949
Buyers to sellers 2.20 1.63 1.55

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.

ATIPRLBGLW
ATI 1.00 0.44 0.51
PRLB 0.44 1.00 0.43
GLW 0.51 0.43 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, ATI, PRLB and GLW?

Corning (GLW) is the largest by market capitalisation: Ati (ATI) $22.42B, Proto Labs (PRLB) $2.07B, Corning (GLW) $109.74B.

Which stock is cheaper, ATI, PRLB and GLW?

Ati (ATI) trades on the lowest price-to-earnings ratio (Ati (ATI) 47.1x, Proto Labs (PRLB) 67.8x, Corning (GLW) 57.8x). On next year's consensus earnings, Ati (ATI) is cheapest (Ati (ATI) 32.9x, Proto Labs (PRLB) 37.4x, Corning (GLW) 35.8x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Corning (GLW) grew revenue fastest over the trailing twelve months: Ati (ATI) +4.6%, Proto Labs (PRLB) +10.2%, Corning (GLW) +19.4%.

Which company is more profitable?

Corning (GLW) has the highest net margin (Ati (ATI) 10.1%, Proto Labs (PRLB) 5.4%, Corning (GLW) 11.2%). On return on invested capital, Ati (ATI) leads (Ati (ATI) 14.9%, Corning (GLW) 10.4%).

Which stock has performed better?

Over the past year Ati (ATI) returned the most: Ati (ATI) +75.2%, Proto Labs (PRLB) +54.8%, Corning (GLW) +44.0%. Over five years, Ati (ATI) compounded fastest (Ati (ATI) +58.0%/yr, Proto Labs (PRLB) +3.7%/yr, Corning (GLW) +26.5%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Ati (ATI) 0.00%, Proto Labs (PRLB) 0.00%, Corning (GLW) 0.01%. Ati (ATI) and Proto Labs (PRLB) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Ati (ATI) has been the steadiest (Ati (ATI) 41.7%, Proto Labs (PRLB) 46.8%, Corning (GLW) 74.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, ATI, PRLB and GLW?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Ati (ATI) leads on 6. 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.