MLSS vs PDEX vs DDD Stock Comparison

Milestone Scientific, Pro Dex and 3D Systems Prices as of Oct 26, 2026 Peers: Industry group
PDEX Pro Dex Inc
$60.66 -15.5% 1M +113.6% 1Y
Market cap
$200.52M
P/E
14.7x
Revenue (TTM)
$77.55M
Div. yield
–
Medical Devices Healthcare
7 wins
DDD 3D Systems Corp
$2.95 -17.4% 1M -5.8% 1Y
Market cap
$450.63M
P/E
–
Revenue (TTM)
$387.64M
Div. yield
–
3D Printing Industrials
2 wins

Head to Head

9 decided of 12

Pro Dex leads on 7 of the 12 questions below (Pro Dex 7, 3D Systems 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionMLSSPDEXDDDLeader
Larger companyMarket capitalisation $28.89M $200.52M $450.63M DDD
Cheaper on earningsLower P/E, profitable companies only — 14.7x -8.2x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 18.7x — –
Faster revenue growthRevenue growth, trailing twelve months -27.5% +16.4% -6.2% PDEX
More profitableNet margin, trailing twelve months — 17.6% -14.2% PDEX
Better return on capitalReturn on invested capital — 12.0% -17.8% PDEX
Less leveragedLower net debt / EBITDA — 1.8x 1.0x DDD
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -26.6% +113.6% -5.8% PDEX
Better 5-year returnAnnualised price return, 5 years -31.5%/yr +20.2%/yr -35.8%/yr PDEX
Less volatileAnnualised volatility, 1 year 81.5% 57.0% 84.2% PDEX
Higher overall scoreMean of the five percentile scores vs peers — 78/100 31/100 PDEX

Percentile Scorecard

MLSSPDEXDDD

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

AxisMLSSPDEXDDD
Valuation – 83 #39 of 228 16 #170 of 203
Growth – 87 #29 of 221 59 #78 of 187
Profitability – 89 #24 of 208 11 #164 of 185
Financial Health – 56 #107 of 239 65 #78 of 219
Shareholder Returns – 77 #32 of 137 5 #145 of 153
Overall – 78 31
  • MLSS ranked among 248 companies in Medical Devices and Diagnostics
  • PDEX ranked among 248 companies in Medical Devices and Diagnostics
  • DDD ranked among 222 companies in Machinery

Price Performance

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

Returns

PeriodMLSSPDEXDDDSPY
1 month -26.8%-15.5%-17.4% -0.8%
3 months -26.8%+5.9%+12.2% +3.5%
6 months -11.8%+16.7%+33.5% +7.0%
Year to date +9.9%+57.6%+66.7% +12.2%
1 year -26.6%+113.6%-5.8% +13.0%
3 years -66.3%+254.9%-17.1% +86.3%
3 years, per year -30.4%+52.6%-6.1% +23.1%
5 years -84.8%+150.2%-89.1% +68.6%
5 years, per year -31.5%+20.2%-35.8% +11.0%
10 years -83.8%+1,125.5%-79.3% +258.0%
10 years, per year -16.6%+28.5%-14.6% +13.6%

Risk

MeasureMLSSPDEXDDDSPY
Volatility, 1Y 81.5%57.0%84.2% 12.7%
Downside volatility, 1Y 83.3%51.1%75.4% 12.7%
Beta vs S&P 500, 1Y 1.281.222.82 1.00
Return / volatility, 1Y -0.331.99-0.07 1.02
Max drawdown, 5Y -90.9%-65.4%-96.0% -25.4%
From 52-week high -45.5%-17.4%-24.0% -1.8%
52-week high $0.55$73.41$3.88 $779.14
52-week low $0.25$28.71$1.77 $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.

MultipleMLSSPDEXDDD
P/E now vs peer median —median 30.6x 14.3xmedian 30.6x -8.0xmedian 26.0x
P/S now vs peer median 4.0xmedian 3.0x 2.5xmedian 3.0x 1.3xmedian 1.9x
EV/EBITDA now vs peer median —median 17.5x 15.2xmedian 17.5x -11.7xmedian 14.0x
P/FCF now vs peer median —median 23.3x 28.6xmedian 23.3x -9.4xmedian 21.4x
P/B now vs peer median —median 2.4x 4.1xmedian 2.4x 1.8xmedian 2.2x
PEG now vs peer median —median 0.87 0.50median 0.87 -0.30median 1.26

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 monthsMLSSPDEXDDD
Revenue $6.58M $77.55M $387.64M
Gross profit – $24.33M $131.01M
Operating income – $12.99M -$61.26M
Net income – $13.66M -$54.85M
Free cash flow – $6.76M -$52.40M
R&D – $3.35M $47.60M
EPS (diluted) – $4.12 $-0.37
Cash & equivalents – $8.19M $127.95M
Total debt – $119.52M $91.18M
Shares (diluted) 93.13M 3.32M 148.97M
Enterprise value $28.89M $167.31M $46.42M

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
MetricMLSSPDEXDDD
P/E – 14.3x -8.0x
P/FCF – 28.6x -9.4x
P/Operating cash flow – 26.7x -11.6x
P/S 4.0x 2.5x 1.3x
P/B – 4.1x 1.8x
P/Tangible book – 4.1x 1.9x
EV/EBITDA – 15.2x -11.7x
EV/EBIT – 16.8x -7.4x
EV/Revenue 4.0x 2.8x 1.2x
EV/FCF – 32.4x -8.7x
EV/Operating cash flow – 30.2x -10.7x
PEG (3Y EPS CAGR) – 0.50 -0.30

Growth

14 metrics
MetricMLSSPDEXDDD
Revenue growth (1Y) -27.5% 16.4% -6.2%
Revenue CAGR (3Y) -12.9% 18.9% -9.0%
Gross profit growth (1Y) – 24.7% -9.6%
Gross profit CAGR (3Y) – 24.0% -13.8%
Operating income growth (1Y) – 21.5% 76.7%
Operating income CAGR (3Y) – 31.1% 21.6%
Net income growth (1Y) – 52.2% 62.1%
Net income CAGR (3Y) – 24.5% 23.3%
EPS growth (1Y) – 54.2% 53.6%
EPS CAGR (3Y) – 28.4% 26.7%
Operating cash flow growth (1Y) – 530.6% 38.0%
Operating cash flow CAGR (3Y) – 9.9% 18.5%
Free cash flow growth (1Y) – 330.8% 36.8%
Free cash flow CAGR (3Y) – 14.6% 20.0%

Profitability

14 metrics
MetricMLSSPDEXDDD
Gross margin – 31.4% 33.8%
EBITDA margin – 18.6% -10.0%
Operating margin – 16.8% -15.8%
Pretax margin – 23.2% -11.7%
Net margin – 17.6% -14.2%
FCF margin – 8.7% -13.5%
Operating cash flow margin – 9.3% -10.9%
Return on equity – 29.4% -21.7%
Return on assets – 18.3% -10.5%
Return on invested capital – 12.0% -17.8%
Return on capital employed – 21.0% -14.7%
Asset turnover – 1.0x 0.7x
Cash conversion (OCF / net income) – 0.5x 0.8x
Stock comp / revenue – 0.9% 3.5%

Financial Health

11 metrics
MetricMLSSPDEXDDD
Debt / assets – 47.0% 17.0%
Debt / equity – 0.7x 0.3x
Net debt / EBITDA – 1.8x 1.0x
Debt / FCF – 5.2x -1.7x
Liabilities / assets – 36.1% 48.9%
Equity / assets – 63.9% 51.1%
Interest coverage – 16.0x –
Current ratio – 4.1x 3.4x
Quick ratio – 2.4x 1.9x
Cash ratio – 0.7x 1.2x
Altman Z-score – 7.47 -1.48

Shareholder Returns

7 metrics
MetricMLSSPDEXDDD
Dividend yield – – –
Net buyback yield – 0.6% -10.9%
Shareholder yield – 0.6% -10.9%
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.

ConsensusMLSSPDEXDDD
Forward P/E – 18.7xFY2027 –
EPS, next fiscal year $-0.04FY2026 $3.24FY2027 $-0.14FY2026
EPS growth, next FY – -21.4%FY2027 –
EPS growth, the year after – -3.1% –
Revenue, next fiscal year $9.29MFY2026 $87.24MFY2027 $368.77MFY2026
Revenue growth, next FY +3.6%FY2026 +12.5%FY2027 -4.7%FY2026
Revenue growth, the year after +27.1% -6.8% +7.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersMLSSPDEXDDD
Held by institutions 5.8% 22.8% 71.1%
Institutions holding 31 68 210
Change in shares held, QoQ +18.9% -1.8% +34.8%
Institutions buying 11 40 126
Institutions selling 4 20 37
Buyers to sellers 2.75 2.00 3.41

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.

MLSSPDEXDDD
MLSS 1.00 0.17 0.07
PDEX 0.17 1.00 0.23
DDD 0.07 0.23 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, MLSS, PDEX and DDD?

3D Systems (DDD) is the largest by market capitalisation: Milestone Scientific (MLSS) $28.89M, Pro Dex (PDEX) $200.52M, 3D Systems (DDD) $450.63M.

Which company is growing faster?

Pro Dex (PDEX) grew revenue fastest over the trailing twelve months: Milestone Scientific (MLSS) -27.5%, Pro Dex (PDEX) +16.4%, 3D Systems (DDD) -6.2%.

Which company is more profitable?

Pro Dex (PDEX) has the highest net margin (Pro Dex (PDEX) 17.6%, 3D Systems (DDD) -14.2%). On return on invested capital, Pro Dex (PDEX) leads (Pro Dex (PDEX) 12.0%, 3D Systems (DDD) -17.8%).

Which stock has performed better?

Over the past year Pro Dex (PDEX) returned the most: Milestone Scientific (MLSS) -26.6%, Pro Dex (PDEX) +113.6%, 3D Systems (DDD) -5.8%. Over five years, Pro Dex (PDEX) compounded fastest (Milestone Scientific (MLSS) -31.5%/yr, Pro Dex (PDEX) +20.2%/yr, 3D Systems (DDD) -35.8%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Pro Dex (PDEX) has been the steadiest (Milestone Scientific (MLSS) 81.5%, Pro Dex (PDEX) 57.0%, 3D Systems (DDD) 84.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, MLSS, PDEX and DDD?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Pro Dex (PDEX) leads on 7. 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.