GMTL vs PPTA vs EAF Stock Comparison

Guardian Metal Resources, Perpetua Resources and Graftech International Prices as of Oct 28, 2026 Peers: Industry group
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EAF Graftech International Ltd
$12.19 +22.5% 1M -9.6% 1Y
Market cap
$320.82M
P/E
–
Revenue (TTM)
$509.08M
Div. yield
–
Industrial Minerals Basic Materials
1 win

Head to Head

5 decided of 12

Perpetua Resources leads on 4 of the 12 questions below (Perpetua Resources 4, Graftech International 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionGMTLPPTAEAFLeader
Larger companyMarket capitalisation $309.77M $2.26B $320.82M PPTA
Cheaper on earningsLower P/E, profitable companies only -27.5x -9.7x -1.6x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — — –
Faster revenue growthRevenue growth, trailing twelve months — — -2.5% –
More profitableNet margin, trailing twelve months — — -38.4% –
Better return on capitalReturn on invested capital — — -12.9% –
Less leveragedLower net debt / EBITDA — — -23.1x –
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months — -26.9% -9.6% EAF
Better 5-year returnAnnualised price return, 5 years — +31.3%/yr -35.3%/yr PPTA
Less volatileAnnualised volatility, 1 year 91.1% 73.5% 112.5% PPTA
Higher overall scoreMean of the five percentile scores vs peers — 29/100 23/100 PPTA

Percentile Scorecard

GMTLPPTAEAF

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

AxisGMTLPPTAEAF
Valuation 31 #112 of 162 16 #136 of 162 22 #126 of 162
Growth – 1 #146 of 147 7 #137 of 147
Profitability – 23 #94 of 122 24 #93 of 122
Financial Health 95 #9 of 164 92 #14 of 164 20 #131 of 164
Shareholder Returns – 15 #91 of 107 43 #62 of 107
Overall – 29 23
  • GMTL ranked among 176 companies in Metals and Mining
  • PPTA ranked among 176 companies in Metals and Mining
  • EAF ranked among 176 companies in Metals and Mining

Price Performance

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

Returns

PeriodGMTLPPTAEAFSPY
1 month -48.0%-15.0%+22.5% +0.9%
3 months -47.8%+7.5%+72.7% +5.9%
6 months -72.1%-29.3%+40.4% +8.5%
Year to date —-23.4%-21.4% +13.3%
1 year —-26.9%-9.6% +12.4%
3 years —+416.7%-63.5% +88.1%
3 years, per year —+72.9%-28.6% +23.5%
5 years —+289.7%-88.6% +68.2%
5 years, per year —+31.3%-35.3% +11.0%

Risk

MeasureGMTLPPTAEAFSPY
Volatility, 1Y 91.1%73.5%112.5% 12.7%
Downside volatility, 1Y 91.8%75.1%129.3% 12.7%
Beta vs S&P 500, 1Y 2.263.022.00 1.00
Return / volatility, 1Y —-0.37-0.09 0.98
Max drawdown, 5Y -76.8%-70.6%-96.1% -25.4%
From 52-week high -76.8%-50.2%-32.3% -0.9%
52-week high $20.64$37.22$18.01 $779.14
52-week low $4.78$16.44$5.23 $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.

MultipleGMTLPPTAEAF
P/E now vs peer median -27.5xmedian 13.4x -10.0xmedian 13.4x -1.7xmedian 13.4x
P/S now vs peer median —median 3.2x —median 3.2x 0.6xmedian 3.2x
EV/EBITDA now vs peer median —median 7.3x -6.6xmedian 7.3x -30.3xmedian 7.3x
P/FCF now vs peer median -45.9xmedian 14.8x -10.9xmedian 14.8x -2.1xmedian 14.8x
P/B now vs peer median 3.0xmedian 2.3x 3.2xmedian 2.3x -0.8xmedian 2.3x
PEG now vs peer median —median 0.31 0.17median 0.31 0.02median 0.31

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 monthsGMTLPPTAEAF
Revenue – – $509.08M
Gross profit – – -$34.13M
Operating income – -$264.40M -$107.10M
Net income – -$232.33M -$195.63M
Free cash flow – -$213.26M -$158.11M
R&D – $254.25M $6.05M
EPS (diluted) – $-1.86 $-7.38
Cash & equivalents $52.46M $574.25M $134.31M
Total debt – – $1.20B
Shares (diluted) 57.79M 125.09M 26.51M
Enterprise value $309.77M -$139.71M -$217.52M

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
MetricGMTLPPTAEAF
P/E -27.5x -10.0x -1.7x
P/FCF -45.9x -10.9x -2.1x
P/Operating cash flow – -12.9x -2.9x
P/S – – 0.6x
P/B 3.0x 3.2x -0.8x
P/Tangible book 5.3x 3.2x -0.8x
EV/EBITDA – -6.6x -30.3x
EV/EBIT – -6.6x -13.0x
EV/Revenue – – 2.7x
EV/FCF – -8.2x -8.8x
EV/Operating cash flow – -9.7x -12.3x
PEG (3Y EPS CAGR) – 0.17 0.02

Growth

14 metrics
MetricGMTLPPTAEAF
Revenue growth (1Y) – – -2.5%
Revenue CAGR (3Y) – – -11.4%
Gross profit growth (1Y) – – -1,814%
Gross profit CAGR (3Y) – – -30.9%
Operating income growth (1Y) – -351.9% -70.6%
Operating income CAGR (3Y) – -93.2% -57.0%
Net income growth (1Y) – -951.5% 4.2%
Net income CAGR (3Y) – -101.3% -72.9%
EPS growth (1Y) – -542.8% 6.3%
EPS CAGR (3Y) – -60.3% -71.1%
Operating cash flow growth (1Y) – -436.4% -29.5%
Operating cash flow CAGR (3Y) – -103.1% -43.6%
Free cash flow growth (1Y) – -493.7% -31.3%
Free cash flow CAGR (3Y) – -113.4% -79.2%

Profitability

14 metrics
MetricGMTLPPTAEAF
Gross margin – – -6.7%
EBITDA margin – – -9.0%
Operating margin – – -21.0%
Pretax margin – – -36.8%
Net margin – – -38.4%
FCF margin – – -31.1%
Operating cash flow margin – – -22.2%
Return on equity – -31.1% –
Return on assets – -29.4% -18.9%
Return on invested capital – – -12.9%
Return on capital employed – -34.5% -12.1%
Asset turnover – – 0.5x
Cash conversion (OCF / net income) – 0.8x 0.6x
Stock comp / revenue – – 1.1%

Financial Health

11 metrics
MetricGMTLPPTAEAF
Debt / assets – – 117.4%
Debt / equity – – -3.1x
Net debt / EBITDA – – -23.1x
Debt / FCF – – -7.6x
Liabilities / assets 3.7% 6.9% 138.0%
Equity / assets 96.3% 93.1% -38.0%
Interest coverage – – -1.1x
Current ratio 15.3x 12.3x 3.5x
Quick ratio 14.8x 11.9x 1.4x
Cash ratio 14.4x 11.8x 0.9x
Altman Z-score – – -0.84

Shareholder Returns

7 metrics
MetricGMTLPPTAEAF
Dividend yield – – –
Net buyback yield – -18.6% -1.4%
Shareholder yield – -18.6% -1.4%
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.

ConsensusGMTLPPTAEAF
EPS, next fiscal year $-0.25FY2027 $-1.20FY2026 $-5.68FY2026
Revenue, next fiscal year $0.00FY2027 $0.00FY2026 $483.99MFY2026
Revenue growth, next FY – – -4.0%FY2026
Revenue growth, the year after – – +23.5%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersGMTLPPTAEAF
Held by institutions 10.6% 67.2% 41.3%
Institutions holding 47 255 90
Change in shares held, QoQ +16.7% -1.6% +2.5%
Institutions buying 36 128 54
Institutions selling 10 79 22
Buyers to sellers 3.60 1.62 2.45

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.

GMTLPPTAEAF
GMTL 1.00 0.49 0.18
PPTA 0.49 1.00 0.20
EAF 0.18 0.20 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, GMTL, PPTA and EAF?

Perpetua Resources (PPTA) is the largest by market capitalisation: Guardian Metal Resources (GMTL) $309.77M, Perpetua Resources (PPTA) $2.26B, Graftech International (EAF) $320.82M.

Which stock has performed better?

Over the past year Graftech International (EAF) returned the most: Perpetua Resources (PPTA) -26.9%, Graftech International (EAF) -9.6%. Over five years, Perpetua Resources (PPTA) compounded fastest (Perpetua Resources (PPTA) +31.3%/yr, Graftech International (EAF) -35.3%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Perpetua Resources (PPTA) has been the steadiest (Guardian Metal Resources (GMTL) 91.1%, Perpetua Resources (PPTA) 73.5%, Graftech International (EAF) 112.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, GMTL, PPTA and EAF?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Perpetua Resources (PPTA) 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.