GMTL vs RIO vs EAF Stock Comparison

Guardian Metal Resources, Rio Tinto and Graftech International Prices as of Oct 26, 2026 Peers: Industry group
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RIO Rio Tinto Plc
$83.71 -11.4% 1M +18.7% 1Y
Market cap
$139.20B
P/E
–
Revenue (TTM)
—
Div. yield
–
Iron Ore Basic Materials
4 wins

Head to Head

4 decided of 12

Rio Tinto leads on 4 of the 12 questions below (Rio Tinto 4). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionGMTLRIOEAFLeader
Larger companyMarket capitalisation $297.06M $139.20B $309.95M RIO
Cheaper on earningsLower P/E, profitable companies only -30.5x — -1.6x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 10.7x — –
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 — +18.7% -37.3% RIO
Better 5-year returnAnnualised price return, 5 years — +5.4%/yr -36.9%/yr RIO
Less volatileAnnualised volatility, 1 year 91.1% 30.7% 112.2% RIO
Higher overall scoreMean of the five percentile scores vs peers — — 22/100 –

Percentile Scorecard

GMTLRIOEAF

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

AxisGMTLRIOEAF
Valuation 29 #115 of 162 – 21 #129 of 162
Growth – – 7 #137 of 147
Profitability – – 25 #92 of 122
Financial Health 95 #9 of 165 22 #129 of 165 20 #132 of 165
Shareholder Returns – 98 #3 of 107 40 #65 of 107
Overall – – 22
  • GMTL ranked among 176 companies in Metals and Mining
  • RIO 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

PeriodGMTLRIOEAFSPY
1 month -48.0%-11.4%-3.5% -0.8%
3 months -53.2%-9.0%+37.1% +3.5%
6 months -74.3%-16.2%+12.3% +7.0%
Year to date —+4.6%-31.1% +12.2%
1 year —+18.7%-37.3% +13.0%
3 years —+31.3%-68.0% +86.3%
3 years, per year —+9.5%-31.6% +23.1%
5 years —+29.9%-90.0% +68.6%
5 years, per year —+5.4%-36.9% +11.0%
10 years —+144.7%— +258.0%
10 years, per year —+9.4%— +13.6%

Risk

MeasureGMTLRIOEAFSPY
Volatility, 1Y 91.1%30.7%112.2% 12.7%
Downside volatility, 1Y 91.7%32.1%128.7% 12.7%
Beta vs S&P 500, 1Y 2.291.271.96 1.00
Return / volatility, 1Y —0.61-0.33 1.02
Max drawdown, 5Y -76.4%-39.0%-96.1% -25.4%
From 52-week high -74.3%-25.3%-40.7% -1.8%
52-week high $20.64$112.04$18.01 $779.14
52-week low $4.88$67.89$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.

MultipleGMTLRIOEAF
P/E now vs peer median -30.5xmedian 12.8x —median 12.8x -1.4xmedian 12.8x
P/S now vs peer median —median 3.1x —median 3.1x 0.6xmedian 3.1x
EV/EBITDA now vs peer median —median 7.0x —median 7.0x -29.4xmedian 7.0x
P/FCF now vs peer median -50.9xmedian 15.2x —median 15.2x -1.8xmedian 15.2x
P/B now vs peer median 3.3xmedian 2.1x 2.0xmedian 2.1x -0.7xmedian 2.1x
PEG now vs peer median —median 0.29 —median 0.29 0.02median 0.29

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 monthsGMTLRIOEAF
Revenue – – $509.08M
Gross profit – – -$34.13M
Operating income – – -$107.10M
Net income – – -$195.63M
Free cash flow – – -$158.11M
R&D – – $6.05M
EPS (diluted) – – $-7.38
Cash & equivalents $52.46M $8.87B $134.31M
Total debt – $16.90B $1.20B
Shares (diluted) 57.79M 1.63B 26.51M
Enterprise value $297.06M $99.70B -$228.39M

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
MetricGMTLRIOEAF
P/E -30.5x – -1.4x
P/FCF -50.9x – -1.8x
P/Operating cash flow – – -2.5x
P/S – – 0.6x
P/B 3.3x 2.0x -0.7x
P/Tangible book 5.8x 2.2x -0.7x
EV/EBITDA – – -29.4x
EV/EBIT – – -12.6x
EV/Revenue – – 2.7x
EV/FCF – – -8.6x
EV/Operating cash flow – – -12.0x
PEG (3Y EPS CAGR) – – 0.02

Growth

14 metrics
MetricGMTLRIOEAF
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) – – -70.6%
Operating income CAGR (3Y) – – -57.0%
Net income growth (1Y) – – 4.2%
Net income CAGR (3Y) – – -72.9%
EPS growth (1Y) – – 6.3%
EPS CAGR (3Y) – – -71.1%
Operating cash flow growth (1Y) – – -29.5%
Operating cash flow CAGR (3Y) – – -43.6%
Free cash flow growth (1Y) – – -31.3%
Free cash flow CAGR (3Y) – – -79.2%

Profitability

14 metrics
MetricGMTLRIOEAF
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 – – –
Return on assets – – -18.9%
Return on invested capital – – -12.9%
Return on capital employed – – -12.1%
Asset turnover – – 0.5x
Cash conversion (OCF / net income) – – 0.6x
Stock comp / revenue – – 1.1%

Financial Health

11 metrics
MetricGMTLRIOEAF
Debt / assets – – 117.4%
Debt / equity – 0.3x -3.1x
Net debt / EBITDA – – -23.1x
Debt / FCF – – -7.6x
Liabilities / assets 3.7% – 138.0%
Equity / assets 96.3% – -38.0%
Interest coverage – – -1.1x
Current ratio 15.3x 1.4x 3.5x
Quick ratio 14.8x 1.0x 1.4x
Cash ratio 14.4x 0.6x 0.9x
Altman Z-score – – -0.85

Shareholder Returns

7 metrics
MetricGMTLRIOEAF
Dividend yield – 5.6% –
Net buyback yield – – -1.6%
Shareholder yield – 5.6% -1.6%
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.

ConsensusGMTLRIOEAF
Forward P/E – 10.7xFY2026 –
EPS, next fiscal year $-0.25FY2027 $7.84FY2026 $-5.68FY2026
EPS growth, next FY – +17.2%FY2026 –
EPS growth, the year after – +9.1% –
Revenue, next fiscal year $0.00FY2027 $67.58BFY2026 $483.99MFY2026
Revenue growth, next FY – +17.2%FY2026 -4.0%FY2026
Revenue growth, the year after – -8.0% +23.5%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersGMTLRIOEAF
Held by institutions 10.6% 7.9% 41.3%
Institutions holding 47 968 90
Change in shares held, QoQ +16.7% -1.1% +2.5%
Institutions buying 36 504 54
Institutions selling 10 283 22
Buyers to sellers 3.60 1.78 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.

GMTLRIOEAF
GMTL 1.00 0.37 0.19
RIO 0.37 1.00 0.18
EAF 0.19 0.18 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, GMTL, RIO and EAF?

Rio Tinto (RIO) is the largest by market capitalisation: Guardian Metal Resources (GMTL) $297.06M, Rio Tinto (RIO) $139.20B, Graftech International (EAF) $309.95M.

Which stock has performed better?

Over the past year Rio Tinto (RIO) returned the most: Rio Tinto (RIO) +18.7%, Graftech International (EAF) -37.3%. Over five years, Rio Tinto (RIO) compounded fastest (Rio Tinto (RIO) +5.4%/yr, Graftech International (EAF) -36.9%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Rio Tinto (RIO) has been the steadiest (Guardian Metal Resources (GMTL) 91.1%, Rio Tinto (RIO) 30.7%, Graftech International (EAF) 112.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, GMTL, RIO 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, Rio Tinto (RIO) 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.