Sigma Lithium Corporation
Sigma Lithium Corporation is a lithium producer focused on the exploration, development, and processing of hard-rock lithium deposits in Brazil. Its operations center on the Grota do Cirilo project in Minas Gerais, where the company produces lithium oxide concentrate for use in the lithium-ion battery supply chain. Sigma Lithium Corporation supplies materials that support electric vehicle batteries and energy storage applications, making it part of the broader market for critical minerals used in the energy transition. The company emphasizes industrial-scale production, mineral beneficiation, and socially and environmentally sustainable operations across its Brazilian assets. Based in São Paulo, Brazil, Sigma Lithium Corporation plays a specialized role in the global market for battery-grade lithium materials.
C$11.70
-C$0.20 (-1.68%)
EOD Oct 21, 2026
The business is unprofitable at the operating level (-11.05% margin). The thesis depends entirely on whether and when it reaches sustainable profitability.
Revenue grew 5.1%, steady but not accelerating. Margins contracted 5.8pp, which offsets some of the top-line progress.
ROIC dropped from -1.48% to -4.87%, capital efficiency is deteriorating. Negative free cash flow of -$8M. The business is consuming cash, not generating it.
Price History
Valuation & Multiples
Based on TTM earnings · Diluted shares
Profitability & Returns
Revenue (TTM)
$142M
▲ +5.1% YoY
Net Income (TTM)
-$28M
▼ -43.0% YoY
Op. Margin
14.04%
▼ -5.8pp YoY
ROIC
-4.87%
▼ -3.4pp YoY
Cash Flow & Balance Sheet
FCF (TTM)
$30M
▲ +64.5% YoY
Op. Cash Flow (TTM)
$43M
▲ +120.0% YoY
Net Debt
$137M
Cash & Equiv.
$6M
Continue Research
Is Sigma Lithium (SGML) overvalued?
Sigma Lithium (SGML) trades above a two-stage DCF intrinsic value of about $5.35 per share, so at $11.70 the stock looks overvalued (54.3% above estimated intrinsic value). A high multiple is not the same as overvalued: fast-growing, high-quality businesses can deserve a premium. See the general approach in how to tell if a stock is overvalued.
On quality, Sigma Lithium scores 15/100 on Intrinsiqq's quality scorecard (a lower-quality business on these measures), weighing growth, margins, returns on capital, share count, and balance-sheet strength. All figures are computed from company filings; read the full methodology, or see how the market compares in our US profitability statistics. This is analysis, not investment advice.
Frequently asked
What is Sigma Lithium's fair value?+
Intrinsiqq's two-stage DCF estimates an intrinsic value of about $5.35 per share for SGML, projecting its recent free cash flow forward with a growth rate that fades toward a long-run rate and discounting it back to today. Applying a 25% margin of safety gives a more conservative fair-value entry around $4.01. At today's $11.70, that puts the stock about 54.3% above estimated intrinsic value. The result is sensitive to the growth and discount-rate inputs, so it is best to run conservative, base and optimistic cases. You can adjust all of them yourself with the sliders on the DCF tab.
Is Sigma Lithium a high-quality business?+
Sigma Lithium scores 15 out of 100 on Intrinsiqq's quality score, a weighted blend of 4 metrics each scored 0 to 100, which makes it a lower-quality business on these measures. Recent fundamentals include a 14.0% operating margin and a -4.9% return on invested capital. The score weighs revenue and free-cash-flow growth, operating margins, return on invested capital, share-count change, and balance-sheet strength, all computed from company filings, not opinion. Because valuation only means something relative to quality, the full metric-by-metric breakdown is on the quality scorecard.
Is Sigma Lithium a good stock to buy right now?+
That depends on valuation and quality together, not either alone. SGML currently trades above its estimated intrinsic value and scores 15/100 on quality (lower-quality). A cheap price is only a bargain if the business is durable, and a premium can be justified by genuine quality, so the two questions, "is it cheap?" and "is it good?", only make sense side by side. Read the valuation against the quality scorecard, run the DCF on your own assumptions, and decide for yourself. This is analysis from company filings, not investment advice.
Related stocks: Other Industrial Metals & Mining
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Data sourced from company filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.
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