Stock fact sheet · data as of
Sigma Lithium Corporation (SGML): fair value, margin of safety and Wheel Score
Ticker symbol SGML · Basic Materials · Industrial Materials · Canada · Speculative
Is SGML undervalued?
Sigma Lithium Corporation (SGML) closed at 5.62 on 5 Nov 2026. The GLS average fair value - the simple average of the 2 valuation models that produced a positive number - is 6.93, so the price sits 19% below it. 1 of the 2 models value the shares above the current price. A margin of safety between 10% and 30% is where most of the Sunday Scan candidates come from.
The average is built from just 2 models (DCF, 10 Cap) - the rest returned nothing because an input they need (dividends, free cash flow, book value) is zero or negative - so treat it with more caution than usual.
The nightly engine files SGML under Speculative - it is losing money or its Piotroski health score is 3 or lower - which caps its Wheel Score at 45 and keeps it out of the Sunday Scan.
Nine valuation models for SGML
Each model turns the latest filed numbers into a value per share; the GLS fair value is the simple average of the ones that produce a positive number. The last two rows are shown for reference and never enter the average. The Quote page lets you switch any model off and add your own margin of safety.
| Model | Value | vs price | What it measures |
|---|---|---|---|
| DCF | 4.08 | -27% | Present value of the projected free cash flows, discounted at the cost of capital |
| Graham Number | - | - | The most a defensive investor pays for the earnings and book value per share; no value tonight |
| Graham Growth | - | - | Graham's growth formula: EPS × (8.5 + 2 × growth), adjusted for bond yields; no value tonight |
| Lynch | - | - | EPS × the earnings growth rate (PEG of 1), growth capped at 25%; no value tonight |
| GLS Growth | - | - | EPS compounded ten years at the blended growth rate, discounted back at 15% a year; no value tonight |
| 10 Cap | 9.78 | +74% | Owner's earnings (operating cash flow less maintenance capex) capitalised at 10% |
| Payback Time | - | - | Eight years of compounded free cash flow: the price at which the business pays for itself; no value tonight |
| DDM | - | - | Dividend discount model: next year's dividend ÷ (10% − 3% growth); needs a dividend; no value tonight |
| EPV | - | - | Earnings power value: current EPS capitalised at 9% with no growth; no value tonight |
| Zombie (liquidation) | -1.67 | -130% | Current assets less all liabilities, per share: the balance-sheet floor. Not in the average |
| Wall St target | 10.00 | +78% | Analysts' average 12-month price target. Not in the average |
Quality and financial health
Sigma Lithium Corporation scores 5 of 9 on the Piotroski F-score: a middling result that falls one point short of the "Piotroski 6 or more" Wheel Trade Filter. Some of the nine tests on profitability, leverage and efficiency are failed, so the accounts are worth a look before selling a put on the name. A GLS Moat score of 0.7/10 is a weak reading: the accounts do not show returns and margins that competitors have been unable to wear down, so the Moat part of the Wheel Score contributes little.
Returns on capital are thin or negative - ROIC -25.1%, ROE -88.6%, ROA -17.1% - with debt at 2.53 times equity and a free-cash-flow yield of 6.6%. Debt of 2.53 times equity is on the high side for the sector and is worth checking against the cash flow before treating the stock as a long-term hold.
Sigma Lithium Corporation pays no dividend, so the DDM model does not apply and a covered-call holder earns only the premium and any price gain.
Institutional ownership scores 4/10, insider activity 5/10 and Congressional trading 5/10 on the GLS smart-money scales.
| Piotroski F-score | 5 / 9 | ROIC | -25.1% |
|---|---|---|---|
| GLS Moat | 0.7 / 10 | ROE | -88.6% |
| Debt / equity | 2.53 | ROA | -17.1% |
| Free-cash-flow yield | 6.6% | Payout ratio | 0% |
| Institutions | 4 / 10 | Insiders · Congress | 5 · 5 / 10 |
Wheel Score 27: Weak
With a Wheel Score of 27 Sigma Lithium Corporation sits in the Weak band. It fails filter 2, a real business, not a gamble - speculative (a loss, or a weak Piotroski score); and filter 4, financially healthy - Piotroski 5/9 (under 6); and filter 5, can repay its debt - 5.4 years to repay its debt (over 3); and filter 6, no serious red flags - Red Flags score 47 (under 60); and filter 7, a premium worth selling - implied volatility 93% (over 80%); and filter 8, big enough - market cap $633M (under $1.0B); Red Flags (weak) is its weakest part.
Implied volatility is 93%, above the 80% ceiling of the Wheel Trade Filter on premium. The premium looks generous, but moves of that size can blow through any strike. Chain open interest is 10,141 contracts across all expiries - enough for the wheel at normal size.
Volume runs at 2.8M shares a day on a market cap of $633M, with a beta of 0.60 - a low beta, so day-to-day moves are smaller than the market's; the Stability part of the Wheel Score rates that fair.
| Filter | Wheel Trade Filter | Result | Detail |
|---|---|---|---|
| 1 | Options that actually trade | Passes | Listed options with 1,000+ contracts of open interest and 100+ traded a day |
| 2 | A real business, not a gamble | Fails | speculative (a loss, or a weak Piotroski score) |
| 3 | Below fair value | Passes | Trading below the nine-model average fair value (margin of safety above 0) |
| 4 | Financially healthy | Fails | Piotroski 5/9 (under 6) |
| 5 | Can repay its debt | Fails | 5.4 years to repay its debt (over 3) |
| 6 | No serious red flags | Fails | Red Flags score 47 (under 60) |
| 7 | A premium worth selling | Fails | implied volatility 93% (over 80%) |
| 8 | Big enough | Fails | market cap $633M (under $1.0B) |
| 9 | Not a penny stock | Passes | Share price $5 or more |
| How it ranks | Rating | From | |
|---|---|---|---|
| Value | Good | 19% below fair value | |
| Premium | Fair | implied volatility 93% | |
| Moat | Weak | moat 0.7/10 | |
| Health | Fair | Piotroski 5/9 | |
| Red Flags | Weak | Red Flags score 47/100 | |
| Option trading | Fair | 1,731 contracts a day, 10,141 open interest | |
| Stability | Fair | beta 0.60, $633M company |
The Wheel Score ranks ~7,400 US stocks for selling cash-secured puts and covered calls: a stock must pass all 9 Wheel Trade Filters to score 70, and the score then ranks the ones that pass; the Sunday Scan is the top 10. It is updated nightly and is not a recommendation. How the Wheel Score works · the walkthrough lesson shows how it fits into a trade, start to finish.
Upcoming events
Sigma Lithium Corporation reports earnings on 13 Nov 2026 (before the open) - inside the 14-day window the Sunday Scan avoids, because a put sold now would carry the report's gap risk.
No analyst upgrades or downgrades were recorded in the last 30 days.
Earnings, dividend, IPO, split and economic calendars for the whole market, filterable to your watchlists.
Similar stocks in Industrial Materials
The 12 companies below are the closest to Sigma Lithium Corporation by market cap within the Industrial Materials industry, each with its own fact sheet; the Compare page puts up to eight of them side by side.
| Stock | Close | Fair value | MoS | Wheel | Mkt cap |
|---|---|---|---|---|---|
| LAR Lithium Argentina AG | 4.20 | - | - | 16Weak | $689M |
| GSM Ferroglobe PLC | 2.93 | 1.63 | -80% | 17Weak | $548M |
| UAMY United States Antimony Corporation | 2.98 | - | - | 15Weak | $446M |
| LAC Lithium Americas Corp. | 1.95 | - | - | 23Weak | $435M |
| NB NioCorp Developments Ltd. | 2.97 | 0.3511 | -746% | 23Weak | $433M |
| CRML Critical Metals Corp. | 6.37 | 0.1400 | -4449% | 20Weak | $936M |
| CMP Compass Minerals International, Inc. | 23.26 | 23.90 | +3% | 30Weak | $976M |
| TMQ Trilogy Metals Inc. | 2.19 | 0.3096 | -607% | 15Weak | $397M |
| USAS Americas Gold and Silver Corporation | 3.08 | - | - | 23Weak | $1.0B |
| NAK Northern Dynasty Minerals Ltd. | 0.6767 | 0.0662 | -922% | 11Weak | $380M |
| USAR USA Rare Earth Inc | 8.20 | 3.78 | -117% | 17Weak | $1.1B |
| WRN Western Copper and Gold Corporation | 1.60 | 0.0288 | -5462% | 9No options | $362M |
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Start free See the Sunday ScanQuestions about SGML
Is SGML undervalued right now?
By the GLS models, moderately: at 5.62 the stock trades 19% below the average fair value of 6.93 (data as of 5 Nov 2026).
What is the Wheel Score of SGML and what does it mean?
SGML scores 27 out of 100 (Weak) - it fails Wheel Trade Filters 2, 4, 5, 6, 7, 8. The Wheel Score ranks stocks for the wheel strategy - selling cash-secured puts, then covered calls if assigned - in two parts: the 9 pass/fail Wheel Trade Filters (busy options, a real business, below fair value, Piotroski 6 or more, debt it can repay, a Red Flags score of 60 or more, implied volatility of 25-80%, a $1 billion company, $5 a share) and a ranking of how strongly a stock passes on value, premium, moat, health, red flags, option trading and stability. A stock that fails any filter stays under 70; 70-84 is Good, 85 and above is Prime. The Sunday Scan is the top 10 that pass, sorted by Wheel Score.
What is the GLS fair value for SGML?
6.93 per share as of 5 Nov 2026 - the simple average of the 2 valuation models (out of nine: DCF, Graham Number, Graham Growth, Lynch, GLS Growth, 10 Cap, Payback Time, DDM and EPV) that produced a positive value. The models run every night on the latest filings; the Quote page lets you switch any of them off and add a margin of safety of your own.
When does Sigma Lithium Corporation report earnings next?
The next earnings report is due on 13 Nov 2026 (before the open), 8 days from the data date of 5 Nov 2026. The Calendars page lists every upcoming report with its time of day.
Does SGML have listed options, and how liquid are they?
Yes. The nightly snapshot found 24 listed contracts with 10,141 open interest across all expiries and implied volatility of 93% on the near-the-money contracts. The Options scanner lists the cash-secured put and covered call set-ups with premium and annualised yield worked out.