Tone mix
Week by week 52 weeks
Share of Sigma Lithium Corporation Common Shares's 215 headlines over the last 52 weeks by the model's call, and the same mix week by week.
Biggest swings in the last year
The weeks whose tone moved furthest from the 8-week average, with the story most outlets carried that week.
- Week of Nov 3, 2025 · tone -100Sigma Lithium's Stunning Collapse: From Market Darling to Cautionary Tale in Just 48 Hours-120
- Week of Oct 27, 2025 · tone -65Liquidity Woes Deepen For Sigma Lithium After Supplier Shake-Up-105
- Week of Jan 5, 2026 · tone -68Sigma Lithium's (SGML) Underperform Rating Reiterated at Bank of America-95
- Week of Jul 6, 2026 · tone +99Is Sigma Lithium Corporation (SGML) Stock Strengthening After Favorable Brazilian Court Decision?+86
- Week of Apr 6, 2026 · tone -50Sigma Lithium (SGML) Drops as Short Seller Flags Legal and Operational Risks-82
- Week of Dec 15, 2025 · tone +100Why Sigma Lithium Stock Ran Higher Today+70
Daily headline tone, last 90 sessions
Hover a session for its totals; click to pin.
Each point is the average score of the headlines about Sigma Lithium Corporation Common Shares in one trading session, with the 8-session average drawn through it. Sessions with no headline about the company have no point.
Tone by period
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| Last 7 sessions | 5 | +75 |
| Last 30 sessions | 29 | +10 |
| Last 90 sessions | 67 | +12 |
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Every headline in the period counts equally.
Headlines on Friday, October 30, 2026
1 headline, average tone +98: 1 positive, 0 neutral and 0 negative. Showing all 1.
- www.proactiveinvestors.com · 1 outletSigma Lithium bets on lower costs and Brazil's industrial future | NASDAQ:SGML, TSX-V:SGML, ASX:SAUPositive
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| Sigma Lithium bets on lower costs and Brazil's industrial future | NASDAQ:SGML, TSX-V:SGML, ASX:SAU | www.proactiveinvestors.com | 1 | Positive |
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Headlines on Monday, October 26, 2026
4 headlines, average tone +70: 3 positive, 1 neutral and 0 negative. Showing all 4.
- www.finanznachrichten.de · 1 outletSigma Lithium Corporation: Sigma Lithium Extends 4-Year US$100 Million Senior Secured Debt to June 2027; 7,090t Produced Since RestartPositive
- www.proactiveinvestors.com · 1 outletSigma Lithium extends debt runway as restart gathers pacePositive
- www.proactiveinvestors.com · 1 outletSigma Lithium extends $100M debt to June 2027 as Brazil operations resumePositive
- www.tickerreport.com · 1 outletComparing Sigma Lithium (NASDAQ:SGML) and SunCoke Energy (NYSE:SXC)Neutral
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| Sigma Lithium Corporation: Sigma Lithium Extends 4-Year US$100 Million Senior Secured Debt to June 2027; 7,090t Produced Since Restart | www.finanznachrichten.de | 1 | Positive |
| Sigma Lithium extends debt runway as restart gathers pace | www.proactiveinvestors.com | 1 | Positive |
| Sigma Lithium extends $100M debt to June 2027 as Brazil operations resume | www.proactiveinvestors.com | 1 | Positive |
| Comparing Sigma Lithium (NASDAQ:SGML) and SunCoke Energy (NYSE:SXC) | www.tickerreport.com | 1 | Neutral |
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Headlines on Thursday, October 15, 2026
1 headline, average tone 0: 0 positive, 1 neutral and 0 negative. Showing all 1.
- www.dailypolitical.com · 1 outletAlcoa (NYSE:AA) vs. Sigma Lithium (NASDAQ:SGML) Critical ReviewNeutral
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| Alcoa (NYSE:AA) vs. Sigma Lithium (NASDAQ:SGML) Critical Review | www.dailypolitical.com | 1 | Neutral |
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Headlines on Tuesday, October 13, 2026
2 headlines, average tone 0: 0 positive, 2 neutral and 0 negative. Showing all 2.
- www.tickerreport.com · 1 outletSigma Lithium (NASDAQ:SGML) and New Found Gold (NYSE:NFGC) Critical ContrastNeutral
- www.dailypolitical.com · 1 outletSigma Lithium (NASDAQ:SGML) versus New Found Gold (NYSE:NFGC) Head-To-Head ReviewNeutral
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| Sigma Lithium (NASDAQ:SGML) and New Found Gold (NYSE:NFGC) Critical Contrast | www.tickerreport.com | 1 | Neutral |
| Sigma Lithium (NASDAQ:SGML) versus New Found Gold (NYSE:NFGC) Head-To-Head Review | www.dailypolitical.com | 1 | Neutral |
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Headlines on Monday, October 12, 2026
1 headline, average tone 0: 0 positive, 1 neutral and 0 negative. Showing all 1.
- www.themarketsdaily.com · 1 outletCritical Contrast: Alcoa (NYSE:AA) and Sigma Lithium (NASDAQ:SGML)Neutral
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| Critical Contrast: Alcoa (NYSE:AA) and Sigma Lithium (NASDAQ:SGML) | www.themarketsdaily.com | 1 | Neutral |
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How the score works
A headline's tone is not a forecast of the share price. Read the headlines themselves before acting on an average.
Which headlines count
Headlines come from the GDELT global news feed from 2019-09-23 on. A headline counts only when a model judges it to be about Sigma Lithium Corporation Common Shares, not a passing mention.
How each headline is scored
The model calls each headline positive, neutral or negative news for the company. A period's tone is the share of positive minus negative headlines, from -100 (all negative) to +100 (all positive).
When a headline counts
Headlines published by 9:15 a.m. New York time belong to that day's session. Later and weekend headlines move to the next trading session.
Repeated stories
When several outlets carry the same headline, it counts once per session.