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ClearSign Technologies Corporation (CLIR) Stock Price & Analysis

ClearSign Technologies Corporation (CLIR) — MoonshotScore 17/100 (Weak band), calculated Oct 4, 2026. Price $3.51 (-1.13%), as of the Oct 2, 2026 trading session; market cap $22.1M.

Educational signal · not a buy or sell recommendation · How to read this

$3.51 −$0.04 (-1.13%) Market Cap $22.1M

ClearSign Technologies Corporation · CLIR · NASDAQ

ClearSign Technologies Corporation specializes in developing and deploying technologies aimed at enhancing energy efficiency and reducing emissions in industrial systems. Their solutions target the energy, chemical, and petrochemical sectors.

Price as of Oct 2, 2026

Key Statistics

17 of 100

MoonshotScore v2 · ClearSign Technologies (CLIR)

Weak
Business Quality Poor (3)
Financial Safety Strained (38)
Valuation Bubble (4)
Growth Durability Flat (42)
Momentum Falling (18)
Why this rating? Method, drivers & history

Bands for the MoonshotScore: Exceptional 80-100 · Strong 65-79 · Fair 45-64 · Weak below 45.

  • Business Quality — Is this a genuinely good business?
  • Financial Safety — Could this blow up on me?
  • Valuation — Am I paying a fair price?
  • Growth Durability — Is the growth real and likely to last?
  • Momentum — Is the market already moving on this?
The ten-second read ·

Bottom-tier quality, a strained balance sheet and an expensive valuation, though growth is only middling, and the price trend has turned against it. Business Quality: Poor; Financial Safety: Strained; Valuation: Bubble; Growth Durability: Flat; Momentum: Falling.

  • quarterly revenue $560,000 (Q2 FY2026, quarter ended Jun 30, 2026)
  • EPS beat 6 of 8
  • Altman Z -6.87 · Piotroski F 2

Holding back: weak fundamentals, a rich price, weak price trend

What has the MoonshotScore done over time?

MoonshotScore snapshots recorded for CLIR (29 recorded, newest six shown)
RecordedScoreBand
18Weak
18Weak
18Weak
18Weak
18Weak
18Weak

The score was 17 in the stored Oct 3, 2026 snapshot and remains 17 in the current publication computed Oct 4, 2026 (0); the largest pillar moves were Growth Durability -1 and Momentum -1; the pillar moves offset under the sector-relative weighting, so the headline score is unchanged.

Calculation uses the most recent completed US trading session. Live price changes do not update the score immediately.

Computed · Educational signal · not a buy or sell recommendation · How the MoonshotScore is computed →

Price & valuation

As of
MeasureValue
Latest provided price$3.51
Change on the day-1.13%
52-week range$3.16 – $11.20
Market capitalisation$22.1M
Shares traded on the day28.2K

Price & events

Other perspectives

Council score for ClearSign Technologies (CLIR): perspectives

Council is a separate blend of available disciplines; MoonshotScore above remains the five-pillar research rating.

9-Factor Breakdown

Revenue Growth Moderate
Gross Margin Moderate
Operating Leverage Moderate
Cash Runway Neutral
R&D Intensity Strong
Insider Activity Moderate
Trading Liquidity Strong
Price Momentum Weak
News Sentiment Neutral

Legends Council

6 lenses, 0 current

AI simulations built from the named investors' published principles. Not affiliated with, endorsed by, or the opinion of these individuals. How these lenses are built

Dalio-style lens (simulated) Ray Dalio Favorable read
Griffin-style lens (simulated) Ken Griffin Neutral read
Simons-style lens (simulated) Jim Simons Neutral read
Englander-style lens (simulated) Izzy Englander Favorable read
Klarman-style lens (simulated) Seth Klarman Unfavorable read
Moon AI lens (model) Neutral read

Read on: Sep 6, 2026 · older than the 27 hours refresh window; not a current reading

Munger's Mindset

Balance Sheet & Valuation · historical

Financial Health Weak
Margin of Safety Fairly Valued
Profit Margin Weak
Revenue Growth Strong
Debt/Equity Strong
ROE Negative
Gross Margin Neutral

Read on: Apr 29, 2026 · older than the 27 hours refresh window; not a current reading

How to read these bars and different assessments

Council is a separate blend of available disciplines; MoonshotScore above remains the five-pillar research rating.

Bars show each model's ordered assessment on its own scale, not a probability or a comparable investment return. The adjacent words give the assessment; more filled segments indicate a stronger model reading.

On Apr 29, 2026, the Munger lens read the price at that time as fairly valued against its own estimate of value.

Readings on this page are from Oct 5, 2026, except a card that shows its own read date.

Watch the CLIR film — every key number, told as a short cinematic story

~2 min · open the film

1 · What is it?

What is ClearSign Technologies (CLIR), and what does it report?

Short answer · as of

A current FMP business description is unavailable; the listing and provider classification below are the available identity facts. ClearSign Technologies Corporation (CLIR) is listed on NASDAQ. It employs 16 people and is led by Colin James Deller. In Q2 FY2026 it reported revenue of $560,000 and net income of -$1M. The market values it at $22.1M.

2 · Latest results

What do the latest results show for ClearSign Technologies (CLIR)?

Short answer · as of

The most recent reported quarter, Q2 FY2026, carried revenue of $560,000. Against analyst estimates the company has EPS beat 6 of 8 reports.

Quarterly income statement — 4 quarters
Revenue, net income and earnings per share by quarter
PeriodRevenueNet incomeEPS
Q2 FY2026$560,000-$1M-$0.22 (diluted)
Q1 FY2026$191,000-$2M-$0.39 (diluted)
Q4 FY2025$4M-$311,000-$0.05 (diluted)
Q3 FY2025$1M-$1M-$0.26 (diluted)
3 · Financial strengths and risks

What are the financial strengths and risks for ClearSign Technologies (CLIR)?

Short answer

What is holding it back is weak fundamentals, a rich price, weak price trend. The distress and quality screens read Altman Z -6.87 · Piotroski F 2. Trailing ratios: ROE -61.2% · ROA -57.0% · current ratio 3.85 · earnings yield -26.9% · free-cash-flow yield -22.1%.

Data-derived red flags

  • Financial-distress signal — its Altman Z-Score of -6.87 sits in the distress zone (elevated bankruptcy risk).
  • Negative return on equity (-61.2%) — the business is not currently generating profit on shareholder capital.
  • Weak fundamentals — a Piotroski F-Score of 2/9 flags soft profitability, leverage or efficiency.
5 · Peer comparison

How does ClearSign Technologies compare with its peers?

Short answer

ClearSign Technologies's score ranks 4th of 4 in the bounded comparison shown, against 3 same-model peers. These are company scores, not expected investment returns. The set lists named competitors first, then companies in the same data-provider industry classification closest in market value; that classification is the provider's, not our judgment of business similarity.

Peer set — price, market value and MoonshotScore
CompanyPriceMarket valueScore
Celanese Corporation (CE) Named competitor$44.19 Oct 2, 2026$4.85B41 5-pillar Oct 4, 2026
Fluor Corporation (FLR) Named competitor$49.90 Oct 2, 2026$6.97B29 5-pillar Oct 4, 2026
O-I Glass, Inc. (OI) Named competitor$5.60 Oct 2, 2026$860M25 5-pillar Oct 4, 2026
ClearSign Technologies (CLIR) — this page$3.51$22.1M17
LiqTech International, Inc. (LIQT) Same industry, near in market value$0.52 Date unavailable$17.2M— Model unavailable
ZONE (ZONE) Same industry, near in market value$0.13 Date unavailable$29.2M— Model unavailable
Birchtech Corp. (BCHT) Same industry, near in market value$1.50 Date unavailable$39.5M— Model unavailable
TOMI Environmental Solutions, Inc. (TOMZ) Same industry, near in market value$1.38 Date unavailable$10.6M— Model unavailable
Fuel Tech, Inc. (FTEK) Same industry, near in market value$1.66 Date unavailable$51.7M— Model unavailable
374Water, Inc. (SCWO) Same industry, near in market value$3.08 Date unavailable$53.9M— Model unavailable
Arq, Inc. (ARQ) Same industry, near in market value$1.94 Date unavailable$83.3M— Model unavailable
Energy Recovery, Inc. (ERII) Same industry, near in market value$6.77 Date unavailable$349M— Model unavailable
PureCycle Technologies, Inc. (PCT) Same industry, near in market value$4.39 Date unavailable$881M— Model unavailable

Only 5-pillar scores are ranked together. Other models are not directly comparable. Price and score dates are shown separately; market-value dates are unavailable.

The records behind this page

Insider activity

Form 4 records via FMP · Available records within the last 180 days, newest dated Jul 22, 2026 (coverage not recorded)

Transactions
7
Identified insiders
4
Purchases
3
Sales
0
Other transactions
4

Purchases and sales use the reported transaction category. Other transactions include awards, exercises, gifts, withholding and unclassified activity; an acquisition or disposition alone is not a purchase or sale. These records do not establish intent.

What has been published about ClearSign Technologies (CLIR)?

Read these with our analysis →

Investor Questions: CLIR Stock

These answers are editorial: 1 of these 9 answers is drawn from the CLIR research dossier (written May 7, 2026 by gemini-2.0-flash); the other 8 are question templates that restate figures shown above. Figures in this section are not part of the source register.

What does the MoonshotScore mean for CLIR?

CLIR carries the MoonshotScore stated above — the Weak band. This is an educational research signal, not a buy or sell recommendation. The number comes from the five-pillar engine (business quality, financial safety, valuation, growth durability, momentum), re-ranked daily against sector peers.

Is CLIR a good stock to buy?

Stock Expert AI does not rate CLIR buy, sell or hold. ClearSign Technologies Corporation carries a MoonshotScore, in the Weak band, a research rating against its peers rather than a forecast. Whether it fits is your call: check what it sells, whether it earns and what the price assumes. This is educational content, not investment advice.

What is the CLIR stock price today?

The last price recorded on this page for ClearSign Technologies Corporation (CLIR) is $3.51, as of the Oct 2, 2026 trading session (source: Financial Modeling Prep (FMP) · quote). It is a provider snapshot, not a live exchange feed, so check a brokerage quote before you trade.

What are the main risks for CLIR?

ClearSign Technologies Corporation faces several key risks, including intense competition from larger, more established companies with greater financial and technical resources. The company's small size and limited brand recognition make it vulnerable to market pressures and competitive pricing.

What are the key factors to evaluate for CLIR?

ClearSign Technologies Corporation (CLIR) holds a MoonshotScore in the low range. ClearSign serves industries facing increasing pressure to reduce emissions, positioning the company to benefit from stricter environmental regulations. Not financial advice.

How frequently does CLIR data refresh on this page?

CLIR's price is the last quote we recorded, from the Oct 2, 2026 trading session. Pages are served from a cache, so the copy you are reading can lag that quote. The quote is a provider snapshot, not an exchange feed. Fundamentals follow quarterly filings. V2 is recalculated from the most recent completed US trading session; the score's own date shows its last successful run.

What has driven CLIR's recent stock price performance?

ClearSign Technologies Corporation (CLIR) moves on earnings results, analyst revisions, sector rotation, and market sentiment. Notable catalyst: Innovative burner and flame sensor technologies. See the News tab for the latest drivers. Past performance does not predict future results.

Should investors consider CLIR overvalued or undervalued right now?

ClearSign Technologies Corporation (CLIR) has no trailing P/E available here, so lean on price-to-sales and cash flow in the Financials tab. Compare P/E, P/S, and EV/EBITDA against sector peers for a full view.

Can I buy fractional shares of CLIR?

Fractional-share availability for ClearSign Technologies Corporation (CLIR) depends on your brokerage, account and supported securities. Check the broker's current eligibility, minimums and fees before placing an order.

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Machine-generated analysis by Stock Expert AI — model gemini-2.0-flash, generated May 7, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief.

Sources — records for every figure on this page (17 figures)

The 17 rows below are exactly the facts the evidence-backed sections of this page printed — the 10-second verdict, the MoonshotScore, price and market value, the five questions with their receipts, and the records behind this page. Known dates and sources are recorded on their own rows; an em dash or UNRECORDED tier preserves a stored observation without inventing either. The quarterly income statement is provider-standardized (FMP) under one row, and scale definitions — a 0-100 rating, the band ladder, the Piotroski 0–9 range — are fixed rather than measured. No number in those sections was generated by a model. The register does not cover quoted third-party headlines, the dated council readings, or the Frequently Asked Questions; each of those says where it came from where it stands.

"As of" is the date the value is true for where the source carries one — a quarter end, a filing date, a price close, the day the score was computed. A cached observation with no source date remains undated; the page publication date is not used as a substitute.

FMP — 9 facts from Financial Modeling Prep endpoint families

FMP facts used on this page
Fact IDFactValue as shownAs ofTierSource
px.lastLatest provided price$3.51FMPFinancial Modeling Prep (FMP) · quote — Dated to the US trading session the price belongs to, derived from the quote record's timestamp (weekend and pre-open reads roll back to the previous weekday; exchange holidays are not modelled). The record does not establish an exchange execution time. Retrieved 2026-10-05T00:24:37.772Z.
px.changeChange on the day-1.13%FMPFinancial Modeling Prep (FMP) · quote
px.mcapMarket capitalisation$22.1MFMPFinancial Modeling Prep (FMP) · quote — Date unknown Market cap record date: 2026-10-02. FMP quote timestamp: 2026-10-02T20:00:00.000Z. Captured from FMP at 2026-10-05T00:24:36.555Z. No share-count basis is inferred; this page preserves the reported amount instead of recalculating it from shares.
px.change_absChange on the day, in dollars−$0.04FMPFinancial Modeling Prep (FMP) · quote
fin.q_revenueRevenue, Q2 FY2026$560,000FMPFinancial Modeling Prep (FMP) · income statement (quarterly)
px.volumeShares traded on the day28.2KFMPFinancial Modeling Prep (FMP) · quote
fin.q_incomeNet income, Q2 FY2026-$1MFMPFinancial Modeling Prep (FMP) · income statement (quarterly)
fin.q_tableQuarterly income statement4 quarters through Q2 FY2026FMPFinancial Modeling Prep (FMP) · income statement (quarterly), as filed
own.insidersInsider transactions via FMP7 transactions · 3 purchases, 0 sales, 4 other transactions · 4 identified insiders · available records within the last 180 days, newest dated Jul 22, 2026 (coverage not recorded)FMPFinancial Modeling Prep (FMP), carrying Form 4 transaction records — Purchases and sales use the reported transaction category. Other transactions include awards, exercises, gifts, withholding and unclassified activity; an acquisition or disposition alone is not a purchase or sale. These records do not establish intent.

UNRECORDED — 6 facts from stored observations whose source was not recorded

UNRECORDED facts used on this page
Fact IDFactValue as shownAs ofTierSource
earn.historyReported versus estimated, recent quartersEPS beat 6 of 8UNRECORDEDStored earnings-history observation — Captured 2026-09-01 · Expired observation
fin.scoresDistress and quality screensAltman Z -6.87 · Piotroski F 2UNRECORDEDStored financial-scores observation — Captured 2026-10-03 · Expired observation
px.range5252-week range$3.16 – $11.20UNRECORDEDStored company-profile observation — Captured 2026-10-02
id.employeesEmployees16UNRECORDEDStored company-profile observation — Captured 2026-10-02
id.ceoChief executiveColin James DellerUNRECORDEDStored company-profile observation — Captured 2026-10-02
fin.ratiosReturn and yield ratios (trailing twelve months)ROE -61.2% · ROA -57.0% · current ratio 3.85 · earnings yield -26.9% · free-cash-flow yield -22.1%—UNRECORDEDStored key metrics — Date unknown

OURS — 2 facts from Stock Expert AI's own score and rank

OURS facts used on this page
Fact IDFactValue as shownAs ofTierSource
ours.moonshotMoonshotScore v217 of 100 · Weak · pillars 3 / 38 / 4 / 42 / 18OURSStock Expert AI MoonshotScore v2 engine
ours.moonshot_changeMoonshotScore movement17 (stored snapshot Oct 3, 2026) → 17 (current publication computed Oct 4, 2026) (0)OURSStock Expert AI current score publication and immutable score snapshots
Published
Research standards
Methodology · Editorial policy · Corrections
Data Sources & Methodology
Figures come from Financial Modeling Prep (FMP). If FMP has no figure for a ticker, a price or fundamental may come from a Yahoo Finance fallback, or a price from an Alpaca fallback. SEC EDGAR is used only for filing links and company identity details (legal name, address), never for figures. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.