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Abivax S.A. (0RA9) fair value: what the stock is really worth

As of Oct 2, 2026: fair value of Abivax S.A. €42.29, price €83.50, upside -49.4%, quality 30 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.

  1. Fair value above price? No
  2. Good quality? No
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Industrials · GB

AS Thin data Sep 24, 2026

Abivax S.A.

0RA9 · LSE

Weakest SetupStrongly overvalued and low quality.

!Fair value €42.29 · Strongly overvalued (−49.4%)
!Quality 30/100
!Mixed Growth (revenue 3y +36.9 %/yr)
!Low debt · negative free cash flow
!Trails peers (1/7)
!Narrow moat 12/100
!Evidence only low, so the estimate is less certain
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What runs behind every stock

26 valuation models 8 families, DCF to NCAV 37 quality factors margins, balance sheet, cashflow, debt 6 AI factors moat, what no ratio measures 2,000+ data points verified, per stock, median

69 individual criteria per stock, every one traceable See the method →

Price vs Fair Value

€135.90 €4.85 Fair Value €42.29 Aug 2018 Oct 2026

White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 24, 2026.

How to read this chart

60‑month range €4.85 – €135.90 · fair‑value band €27.91 – €52.87 · the €83.50 price screens above the €42.29 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 24, 2026.

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Company profile

ABIVAX, a clinical-stage biotechnology company, develops therapeutics that harness the body's natural regulatory mechanisms to stabilize the immune response in patients with chronic inflammatory diseases.

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ABIVAX, a clinical-stage biotechnology company, develops therapeutics that harness the body's natural regulatory mechanisms to stabilize the immune response in patients with chronic inflammatory diseases. Its lead drug candidate includes obefazimod, which is in Phase 3 clinical development for the treatment of moderately to severely active UC, as well as Phase 2b clinical trials for Crohn's disease. The company was incorporated in 2013 and is headquartered in Paris, France.

Stock analysis

Abivax S.A. (0RA9) currently trades at €83.50, while our model-based Fair Value estimate is €42.29, 49.4% below the price, so the stock looks overvalued today.

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Valuation

How firm this estimate is: it rests on 1 models at a data quality of 95/100, which puts the evidence level at low.

Scenario range: €27.91 (bear) to €52.87 (bull), the price of €83.50 sits above it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.

Quality & growth

The Quality Score stands at 30/100 (below-average quality), in the Industrials sector.

Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.

Abivax S.A. reported revenue of €10.8M in FY2024 versus €14.0K in FY2020, a compound +426.9%/yr. Reported net income was −€336M in FY2025.

Key figures

Market cap €873M · EPS (TTM) €−2.47 · Return on equity −157% · Return on assets (EBIT) −58.7% · Operating margin −4,184% · Revenue (TTM) €4.9M · Revenue growth (YoY) +35.2% · Free cash flow −€162M.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 32 out of 100 (medium confidence).

What moves the price

The share trades about 39% below its 52-week high and 33% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Industrials peers we cover trades at 10% fair-value upside, at −49%, 0RA9 screens richer than that median.

Fair Value models

Bear €27.91 Fair Value €42.29 Bull €52.87
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above is their evidence-weighted blend, not the output of a single model. Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds. Evidence ⓘEvidence = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
Highest evidence
NCAV (Graham) €22.80 €30.56 €45.61 54
All 1 models by family
Asset-Based
NCAV (Graham) €22.80 €30.56 €45.61 54

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Quality Score breakdown

Overall quality 30/100

Of which business quality 33 · Market factors (momentum, volatility) 36

Profitability 0
Margins and returns on capital today
Quality Growth 90
Are margins and returns improving?
Cashflow 0
Earnings quality: real cash, not paper profit
Fin. Strength 85
Balance sheet, leverage, solvency risk
Investment 33
Disciplined investing over empire-building
Low Volatility 50
Calm price path (market factor)
Momentum 27
Price trend over the last 3–12 months (market factor)
52W Momentum 37
Distance to the 52-week high (market factor)
Net Issuance 0
Share count: buybacks or dilution?

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Revenue & earnings trend

Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card. 35/100
Revenue is growing, but margins or cash flow do not fully confirm the trend.
Revenue growth 1 year
+140.2%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+36.9%
Revenue growth 11 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+57.1%
Profit margin (trend) ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.
−2,434.1% (2018) → −1,718.2% (2024)
What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2025 is a loss year, no rate is defined from a loss
not computed

0RA9 screens overvalued: fair value 49% below the price. Compare with Vertex Pharmaceuticals Incorporated →

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Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Biotechnology · 625 stocks

Beats the industry median on 1/6 measures
Overall it trails its industry peers.
Valuation
Quality Score 33 · Below median
Fair Value upside −49.4% · Below median
Profitability
Return on assets −44.7% · Bottom 25%
Growth and dividend
Revenue growth 35.2% · Top 25%
Balance sheet
Debt / equity 0.08× · Above median

Valuation Multiplesvs Biotechnology median · lower = cheaper

P/B 2.16× · Pricier than median

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)0 · sector 0
FUTURE (revenue growth)100 · sector 0
PAST (return on equity)0 · sector 0
HEALTH (low debt)96 · sector 97
DIVIDEND (yield)0 · sector 22

VALUE 0: the price sits above our fair-value range.

Context: sector, industry, market

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

Similar stocks

10 more Biotechnology stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value
Vertex Pharmaceuticals Incorporated VRTX $527.67 $580.44 +10%
Regeneron Pharmaceuticals, Inc REGN $752.25 $1,275 +69%
argenx SE ARGX $959.49 $918.60 −4%
CSL Limited CSL A$175.35 A$192.89 +10%
Samsung Biologics Co 207940 1,354,000 KRW 1,489,400 KRW +10%
BeOne Medicines AG ONC $360.85 $280.94 −22%
Alnylam Pharmaceuticals, Inc ALNY $255.96 $217.88 −15%
Royalty Pharma plc RPRX $58.21 $19.01 −67%
Celltrion, Inc 068270 177,400 KRW 74,519 KRW −58%
WuXi Biologics (Cayman) Inc 2269 HK$53.00 HK$58.30 +10%

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Abivax S.A. · Fair Value
€42.29 −49%Fair Value
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Cite: Fair Value Calculator (2026). "Abivax S.A. Fair Value". https://www.fairvalue-calculator.com/stock/0RA9

Frequently asked questions

Is Abivax S.A. (0RA9) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of €42.29 versus a price of €83.50, about −49% upside (overvalued).
What is the fair value of 0RA9?
Our model-based fair value for Abivax S.A. is €42.29 (as of Sep 24, 2026), built from audited fundamentals. The current price: €83.50.
What is the quality score of 0RA9?
Abivax S.A. has a Quality Score of 30/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Abivax S.A. (0RA9)?
Our model-based price target is the fair value of €42.29 (as of Sep 24, 2026) from 1 valuation models. Cautious scenario €27.91, optimistic scenario €52.87. It is a calculation from audited fundamentals, not an analyst target.
What is the Abivax S.A. stock forecast for 2026?
Our models put fair value at €42.29, about −49% upside versus a price of €83.50 (overvalued). Cautious scenario €27.91, optimistic scenario €52.87. The calculation is refreshed regularly with new filings.
What is the revenue of Abivax S.A. (0RA9)?
Abivax S.A. reported trailing-twelve-month revenue of about €4.9M (latest available figure, as of Sep 24, 2026).
What is the intrinsic value of Abivax S.A. (0RA9)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Abivax S.A. it is €42.29 per share (as of Sep 24, 2026), against a price of €83.50. It is the blended result of 1 valuation models (cash flow, earnings, asset, dividend).
Is Abivax S.A. stock overvalued or undervalued in 2026?
As of Sep 24, 2026, 0RA9 trades above its calculated fair value: price €83.50, fair value €42.29, a gap of about −49% (overvalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of 0RA9?
No. The price is what the market pays today (€83.50); the fair value is what the company's own numbers justify (€42.29). For Abivax S.A. the two are €41.21 per share apart. That gap is exactly why we show both numbers side by side.
How much is Abivax S.A. worth?
The market values Abivax S.A. at about €873M (market capitalisation, as of Sep 24, 2026). Per share that is €83.50; our models calculate a fair value of €42.29 per share.
What do the bullish and bearish scenarios say about 0RA9?
Our models span a range for Abivax S.A.: cautious scenario €27.91, base €42.29, optimistic €52.87 per share (as of Sep 24, 2026, price €83.50). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Abivax S.A. (0RA9)?
Balance-sheet figures for Abivax S.A. (as of Sep 24, 2026): return on equity −157.1%, debt of 0.08 per unit of equity. They feed the Quality Score of 30/100, which measures business quality independently of the share price.
How far is 0RA9 from its 52-week high?
Abivax S.A. trades at €83.50, about 39% below its 52-week high of €135.90 and 33% above the low of €63.00 (as of Oct 2, 2026). Distance from the high says nothing about value: that is what the fair value of €42.29 is for.
Which stocks are comparable to Abivax S.A.?
From the same area (Industrials) we also value Vertex Pharmaceuticals Incorporated, Regeneron Pharmaceuticals, Inc, argenx SE, CSL Limited, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Abivax S.A. stock attractive at the current price?
The data as of Sep 24, 2026: price €83.50, calculated fair value €42.29 (−49%), Quality Score 30/100, from 1 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of 0RA9 calculated?
We run Abivax S.A. through 1 models from four families: discounted cash flow, earnings models, asset and balance-sheet models, and dividend models. Every model gets the same audited fundamentals; the result is the weighted average of €42.29, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 14.5 % above its aggregate fair value. Abivax S.A. itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Abivax S.A. (0RA9)?
The closing price on Oct 2, 2026 was €83.50. Our model-based fair value is €42.29, about −49% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Abivax S.A. right now?
The price sits above even our optimistic bull case (€52.87). The favourable scenario is already priced in. Weak quality (30/100) and above fair value at the same time, the margin of safety is missing on both counts. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution. A fairly wide model range (€27.91 to €52.87) leaves room in how you read the outcome.

Key figures of Abivax S.A.

How large is the market capitalisation of Abivax S.A. (0RA9)?
The market capitalisation of Abivax S.A. is €873M. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What are the earnings per share of Abivax S.A. (0RA9)?
Earnings per share at Abivax S.A. are €−2.47. Earnings per share over the last twelve months: total profit spread across every single share.
What is the return on equity of Abivax S.A. (0RA9)?
The return on equity (ROE) of Abivax S.A. is −157% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Abivax S.A. (0RA9)?
On an EBIT basis the return on assets of Abivax S.A. is −58.7% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of Abivax S.A. (0RA9)?
The operating margin of Abivax S.A. is −4,184% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Abivax S.A. (0RA9)?
Revenue at Abivax S.A. is growing +35.2% versus a year earlier (3y avg +36.9%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How much free cash flow does Abivax S.A. (0RA9) generate?
The free cash flow of Abivax S.A. is −€162M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net cash does Abivax S.A. (0RA9) hold?
Abivax S.A. holds more cash than debt, €485M net (fiscal year 2025). The company holds more cash than debt, a safety cushion.
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