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Coya Therapeutics, Inc. (COYA) fair value: what the stock is really worth

As of Sep 23, 2026: fair value of Coya Therapeutics, Inc. $1.56, price $5.04, upside -69.1%, quality 38 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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Healthcare · US · ISIN US22407B1089

CT Coya Therapeutics, Inc. logo Thin data Sep 24, 2026

Coya Therapeutics, Inc.

COYA · US

Weakest SetupStrongly overvalued and low quality.

!Fair value $1.56 · Strongly overvalued (−69%)
!Quality 38/100
!Mixed Growth (revenue YoY +123.6 %/yr)
!negative free cash flow
!Trails peers (1/7)
!Narrow moat 10/100
!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

$10.19 $3.30 Fair Value $1.56 Dec 2022 Sep 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

45‑month range $3.30 – $10.19 · fair‑value band $1.03 – $1.95 · the $5.04 price screens above the $1.56 fair value. Dashed = 300-day average. As of Sep 24, 2026.

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Company profile

Coya Therapeutics, Inc., a clinical-stage biotechnology company, engages in the development of proprietary therapies to enhance the function of regulatory T cells (Tregs). Its candidate product pipeline is based on therapeutic modalities, such as Treg-enhancing biologics, Treg-derived exosomes, and autologous Treg cell therapy.

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Coya Therapeutics, Inc., a clinical-stage biotechnology company, engages in the development of proprietary therapies to enhance the function of regulatory T cells (Tregs). Its candidate product pipeline is based on therapeutic modalities, such as Treg-enhancing biologics, Treg-derived exosomes, and autologous Treg cell therapy. The company develops COYA 302, a biologic combination for subcutaneous administration intended to enhance Treg function while depleting T effector function and activated macrophages in Phase 2 trial for use in the treatment of amyotrophic lateral sclerosis, as well as frontotemporal dementia, Alzheimer's disease (AD), and Parkinson's disease. In addition, its pre-clinical product candidates include COYA 301, a low-dose interleukin 2 product candidate to treat AD; COYA 303, an investigational biologic combination of COYA 301 and a glucagon-like-peptide-1 receptor agonist for the treatment of inflammatory diseases; COYA 201, an antigen directed Treg-derived exosome product candidate to treat neurodegenerative, autoimmune, and metabolic diseases; COYA 206, an antigen directed Treg-derived exosome product candidate; and COYA 101. It has a collaboration with Dr. Reddy's Laboratories SA for the development and commercialization of COYA 302, an investigational combination therapy for treatment of amyotrophic lateral sclerosis. Coya Therapeutics, Inc. was founded in 2020 and is headquartered in Houston, Texas.

Stock analysis

Coya Therapeutics, Inc. Common Stock (COYA) currently trades at $5.04, while our model-based Fair Value estimate is $1.56, implying the stock looks roughly 223.9% overvalued today.

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Valuation

How firm this estimate is: it rests on 1 models at a data quality of 96/100, which puts the evidence level at low.

Scenario range: $1.03 (bear) to $1.95 (bull), the price of $5.04 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 38/100 (below-average quality), in the Healthcare sector.

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

Coya Therapeutics, Inc. Common Stock reported revenue of $7.9M in FY2025 versus $0 in FY2021. Reported net income was −$21.2M in FY2025.

Key figures

Market cap $118M · P/S ratio 13.6 · EPS (TTM) $−1.07 · Net margin −270% · Return on equity −60.5% · Return on assets (EBIT) −63.4% · Operating margin −2,890% · Revenue (TTM) $8.0M.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 38 out of 100 (low confidence).

What moves the price

The share trades about 32% below its 52-week high and 33% above its 52-week low, currently above its 200-day average.

For context, the median of 10 Healthcare peers we cover trades at −5% fair-value upside, at −69%, COYA screens richer than that median.

Fair Value models

Bear $1.03 Fair Value $1.56 Bull $1.95
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. 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) $0.9200 $1.23 $1.83 51
All 1 models by family
Asset-Based
NCAV (Graham) $0.9200 $1.23 $1.83 51

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Quality Score breakdown

Overall quality 38/100

Of which business quality 43 · Market factors (momentum, volatility) 41

Profitability 6
Margins and returns on capital today
Quality Growth 78
Are margins and returns improving?
Cashflow 25
Earnings quality: real cash, not paper profit
Fin. Strength 100
Balance sheet, leverage, solvency risk
Investment 50
Disciplined investing over empire-building
Low Volatility 46
Calm price path (market factor)
Momentum 44
Price trend over the last 3–12 months (market factor)
52W Momentum 30
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. 31/100
Revenue is growing, but margins or cash flow do not fully confirm the trend.
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

COYA screens 224% overvalued. 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 · 649 stocks

Beats the industry median on 1/6 measures
Overall it trails its industry peers.
Valuation
Quality Score 43 · Below median
Fair Value upside −69% · Below median
Profitability
Return on assets −32% · Bottom 25%
Growth and dividend
Revenue growth 49% · Top 25%

Valuation Multiplesvs Biotechnology median · lower = cheaper

P/B 2.75× · Pricier than median
P/S (TTM) 14.74× · Priciest 25%

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)0 · sector 97
DIVIDEND (yield)0 · sector 23

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 $516.34 $567.97 +10%
Regeneron Pharmaceuticals, Inc REGN $801.82 $1,252 +56%
argenx SE ARGX $963.79 $918.60 −5%
Samsung Biologics Co 207940 1,366,000 KRW 1,502,600 KRW +10%
CSL Limited CSL A$179.12 A$197.03 +10%
Alnylam Pharmaceuticals, Inc ALNY $251.65 $218.36 −13%
Royalty Pharma plc RPRX $58.52 $24.22 −59%
BeOne Medicines AG 6160 HK$218.20 HK$169.72 −22%
Celltrion, Inc 068270 177,400 KRW 74,519 KRW −58%
BioNTech SE BNTX $100.87 $63.62 −37%

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Coya Therapeutics, Inc. Common Stock · Fair Value
$1.56 −224%Fair Value
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Cite: Fair Value Calculator (2026). "Coya Therapeutics, Inc. Common Stock Fair Value". https://www.fairvalue-calculator.com/stock/COYA

Frequently asked questions

Is Coya Therapeutics, Inc. (COYA) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of $1.56 versus a price of $5.04, about −69% upside (overvalued).
What is the fair value of COYA?
Our model-based fair value for Coya Therapeutics, Inc. Common Stock is $1.56 (as of Sep 24, 2026), built from audited fundamentals. The current price: $5.04.
What is the quality score of COYA?
Coya Therapeutics, Inc. Common Stock has a Quality Score of 38/100. 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 Coya Therapeutics, Inc. (COYA)?
Our model-based price target is the fair value of $1.56 (as of Sep 24, 2026) from 1 valuation models. Cautious scenario $1.03, optimistic scenario $1.95. It is a calculation from audited fundamentals, not an analyst target.
What is the Coya Therapeutics, Inc. Common Stock stock forecast for 2026?
Our models put fair value at $1.56, about −69% upside versus a price of $5.04 (overvalued). Cautious scenario $1.03, optimistic scenario $1.95. The calculation is refreshed regularly with new filings.
What is the revenue of Coya Therapeutics, Inc. (COYA)?
Coya Therapeutics, Inc. Common Stock reported trailing-twelve-month revenue of about $8.0M (latest available figure, as of Sep 24, 2026).
What is the intrinsic value of Coya Therapeutics, Inc. (COYA)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Coya Therapeutics, Inc. Common Stock it is $1.56 per share (as of Sep 24, 2026), against a price of $5.04. It is the blended result of 1 valuation models (cash flow, earnings, asset, dividend).
Is Coya Therapeutics, Inc. Common Stock stock overvalued or undervalued in 2026?
As of Sep 24, 2026, COYA trades above its calculated fair value: price $5.04, fair value $1.56, a gap of about −69% (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 COYA?
No. The price is what the market pays today ($5.04); the fair value is what the company's own numbers justify ($1.56). For Coya Therapeutics, Inc. Common Stock the two are $3.48 per share apart. That gap is exactly why we show both numbers side by side.
How much is Coya Therapeutics, Inc. Common Stock worth?
The market values Coya Therapeutics, Inc. Common Stock at about $118M (market capitalisation, as of Sep 24, 2026). Per share that is $5.04; our models calculate a fair value of $1.56 per share.
What do the bullish and bearish scenarios say about COYA?
Our models span a range for Coya Therapeutics, Inc. Common Stock: cautious scenario $1.03, base $1.56, optimistic $1.95 per share (as of Sep 24, 2026, price $5.04). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Coya Therapeutics, Inc. (COYA)?
Balance-sheet figures for Coya Therapeutics, Inc. Common Stock (as of Sep 24, 2026): return on equity −60.5%. They feed the Quality Score of 38/100, which measures business quality independently of the share price.
How far is COYA from its 52-week high?
Coya Therapeutics, Inc. Common Stock trades at $5.04, about 32% below its 52-week high of $7.36 and 33% above the low of $3.78 (as of Sep 23, 2026). Distance from the high says nothing about value: that is what the fair value of $1.56 is for.
Which stocks are comparable to Coya Therapeutics, Inc. Common Stock?
From the same area (Healthcare) we also value Vertex Pharmaceuticals Incorporated, Regeneron Pharmaceuticals, Inc, argenx SE, Samsung Biologics Co, 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 Coya Therapeutics, Inc. Common Stock stock attractive at the current price?
The data as of Sep 24, 2026: price $5.04, calculated fair value $1.56 (−69%), Quality Score 38/100, 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 COYA calculated?
We run Coya Therapeutics, Inc. Common Stock 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 $1.56, 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 13.0 % above its aggregate fair value. Coya Therapeutics, Inc. Common Stock 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 Coya Therapeutics, Inc. (COYA)?
The closing price on Sep 23, 2026 was $5.04. Our model-based fair value is $1.56, about −69% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Coya Therapeutics, Inc. Common Stock right now?
The price sits above even our optimistic bull case ($1.95). The favourable scenario is already priced in. Weak quality (38/100) 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 ($1.03 to $1.95) leaves room in how you read the outcome.

Key figures of Coya Therapeutics, Inc. Common Stock

How large is the market capitalisation of Coya Therapeutics, Inc. (COYA)?
The market capitalisation of Coya Therapeutics, Inc. Common Stock is $118M. 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 is the P/S ratio of Coya Therapeutics, Inc. (COYA)?
The price-to-sales ratio of Coya Therapeutics, Inc. Common Stock is 13.6 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of Coya Therapeutics, Inc. (COYA)?
Earnings per share at Coya Therapeutics, Inc. Common Stock are $−1.07. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Coya Therapeutics, Inc. (COYA)?
The net margin of Coya Therapeutics, Inc. Common Stock is −270% (last twelve months). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of Coya Therapeutics, Inc. (COYA)?
The return on equity (ROE) of Coya Therapeutics, Inc. Common Stock is −60.5% (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 Coya Therapeutics, Inc. (COYA)?
On an EBIT basis the return on assets of Coya Therapeutics, Inc. Common Stock is −63.4% (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 Coya Therapeutics, Inc. (COYA)?
The operating margin of Coya Therapeutics, Inc. Common Stock is −2,890% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Coya Therapeutics, Inc. (COYA)?
Revenue at Coya Therapeutics, Inc. Common Stock is growing +49.0% versus a year earlier. 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 Coya Therapeutics, Inc. (COYA) generate?
The free cash flow of Coya Therapeutics, Inc. Common Stock is −$10.7M (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 Coya Therapeutics, Inc. (COYA) hold?
Coya Therapeutics, Inc. Common Stock holds more cash than debt, $46.8M net (fiscal year 2025). The company holds more cash than debt, a safety cushion.
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