AnaptysBio Inc (ANAB) fair value: what the stock is really worth
As of Nov 6, 2026: fair value (intrinsic value) of AnaptysBio Inc stock $67.19, price $46.45, upside +44.7%, quality 68 out of 100. Rating: undervalued. Calculated from audited financials with 13 of our 26 valuation models and 37 quality factors, updated daily.
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AnaptysBio Inc
ANAB · USThe stock costs 31% less than our calculation considers fair.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 6, 2026.
How to read this chart
60‑month range $8.25 – $69.81 · fair‑value band $39.57 – $81.64 · the $46.45 price screens below the $67.19 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 6, 2026.
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Company profile
AnaptysBio, Inc., a clinical-stage biotechnology company, focuses in delivering immunology therapeutics for autoimmune and inflammatory diseases in the United States.
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The company's products include Rosnilimab, a selective pathogenic T cell deplete which completed a Phase 2b trial for the treatment of moderate-to-severe rheumatoid arthritis; ANB033, a CD122 antagonist, which is in a Phase 1b trial for celiac disease and eosinophilic esophagitis; ANB101, a BDCA2 modulator antibody which is in Phase 1a trial that specifically targets plasmacytoid dendritic cells and inhibits interferon secretion and modulates antigen presentation; dostarlimab, a PD-1 antagonist for various solid tumor indications; and Imsidolimab, an antibody that inhibits the interleukin-36 receptor, which is in the Phase 3 development for the treatment of generalized pustular psoriasis.
It focuses on developing various antibody programs that are advanced to preclinical and clinical milestones under its collaborations. It has collaborations agreement with GSK and Vanda. The company was formerly known as Anaptys Biosciences, Inc. and changed its name to AnaptysBio, Inc. in July 2006.
AnaptysBio, Inc. was incorporated in 2005 and is based in San Diego, California.
Stock analysis
AnaptysBio Inc (ANAB) currently trades at $46.45, while our model-based Fair Value estimate is $67.19, implying the stock looks roughly 31% undervalued today.
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Valuation
Bull case: the Growth DCF group reads highest at a median of $71.36 per share, and 7 of the 13 models we run sit above the $46.45 price.
Bear case: the Earnings-Based group reads lowest at $22.62, and 6 of the 13 models stay below the price. Data coverage for this calculation is medium.
Scenario range: $39.57 (bear) to $81.64 (bull), the price of $46.45 sits inside 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 68/100 (solid quality), in the Healthcare sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
AnaptysBio Inc reported revenue of $235M in FY2025 versus $63.2M in FY2021, a compound +38.8%/yr. Reported net income was −$13.2M in FY2025.
Key figures
Market cap $1.3B Small · P/S ratio 12.8 · EPS (TTM) $−0.9600 · Net margin −5.6% · Return on equity −115% · Return on assets (EBIT) −14.9% (5-year average) · Operating margin 53.4% · Revenue (TTM) $106M.
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 33% below its 52-week high and 111% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Healthcare peers we cover trades at 10% fair-value upside, at 45%, ANAB screens cheaper than that median.
Fair Value models
All 13 models by family
Quality Score breakdown
It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.
Insider trades
In the last 6 months, one officer or director sold shares worth $249,372 and none bought.
- SaleHollings RentonDirector5,000 shares at $49.87$249,372Oct 1, 202610b5-1 plan
- SaleJohn P. SchmidDirector20,645 shares at $56.11$1.2MMar 30, 2026
- SaleDaniel FagaPresident, CEO, Director4× since Jan 5, 2026: 56,471 shares, avg. $49.67$2.8MMar 27, 2026
- SaleEric J LoumeauCHIEF LEGAL OFFICER6× since Dec 16, 2025: 57,473 shares, avg. $47.75$2.7MFeb 11, 2026
- SaleMagda MarquetDirector11,000 shares at $48.23$530,568Jan 15, 2026
- SaleDennis MulroyCHIEF FINANCIAL OFFICER5× since Dec 16, 2025: 33,511 shares, avg. $46.24$1.5MJan 8, 2026
- SalePaul F. LizzulChief Medical Officer4× since Dec 22, 2025: 11,604 shares, avg. $44.94$521,526Jan 8, 2026
- SaleJ. Anthony WareDirector3,900 shares at $49.58$193,362Dec 23, 2025
Plus 5 other filings such as grants, option exercises or tax withholding. They are not market purchases or sales.
Sales are often planned (taxes, diversification, 10b5-1 plans). Purchases with their own money are seen as the stronger sign. For information only: not part of the quality score or Fair Value.
Source: SEC Form 4, as of Nov 6, 2026. All filings at the SEC ↗
Revenue & earnings trend
Growth Forecast
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Compare AnaptysBio Inc with another stock
Price, fair value, quality and upside side by side.
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 · 558 stocks
Valuation Multiplesvs Biotechnology median · lower = cheaper
Strength profile in five axes (Snowflake)
Context: sector, industry, market
- Is the Health Care sector expensive or cheap?
- P/E, EV/EBITDA and margins by industry (reference tables)
- Price/FCF by industry
- Debt-to-equity by industry
- Piotroski F-Score screener with fair value
- Undervalued stocks: US Stocks
- Valuation of the USA market
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
Similar stocks
10 more Biotechnology stocks, each showing price versus our Fair Value estimate.
| Stock | Price | Fair Value | vs Fair Value | Compare |
|---|---|---|---|---|
| Incyte Corporation INCY | $119.65 | $199.23 | +67% | vs ANAB |
| Regeneron Pharmaceuticals, Inc REGN | $904.35 | $1,275 | +41% | vs ANAB |
| Genmab A/S GMAB | kr 3,527 | kr 3,999 | +13% | vs ANAB |
| Samsung Biologics Co 207940 | 1,516,000 KRW | 1,667,600 KRW | +10% | vs ANAB |
| WuXi Biologics (Cayman) Inc 2269 | HK$47.62 | HK$52.38 | +10% | vs ANAB |
| Vertex Pharmaceuticals Incorporated VRTX | $547.09 | $596.75 | +9% | vs ANAB |
| argenx SE ARGX | $927.21 | $908.40 | −2% | vs ANAB |
| CSL Limited CSL | A$202.04 | A$183.04 | −9% | vs ANAB |
| Celltrion, Inc 068270 | 211,000 KRW | 74,945 KRW | −64% | vs ANAB |
| Royalty Pharma plc RPRX | $67.30 | $19.01 | −72% | vs ANAB |
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