Comprehensive Stock Comparison
Compare BiomX Inc. (PHGE) vs Regeneron Pharmaceuticals, Inc. (REGN) Stock
Analyze side-by-side fundamentals, valuation, growth, and profitability to decide which stock is the better buy.
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Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Stability / Safety |  REGN | Beta 0.58 vs PHGE's 0.93, lower leverage |
| Dividends | REGN | 0.4% yield; 1-year raise streak; PHGE pays no meaningful dividend |
| Momentum (1Y) | REGN | +15.1% vs PHGE's -48.8% |
| Efficiency (ROA) | REGN | 11.1% ROA vs PHGE's -142.8%, ROIC 12.4% vs -305.2% |
Who Each Stock Is For
Income & stability
REGNDividend streak 1 yrs, beta 0.58, yield 0.4%
Growth exposure
PHGEEPS growth 71.2%
Long-term compounding (10Y)
REGN94.0% 10Y total return vs PHGE's -99.7%
Sleep-well-at-night portfolio
REGNLower volatility, beta 0.58, Low D/E 8.7%, current ratio 4.77x
Defensive / Recession hedge
REGNBeta 0.58, yield 0.4%, current ratio 4.77x
Business Model
What each company does and how it makes money
BiomX is a clinical-stage biotechnology company developing targeted phage therapies — viruses that kill specific harmful bacteria — for chronic diseases and skin conditions. It generates no commercial revenue yet but is funded through equity offerings and partnerships to advance its pipeline, which includes therapies for cystic fibrosis, inflammatory bowel diseases, and atopic dermatitis. The company's key advantage is its proprietary platform for discovering and engineering natural phages that precisely target disease-causing bacteria while sparing beneficial microbes.
Regeneron Pharmaceuticals is a biotechnology company that discovers, develops, and commercializes innovative medicines for serious diseases. It generates revenue primarily from sales of its flagship products — EYLEA for eye diseases (~60% of revenue) and Dupixent for inflammatory conditions (~30%) — with additional income from collaborations and royalties. The company's competitive advantage lies in its proprietary VelocImmune technology platform for creating human antibodies and its deep expertise in genetic research, which enables rapid drug discovery and development.
Revenue Breakdown by Segment
How each company's revenue is distributed across its business units
Segment breakdown not available.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
REGN 4PHGE 0REGN1/1 metricsREGN8/9 metricsREGN5/6 metricsREGN2/2 metricsREGN leads in 4 of 6 categories — strongest in Financial Metrics and Profitability & Efficiency. 1 category is tied.
Financial Metrics (TTM)
REGN and PHGE operate at a comparable scale, with $14.3B and $0 in trailing revenue.
| Metric | PHGEBiomX Inc. | REGNRegeneron Pharmac… |
|---|---|---|
| RevenueTrailing 12 months | $0 | $14.3B |
| EBITDAEarnings before interest/tax | -$6M | $4.2B |
| Net IncomeAfter-tax profit | -$37M | $4.5B |
| Free Cash FlowCash after capex | -$28M | $3.2B |
| Gross MarginGross profit ÷ Revenue | — | +86.3% |
| Operating MarginEBIT ÷ Revenue | — | +25.7% |
| Net MarginNet income ÷ Revenue | — | +31.4% |
| FCF MarginFCF ÷ Revenue | — | +22.0% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | +2.5% |
| EPS Growth (YoY)Latest quarter vs prior year | -6.5% | -2.5% |
Valuation Metrics
| Metric | PHGEBiomX Inc. | REGNRegeneron Pharmac… |
|---|---|---|
| Market CapShares × price | $82.8B | $108.4B |
| Enterprise ValueMkt cap + debt − cash | $82.8B | $92.2B |
| Trailing P/EPrice ÷ TTM EPS | -4.29x | 18.99x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 17.38x |
| PEG RatioP/E ÷ EPS growth rate | — | 3.00x |
| EV / EBITDAEnterprise value multiple | — | 21.83x |
| Price / SalesMarket cap ÷ Revenue | — | 7.55x |
| Price / BookPrice ÷ Book value/share | 3427.64x | 2.74x |
| Price / FCFMarket cap ÷ FCF | — | 26.56x |
Profitability & Efficiency
REGN delivers a 14.4% return on equity — every $100 of shareholder capital generates $14 in annual profit, vs $-4 for PHGE. REGN carries lower financial leverage with a 0.09x debt-to-equity ratio, signaling a more conservative balance sheet compared to PHGE's 0.40x. On the Piotroski fundamental quality scale (0–9), REGN scores 7/9 vs PHGE's 3/9, reflecting strong financial health.
| Metric | PHGEBiomX Inc. | REGNRegeneron Pharmac… |
|---|---|---|
| ROE (TTM)Return on equity | -3.6% | +14.4% |
| ROA (TTM)Return on assets | -142.8% | +11.1% |
| ROICReturn on invested capital | -3.1% | +12.4% |
| ROCEReturn on capital employed | -159.9% | +10.8% |
| Piotroski ScoreFundamental quality 0–9 | 3 | 7 |
| Debt / EquityFinancial leverage | 0.40x | 0.09x |
| Net DebtTotal debt minus cash | -$8M | -$16.2B |
| Cash & Equiv.Liquid assets | $18M | $18.9B |
| Total DebtShort + long-term debt | $10M | $2.7B |
| Interest CoverageEBIT ÷ Interest expense | -36.86x | 120.42x |
Total Returns (with DRIP)
A $10,000 investment in REGN five years ago would be worth $17,161 today (with dividends reinvested), compared to $47 for PHGE. Over the past 12 months, REGN leads with a +15.1% total return vs PHGE's -48.8%. The 3-year compound annual growth rate (CAGR) favors REGN at 0.5% vs PHGE's -59.1% — a key indicator of consistent wealth creation.
| Metric | PHGEBiomX Inc. | REGNRegeneron Pharmac… |
|---|---|---|
| YTD ReturnYear-to-date | +194.4% | +1.6% |
| 1-Year ReturnPast 12 months | -48.8% | +15.1% |
| 3-Year ReturnCumulative with dividends | -93.2% | +1.5% |
| 5-Year ReturnCumulative with dividends | -99.5% | +71.6% |
| 10-Year ReturnCumulative with dividends | -99.7% | +94.0% |
| CAGR (3Y)Annualised 3-year return | -59.1% | +0.5% |
Risk & Volatility
REGN is the less volatile stock with a 0.58 beta — it tends to amplify market swings less than PHGE's 0.93 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. REGN currently trades 95.9% from its 52-week high vs PHGE's 42.8% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | PHGEBiomX Inc. | REGNRegeneron Pharmac… |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.93x | 0.58x |
| 52-Week HighHighest price in past year | $14.71 | $821.11 |
| 52-Week LowLowest price in past year | $1.56 | $476.49 |
| % of 52W HighCurrent price vs 52-week peak | +42.8% | +95.9% |
| RSI (14)Momentum oscillator 0–100 | 51.0 | 47.5 |
| Avg Volume (50D)Average daily shares traded | 1.3M | 762K |
Analyst Outlook
REGN is the only dividend payer here at 0.43% yield — a key consideration for income-focused portfolios.
| Metric | PHGEBiomX Inc. | REGNRegeneron Pharmac… |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Buy |
| Price TargetConsensus 12-month target | — | $857.17 |
| # AnalystsCovering analysts | — | 48 |
| Dividend YieldAnnual dividend ÷ price | — | +0.4% |
| Dividend StreakConsecutive years of raises | — | 1 |
| Dividend / ShareAnnual DPS | — | $3.41 |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | +3.2% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Mar 20 | Mar 26 | Change |
|---|---|---|---|
| BiomX Inc. (PHGE) | 100 | 0.23 | -99.8% |
| Regeneron Pharmaceu… (REGN) | 100 | 161.99 | +62.0% |
Regeneron Pharmaceu… (REGN) returned +72% over 5 years vs BiomX Inc. (PHGE)'s -100%. A $10,000 investment in REGN 5 years ago would be worth $17,161 today (including dividends reinvested).
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| BiomX Inc. (PHGE) | $0.00 | $0.00 | — |
| Regeneron Pharmaceu… (REGN) | $4.9B | $14.3B | +195.1% |
Regeneron Pharmaceuticals, Inc.'s revenue grew from $4.9B (2016) to $14.3B (2025) — a 12.8% CAGR.
Chart 3P/E Ratio History — 9 Years
| Stock | 2017 | 2025 | Change |
|---|---|---|---|
| Regeneron Pharmaceu… (REGN) | 36.4 | 18.6 | -48.9% |
Regeneron Pharmaceuticals, Inc. has traded in a 9x–36x P/E range over 9 years; current trailing P/E is ~19x.
Chart 4EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| BiomX Inc. (PHGE) | -3.27 | -1.47 | +55.0% |
| Regeneron Pharmaceu… (REGN) | 7.7 | 41.48 | +438.7% |
Regeneron Pharmaceuticals, Inc.'s EPS grew from $7.70 (2016) to $41.48 (2025) — a 21% CAGR.
Chart 5Free Cash Flow — 5 Years
BiomX Inc. generated $-37M FCF in 2024 (-18% vs 2021). Regeneron Pharmaceuticals, Inc. generated $4B FCF in 2025 (-38% vs 2021).
PHGE vs REGN: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is PHGE or REGN a better buy right now?
Regeneron Pharmaceuticals, Inc. (REGN) offers the better valuation at 19.0x trailing P/E (17.4x forward), making it the more compelling value choice. Analysts rate Regeneron Pharmaceuticals, Inc. (REGN) a "Buy" — based on 48 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.
02Which is the better long-term investment — PHGE or REGN?
Over the past 5 years, Regeneron Pharmaceuticals, Inc. (REGN) delivered a total return of +71.6%, compared to -99.5% for BiomX Inc. (PHGE). A $10,000 investment in REGN five years ago would be worth approximately $17K today (assuming dividends reinvested). Over 10 years, the gap is even starker: REGN returned +94.0% versus PHGE's -99.7%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
03Which is safer — PHGE or REGN?
By beta (market sensitivity over 5 years), Regeneron Pharmaceuticals, Inc. (REGN) is the lower-risk stock at 0.58β versus BiomX Inc.'s 0.93β — meaning PHGE is approximately 60% more volatile than REGN relative to the S&P 500. On balance sheet safety, Regeneron Pharmaceuticals, Inc. (REGN) carries a lower debt/equity ratio of 9% versus 40% for BiomX Inc. — giving it more financial flexibility in a downturn.
04Which has better profit margins — PHGE or REGN?
Regeneron Pharmaceuticals, Inc. (REGN) is the more profitable company, earning 31.4% net margin versus 0.0% for BiomX Inc. — meaning it keeps 31.4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: REGN leads at 25.7% versus 0.0% for PHGE. At the gross margin level — before operating expenses — REGN leads at 86.3%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.
05Which pays a better dividend — PHGE or REGN?
In this comparison, REGN (0.4% yield) pays a dividend. PHGE does not pay a meaningful dividend and should not be held primarily for income.
06Is PHGE or REGN better for a retirement portfolio?
For long-horizon retirement investors, Regeneron Pharmaceuticals, Inc. (REGN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.58)). Both have compounded well over 10 years (REGN: +94.0%, PHGE: -99.7%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.
07What are the main differences between PHGE and REGN?
Both stocks operate in the Healthcare sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.
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