Comprehensive Stock Comparison
Compare Synlogic, Inc. (SYBX) vs Armata Pharmaceuticals, Inc. (ARMP) 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 |
|---|---|---|
| Growth |  ARMP | 14.2% revenue growth vs SYBX's -99.8% |
| Quality / Margins | ARMP | -9.3% net margin vs SYBX's -2.9K% |
| Stability / Safety | ARMP | Beta 0.21 vs SYBX's 0.97 |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | ARMP | +474.8% vs SYBX's -53.1% |
| Efficiency (ROA) |  SYBX | -19.5% ROA vs ARMP's -52.4%, ROIC -205.7% vs -44.2% |
Who Each Stock Is For
Income & stability
ARMPDividend streak 0 yrs, beta 0.21
Growth exposure
ARMPRev growth 14.2%, EPS growth 72.6%, 3Y rev CAGR 5.0%
Long-term compounding (10Y)
ARMP-98.0% 10Y total return vs SYBX's -98.0%
Sleep-well-at-night portfolio
ARMPLower volatility, beta 0.21, current ratio 0.23x
Defensive / Recession hedge
ARMPBeta 0.21, current ratio 0.23x
Business Model
What each company does and how it makes money
Synlogic is a clinical-stage biopharmaceutical company developing synthetic biotic medicines — engineered probiotics — to treat metabolic and immunological diseases. It generates revenue primarily through research collaborations and milestone payments from partners like Roche, with potential future income from drug sales if its pipeline succeeds. The company's key advantage lies in its proprietary platform for engineering bacterial strains to perform therapeutic functions in the gut — a novel approach distinct from traditional small molecules or biologics.
Armata Pharmaceuticals is a clinical-stage biotech company developing targeted bacteriophage therapies to treat antibiotic-resistant bacterial infections. It generates revenue primarily through research collaborations and partnerships — like its Merck deal — while advancing its pipeline of phage-based candidates through clinical trials. The company's key advantage is its proprietary bacteriophage platform technology, which offers a novel approach to targeting specific drug-resistant pathogens.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
ARMP 4SYBX 1ARMP3/4 metricsARMP2/2 metricsSYBX3/5 metricsARMP6/6 metricsARMP2/2 metricsARMP leads in 4 of 6 categories (Financial Metrics, Valuation Metrics). SYBX leads in 1 (Profitability & Efficiency).
Financial Metrics (TTM)
ARMP and SYBX operate at a comparable scale, with $5M and $0 in trailing revenue. ARMP is the more profitable business, keeping -9.3% of every revenue dollar as net income compared to SYBX's -2919.9%.
| Metric | SYBXSynlogic, Inc. | ARMPArmata Pharmaceut… |
|---|---|---|
| RevenueTrailing 12 months | $0 | $5M |
| EBITDAEarnings before interest/tax | -$3M | -$32M |
| Net IncomeAfter-tax profit | -$3M | -$47M |
| Free Cash FlowCash after capex | -$4M | -$27M |
| Gross MarginGross profit ÷ Revenue | +100.0% | +70.5% |
| Operating MarginEBIT ÷ Revenue | -5118.8% | -6.6% |
| Net MarginNet income ÷ Revenue | -2919.9% | -9.3% |
| FCF MarginFCF ÷ Revenue | -3959.0% | -5.4% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | -61.0% |
| EPS Growth (YoY)Latest quarter vs prior year | — | -3.9% |
Valuation Metrics
| Metric | SYBXSynlogic, Inc. | ARMPArmata Pharmaceut… |
|---|---|---|
| Market CapShares × price | $7M | $420M |
| Enterprise ValueMkt cap + debt − cash | -$12M | $537M |
| Trailing P/EPrice ÷ TTM EPS | -0.31x | -22.19x |
| Forward P/EPrice ÷ next-FY EPS est. | — | — |
| PEG RatioP/E ÷ EPS growth rate | — | — |
| EV / EBITDAEnterprise value multiple | — | — |
| Price / SalesMarket cap ÷ Revenue | 877.42x | 81.14x |
| Price / BookPrice ÷ Book value/share | 0.57x | — |
| Price / FCFMarket cap ÷ FCF | — | — |
Profitability & Efficiency
| Metric | SYBXSynlogic, Inc. | ARMPArmata Pharmaceut… |
|---|---|---|
| ROE (TTM)Return on equity | -31.3% | — |
| ROA (TTM)Return on assets | -19.5% | -52.4% |
| ROICReturn on invested capital | -2.1% | -44.2% |
| ROCEReturn on capital employed | -120.6% | -70.7% |
| Piotroski ScoreFundamental quality 0–9 | 2 | 2 |
| Debt / EquityFinancial leverage | — | — |
| Net DebtTotal debt minus cash | -$19M | $117M |
| Cash & Equiv.Liquid assets | $19M | $9M |
| Total DebtShort + long-term debt | $0 | $127M |
| Interest CoverageEBIT ÷ Interest expense | — | -2.12x |
Total Returns (with DRIP)
A $10,000 investment in ARMP five years ago would be worth $25,857 today (with dividends reinvested), compared to $117 for SYBX. Over the past 12 months, ARMP leads with a +474.8% total return vs SYBX's -53.1%. The 3-year compound annual growth rate (CAGR) favors ARMP at 56.0% vs SYBX's -60.9% — a key indicator of consistent wealth creation.
| Metric | SYBXSynlogic, Inc. | ARMPArmata Pharmaceut… |
|---|---|---|
| YTD ReturnYear-to-date | -48.7% | +77.0% |
| 1-Year ReturnPast 12 months | -53.1% | +474.8% |
| 3-Year ReturnCumulative with dividends | -94.0% | +279.4% |
| 5-Year ReturnCumulative with dividends | -98.8% | +158.6% |
| 10-Year ReturnCumulative with dividends | -98.0% | -98.0% |
| CAGR (3Y)Annualised 3-year return | -60.9% | +56.0% |
Risk & Volatility
ARMP is the less volatile stock with a 0.21 beta — it tends to amplify market swings less than SYBX's 0.97 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. ARMP currently trades 71.1% from its 52-week high vs SYBX's 30.6% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | SYBXSynlogic, Inc. | ARMPArmata Pharmaceut… |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.97x | 0.21x |
| 52-Week HighHighest price in past year | $1.96 | $16.34 |
| 52-Week LowLowest price in past year | $0.54 | $0.90 |
| % of 52W HighCurrent price vs 52-week peak | +30.6% | +71.1% |
| RSI (14)Momentum oscillator 0–100 | 34.3 | 71.9 |
| Avg Volume (50D)Average daily shares traded | 115K | 50K |
Analyst Outlook
| Metric | SYBXSynlogic, Inc. | ARMPArmata Pharmaceut… |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Buy |
| Price TargetConsensus 12-month target | — | $9.00 |
| # AnalystsCovering analysts | — | 4 |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | 0 |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | 0.0% |
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 |
|---|---|---|---|
| Synlogic, Inc. (SYBX) | 100 | 2.01 | -98.0% |
| Armata Pharmaceutic… (ARMP) | 100 | 303.72 | +203.7% |
Armata Pharmaceutic… (ARMP) returned +159% over 5 years vs Synlogic, Inc. (SYBX)'s -99%. A $10,000 investment in ARMP 5 years ago would be worth $25,857 today (including dividends reinvested).
Chart 2Revenue Growth — 10 Years
| Stock | 2015 | 2024 | Change |
|---|---|---|---|
| Synlogic, Inc. (SYBX) | $0.00 | $8000.00 | — |
| Armata Pharmaceutic… (ARMP) | $475000.00 | $5M | +989.3% |
Synlogic, Inc.'s revenue grew from $0M (2015) to $0M (2024) — a 0.0% CAGR. Armata Pharmaceuticals, Inc.'s revenue grew from $0M (2015) to $5M (2024) — a 30.4% CAGR.
Chart 3Net Margin Trend — 10 Years
| Stock | 2015 | 2024 | Change |
|---|---|---|---|
| Synlogic, Inc. (SYBX) | -59.2% | -2919.9% | -4835.4% |
| Armata Pharmaceutic… (ARMP) | -108.6% | -3.7% | +96.6% |
Armata Pharmaceuticals, Inc.'s net margin went from -109% (2015) to -4% (2024).
Chart 4EPS Growth — 10 Years
| Stock | 2015 | 2024 | Change |
|---|---|---|---|
| Synlogic, Inc. (SYBX) | -34.9 | -1.92 | +94.5% |
| Armata Pharmaceutic… (ARMP) | -278.6 | -0.52 | +99.8% |
Synlogic, Inc.'s EPS grew from $-34.90 (2015) to $-1.92 (2024). Armata Pharmaceuticals, Inc.'s EPS grew from $-278.60 (2015) to $-0.52 (2024).
Chart 5Free Cash Flow — 5 Years
Synlogic, Inc. generated $-32M FCF in 2024 (+40% vs 2021). Armata Pharmaceuticals, Inc. generated $-39M FCF in 2024 (-58% vs 2021).
SYBX vs ARMP: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is SYBX or ARMP a better buy right now?
Analysts rate Armata Pharmaceuticals, Inc. (ARMP) a "Buy" — based on 4 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 — SYBX or ARMP?
Over the past 5 years, Armata Pharmaceuticals, Inc. (ARMP) delivered a total return of +158.6%, compared to -98.8% for Synlogic, Inc. (SYBX). A $10,000 investment in ARMP five years ago would be worth approximately $26K today (assuming dividends reinvested). Over 10 years, the gap is even starker: ARMP returned -98.0% versus SYBX's -98.0%. 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 — SYBX or ARMP?
By beta (market sensitivity over 5 years), Armata Pharmaceuticals, Inc. (ARMP) is the lower-risk stock at 0.21β versus Synlogic, Inc.'s 0.97β — meaning SYBX is approximately 358% more volatile than ARMP relative to the S&P 500.
04Which has better profit margins — SYBX or ARMP?
Armata Pharmaceuticals, Inc. (ARMP) is the more profitable company, earning -365.6% net margin versus -2919.9% for Synlogic, Inc. — meaning it keeps -365.6% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ARMP leads at -820.2% versus -5118.8% for SYBX. At the gross margin level — before operating expenses — SYBX leads at 100.0%, 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 — SYBX or ARMP?
None of the stocks in this comparison currently pay a material dividend. All are effectively zero-yield and should be held for capital appreciation rather than income.
06Is SYBX or ARMP better for a retirement portfolio?
For long-horizon retirement investors, Armata Pharmaceuticals, Inc. (ARMP) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.21)). Both have compounded well over 10 years (ARMP: -98.0%, SYBX: -98.0%), 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 SYBX and ARMP?
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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