Comprehensive Stock Comparison
Compare CASI Pharmaceuticals, Inc. (CASI) 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 |
|---|---|---|
| Growth | REGN | 1.0% revenue growth vs CASI's -15.8% |
| Quality / Margins | REGN | 31.4% net margin vs CASI's -183.9% |
| Stability / Safety | CASI | Beta 0.46 vs REGN's 0.58 |
| Dividends | CASI | 22.6% yield, vs REGN's 0.4% |
| Momentum (1Y) | REGN | +12.4% vs CASI's -90.8% |
| Efficiency (ROA) | REGN | 11.1% ROA vs CASI's -201.9%, ROIC 12.4% vs -153.0% |
Who Each Stock Is For
Income & stability
Growth exposure
Long-term compounding (10Y)
Sleep-well-at-night portfolio
Defensive / Recession hedge
Business Model
What each company does and how it makes money
CASI Pharmaceuticals is a biopharmaceutical company that develops and commercializes oncology therapeutics primarily in China. It generates revenue from sales of its approved drug EVOMELA for multiple myeloma treatment and through licensing partnerships for its pipeline of CAR-T therapies and other investigational cancer drugs. The company's key advantage lies in its strategic focus on the Chinese oncology market and its pipeline of novel immunotherapies targeting hematological cancers.
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
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
REGN leads in 3 of 6 categories (Financial Metrics, Profitability & Efficiency). CASI leads in 1 (Valuation Metrics). 2 tied.
Financial Metrics (TTM)
REGN is the larger business by revenue, generating $14.3B annually — 534.3x CASI's $27M. REGN is the more profitable business, keeping 31.4% of every revenue dollar as net income compared to CASI's -183.9%. On growth, REGN holds the edge at +2.5% YoY revenue growth, suggesting stronger near-term business momentum.
| Metric | CASICASI Pharmaceutic… | REGNRegeneron Pharmac… |
|---|---|---|
| RevenueTrailing 12 months | $27M | $14.3B |
| EBITDAEarnings before interest/tax | -$44M | $4.2B |
| Net IncomeAfter-tax profit | -$49M | $4.5B |
| Free Cash FlowCash after capex | $0 | $3.2B |
| Gross MarginGross profit ÷ Revenue | +35.8% | +86.3% |
| Operating MarginEBIT ÷ Revenue | -168.0% | +25.7% |
| Net MarginNet income ÷ Revenue | -183.9% | +31.4% |
| FCF MarginFCF ÷ Revenue | -103.2% | +22.0% |
| Rev. Growth (YoY)Latest quarter vs prior year | -60.5% | +2.5% |
| EPS Growth (YoY)Latest quarter vs prior year | -23.6% | -2.5% |
Valuation Metrics
| Metric | CASICASI Pharmaceutic… | REGNRegeneron Pharmac… |
|---|---|---|
| Market CapShares × price | $3M | $107.6B |
| Enterprise ValueMkt cap + debt − cash | $12M | $91.4B |
| Trailing P/EPrice ÷ TTM EPS | -0.08x | 18.84x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 17.25x |
| PEG RatioP/E ÷ EPS growth rate | — | 2.98x |
| EV / EBITDAEnterprise value multiple | — | 21.64x |
| Price / SalesMarket cap ÷ Revenue | 0.11x | 7.50x |
| Price / BookPrice ÷ Book value/share | 1.72x | 2.72x |
| Price / FCFMarket cap ÷ FCF | — | 26.36x |
Profitability & Efficiency
REGN delivers a 14.4% return on equity — every $100 of shareholder capital generates $14 in annual profit, vs $-3 for CASI. REGN carries lower financial leverage with a 0.09x debt-to-equity ratio, signaling a more conservative balance sheet compared to CASI's 11.96x. On the Piotroski fundamental quality scale (0–9), REGN scores 7/9 vs CASI's 2/9, reflecting strong financial health.
| Metric | CASICASI Pharmaceutic… | REGNRegeneron Pharmac… |
|---|---|---|
| ROE (TTM)Return on equity | -3.0% | +14.4% |
| ROA (TTM)Return on assets | -2.0% | +11.1% |
| ROICReturn on invested capital | -153.0% | +12.4% |
| ROCEReturn on capital employed | -104.6% | +10.8% |
| Piotroski ScoreFundamental quality 0–9 | 2 | 7 |
| Debt / EquityFinancial leverage | 11.96x | 0.09x |
| Net DebtTotal debt minus cash | $9M | -$16.2B |
| Cash & Equiv.Liquid assets | $13M | $18.9B |
| Total DebtShort + long-term debt | $22M | $2.7B |
| Interest CoverageEBIT ÷ Interest expense | -66.88x | 120.42x |
Total Returns (with DRIP)
A $10,000 investment in REGN five years ago would be worth $16,977 today (with dividends reinvested), compared to $82 for CASI. Over the past 12 months, REGN leads with a +12.4% total return vs CASI's -90.8%. The 3-year compound annual growth rate (CAGR) favors REGN at 1.1% vs CASI's -52.4% — a key indicator of consistent wealth creation.
| Metric | CASICASI Pharmaceutic… | REGNRegeneron Pharmac… |
|---|---|---|
| YTD ReturnYear-to-date | -74.7% | +0.8% |
| 1-Year ReturnPast 12 months | -90.8% | +12.4% |
| 3-Year ReturnCumulative with dividends | -89.2% | +3.4% |
| 5-Year ReturnCumulative with dividends | -99.2% | +69.8% |
| 10-Year ReturnCumulative with dividends | -97.4% | +104.7% |
| CAGR (3Y)Annualised 3-year return | -52.4% | +1.1% |
Risk & Volatility
CASI is the less volatile stock with a 0.46 beta — it tends to amplify market swings less than REGN's 0.58 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. REGN currently trades 95.2% from its 52-week high vs CASI's 6.7% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | CASICASI Pharmaceutic… | REGNRegeneron Pharmac… |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.46x | 0.58x |
| 52-Week HighHighest price in past year | $3.09 | $821.11 |
| 52-Week LowLowest price in past year | $0.21 | $476.49 |
| % of 52W HighCurrent price vs 52-week peak | +6.7% | +95.2% |
| RSI (14)Momentum oscillator 0–100 | 41.9 | 49.1 |
| Avg Volume (50D)Average daily shares traded | 34K | 687K |
Analyst Outlook
For income investors, CASI offers the higher dividend yield at 22.56% vs REGN's 0.44%.
| Metric | CASICASI Pharmaceutic… | REGNRegeneron Pharmac… |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Buy |
| Price TargetConsensus 12-month target | — | $857.17 |
| # AnalystsCovering analysts | — | 48 |
| Dividend YieldAnnual dividend ÷ price | +22.6% | +0.4% |
| Dividend StreakConsecutive years of raises | 0 | 1 |
| Dividend / ShareAnnual DPS | $0.05 | $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 | Feb 26 | Change |
|---|---|---|---|
| CASI Pharmaceutical… (CASI) | 100 | 5.53 | -94.5% |
| Regeneron Pharmaceu… (REGN) | 100 | 162.46 | +62.5% |
Regeneron Pharmaceu… (REGN) returned +70% over 5 years vs CASI Pharmaceutical… (CASI)'s -99%. A $10,000 investment in REGN 5 years ago would be worth $16,977 today (including dividends reinvested).
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| CASI Pharmaceutical… (CASI) | $0.00 | $29M | — |
| 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 3Net Margin Trend — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| CASI Pharmaceutical… (CASI) | -11.0% | -137.6% | -1152.8% |
| Regeneron Pharmaceu… (REGN) | 18.4% | 31.4% | +70.5% |
Regeneron Pharmaceuticals, Inc.'s net margin went from 18% (2016) to 31% (2025).
Chart 4P/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 5EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| CASI Pharmaceutical… (CASI) | -1.69 | -2.56 | -51.5% |
| 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 6Free Cash Flow — 5 Years
CASI Pharmaceuticals, Inc. generated $-29M FCF in 2024 (+30% vs 2021). Regeneron Pharmaceuticals, Inc. generated $4B FCF in 2025 (-38% vs 2021).
CASI vs REGN: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is CASI or REGN a better buy right now?
Regeneron Pharmaceuticals, Inc. (REGN) offers the better valuation at 18.8x trailing P/E (17.3x 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 — CASI or REGN?
Over the past 5 years, Regeneron Pharmaceuticals, Inc. (REGN) delivered a total return of +69.8%, compared to -99.2% for CASI Pharmaceuticals, Inc. (CASI). 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 +104.7% versus CASI's -97.4%. 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 — CASI or REGN?
By beta (market sensitivity over 5 years), CASI Pharmaceuticals, Inc. (CASI) is the lower-risk stock at 0.46β versus Regeneron Pharmaceuticals, Inc.'s 0.58β — meaning REGN is approximately 26% more volatile than CASI relative to the S&P 500. On balance sheet safety, Regeneron Pharmaceuticals, Inc. (REGN) carries a lower debt/equity ratio of 9% versus 12% for CASI Pharmaceuticals, Inc. — giving it more financial flexibility in a downturn.
04Which has better profit margins — CASI or REGN?
Regeneron Pharmaceuticals, Inc. (REGN) is the more profitable company, earning 31.4% net margin versus -137.6% for CASI Pharmaceuticals, 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 -138.8% for CASI. 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 — CASI or REGN?
All stocks in this comparison pay dividends. CASI Pharmaceuticals, Inc. (CASI) offers the highest yield at 22.6%, versus 0.4% for Regeneron Pharmaceuticals, Inc. (REGN).
06Is CASI or REGN better for a retirement portfolio?
For long-horizon retirement investors, CASI Pharmaceuticals, Inc. (CASI) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.46), 22.6% yield). Both have compounded well over 10 years (CASI: -97.4%, REGN: +104.7%), 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 CASI 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. In terms of investment character: CASI is a small-cap income-oriented stock; REGN is a mid-cap quality compounder stock. CASI pays a dividend while REGN does not, making them suitable for different income and tax situations. 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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