Comprehensive Stock Comparison
Compare OS Therapies Incorporated (OSTX) vs Exelixis, Inc. (EXEL) 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 | EXEL | Beta 0.63 vs OSTX's 0.81 |
| Dividends | OSTX | 100.0% yield; 1-year raise streak; EXEL pays no meaningful dividend |
| Momentum (1Y) | EXEL | +13.9% vs OSTX's -10.9% |
| Efficiency (ROA) | EXEL | 24.0% ROA vs OSTX's -204.2% |
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
OS Therapies is a clinical-stage biopharmaceutical company developing novel treatments for osteosarcoma and other solid tumors. It aims to generate revenue through future drug sales and potential licensing deals — primarily from its lead candidate OST-HER2 (an off-the-shelf immunotherapy) and its tunable antibody-drug conjugate platform. The company's competitive advantage lies in its specialized focus on osteosarcoma — a rare pediatric cancer with limited treatment options — and its proprietary plug-and-play ADC technology with pH-sensitive linkers.
Exelixis is an oncology-focused biotechnology company that discovers, develops, and commercializes targeted cancer therapies. It generates revenue primarily from sales of its flagship drug Cabometyx — which accounts for the vast majority of its revenue — along with royalties from partnered products like Cotellic. The company's competitive advantage lies in its deep expertise in tyrosine kinase inhibitors and its focused pipeline targeting difficult-to-treat cancers.
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
EXEL leads in 4 of 6 categories — strongest in Financial Metrics and Profitability & Efficiency. 1 category is tied.
Financial Metrics (TTM)
EXEL and OSTX operate at a comparable scale, with $2.3B and $0 in trailing revenue.
| Metric | OSTXOS Therapies Inco… | EXELExelixis, Inc. |
|---|---|---|
| RevenueTrailing 12 months | $0 | $2.3B |
| EBITDAEarnings before interest/tax | -$19M | $830M |
| Net IncomeAfter-tax profit | -$18M | $678M |
| Free Cash FlowCash after capex | -$13M | $753M |
| Gross MarginGross profit ÷ Revenue | — | +96.6% |
| Operating MarginEBIT ÷ Revenue | — | +35.0% |
| Net MarginNet income ÷ Revenue | — | +29.6% |
| FCF MarginFCF ÷ Revenue | — | +32.9% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | +10.8% |
| EPS Growth (YoY)Latest quarter vs prior year | -16.7% | +75.0% |
Valuation Metrics
| Metric | OSTXOS Therapies Inco… | EXELExelixis, Inc. |
|---|---|---|
| Market CapShares × price | $49M | $11.8B |
| Enterprise ValueMkt cap + debt − cash | $43M | $11.5B |
| Trailing P/EPrice ÷ TTM EPS | -2.83x | 15.85x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 13.29x |
| PEG RatioP/E ÷ EPS growth rate | — | 0.31x |
| EV / EBITDAEnterprise value multiple | — | 13.19x |
| Price / SalesMarket cap ÷ Revenue | — | 5.09x |
| Price / BookPrice ÷ Book value/share | 37.81x | 5.75x |
| Price / FCFMarket cap ÷ FCF | — | 13.36x |
Profitability & Efficiency
EXEL delivers a 31.4% return on equity — every $100 of shareholder capital generates $31 in annual profit, vs $-4 for OSTX. On the Piotroski fundamental quality scale (0–9), EXEL scores 7/9 vs OSTX's 3/9, reflecting strong financial health.
| Metric | OSTXOS Therapies Inco… | EXELExelixis, Inc. |
|---|---|---|
| ROE (TTM)Return on equity | -3.9% | +31.4% |
| ROA (TTM)Return on assets | -2.0% | +24.0% |
| ROICReturn on invested capital | — | +32.1% |
| ROCEReturn on capital employed | -7.5% | +35.0% |
| Piotroski ScoreFundamental quality 0–9 | 3 | 7 |
| Debt / EquityFinancial leverage | — | 0.08x |
| Net DebtTotal debt minus cash | -$6M | -$309M |
| Cash & Equiv.Liquid assets | $6M | $482M |
| Total DebtShort + long-term debt | $0 | $173M |
| Interest CoverageEBIT ÷ Interest expense | -2418.83x | — |
Total Returns (with DRIP)
A $10,000 investment in EXEL five years ago would be worth $19,758 today (with dividends reinvested), compared to $5,857 for OSTX. Over the past 12 months, EXEL leads with a +13.9% total return vs OSTX's -10.9%. The 3-year compound annual growth rate (CAGR) favors EXEL at 37.1% vs OSTX's -16.3% — a key indicator of consistent wealth creation.
| Metric | OSTXOS Therapies Inco… | EXELExelixis, Inc. |
|---|---|---|
| YTD ReturnYear-to-date | +9.7% | +1.1% |
| 1-Year ReturnPast 12 months | -10.9% | +13.9% |
| 3-Year ReturnCumulative with dividends | -41.4% | +158.0% |
| 5-Year ReturnCumulative with dividends | -41.4% | +97.6% |
| 10-Year ReturnCumulative with dividends | -41.4% | +1110.4% |
| CAGR (3Y)Annualised 3-year return | -16.3% | +37.1% |
Risk & Volatility
EXEL is the less volatile stock with a 0.63 beta — it tends to amplify market swings less than OSTX's 0.81 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. EXEL currently trades 88.8% from its 52-week high vs OSTX's 57.2% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | OSTXOS Therapies Inco… | EXELExelixis, Inc. |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.81x | 0.63x |
| 52-Week HighHighest price in past year | $2.57 | $49.62 |
| 52-Week LowLowest price in past year | $1.12 | $32.38 |
| % of 52W HighCurrent price vs 52-week peak | +57.2% | +88.8% |
| RSI (14)Momentum oscillator 0–100 | 57.9 | 53.1 |
| Avg Volume (50D)Average daily shares traded | 510K | 2.1M |
Analyst Outlook
OSTX is the only dividend payer here at 100.00% yield — a key consideration for income-focused portfolios.
| Metric | OSTXOS Therapies Inco… | EXELExelixis, Inc. |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Buy |
| Price TargetConsensus 12-month target | — | $44.40 |
| # AnalystsCovering analysts | — | 32 |
| Dividend YieldAnnual dividend ÷ price | +100.0% | — |
| Dividend StreakConsecutive years of raises | 1 | — |
| Dividend / ShareAnnual DPS | $1.50 | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | +8.0% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Aug 24 | Feb 26 | Change |
|---|---|---|---|
| OS Therapies Incorp… (OSTX) | 100 | 55.38 | -44.6% |
| Exelixis, Inc. (EXEL) | 100 | 176.75 | +76.8% |
Exelixis, Inc. (EXEL) returned +98% over 5 years vs OS Therapies Incorp… (OSTX)'s -41%. A $10,000 investment in EXEL 5 years ago would be worth $19,758 today (including dividends reinvested).
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| OS Therapies Incorp… (OSTX) | $0.00 | $0.00 | — |
| Exelixis, Inc. (EXEL) | $191M | $2.3B | +1111.8% |
Exelixis, Inc.'s revenue grew from $191M (2016) to $2.3B (2025) — a 31.9% CAGR.
Chart 3P/E Ratio History — 9 Years
| Stock | 2017 | 2025 | Change |
|---|---|---|---|
| Exelixis, Inc. (EXEL) | 62 | 15.8 | -74.5% |
Exelixis, Inc. has traded in a 9x–62x P/E range over 9 years; current trailing P/E is ~16x.
Chart 4EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| OS Therapies Incorp… (OSTX) | -0 | -0.52 | -74185.7% |
| Exelixis, Inc. (EXEL) | -0.28 | 2.78 | +1092.9% |
Exelixis, Inc.'s EPS grew from $-0.28 (2016) to $2.78 (2025).
Chart 5Free Cash Flow — 5 Years
OS Therapies Incorporated generated $-7M FCF in 2024 (-65% vs 2021). Exelixis, Inc. generated $884M FCF in 2025 (+163% vs 2021).
OSTX vs EXEL: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is OSTX or EXEL a better buy right now?
Exelixis, Inc. (EXEL) offers the better valuation at 15.8x trailing P/E (13.3x forward), making it the more compelling value choice. Analysts rate Exelixis, Inc. (EXEL) a "Buy" — based on 32 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 — OSTX or EXEL?
Over the past 5 years, Exelixis, Inc. (EXEL) delivered a total return of +97.6%, compared to -41.4% for OS Therapies Incorporated (OSTX). A $10,000 investment in EXEL five years ago would be worth approximately $20K today (assuming dividends reinvested). Over 10 years, the gap is even starker: EXEL returned +1110% versus OSTX's -41.4%. 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 — OSTX or EXEL?
By beta (market sensitivity over 5 years), Exelixis, Inc. (EXEL) is the lower-risk stock at 0.63β versus OS Therapies Incorporated's 0.81β — meaning OSTX is approximately 29% more volatile than EXEL relative to the S&P 500.
04Which has better profit margins — OSTX or EXEL?
Exelixis, Inc. (EXEL) is the more profitable company, earning 33.7% net margin versus 0.0% for OS Therapies Incorporated — meaning it keeps 33.7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: EXEL leads at 37.6% versus 0.0% for OSTX. At the gross margin level — before operating expenses — EXEL leads at 96.6%, 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 — OSTX or EXEL?
In this comparison, OSTX (100.0% yield) pays a dividend. EXEL does not pay a meaningful dividend and should not be held primarily for income.
06Is OSTX or EXEL better for a retirement portfolio?
For long-horizon retirement investors, Exelixis, Inc. (EXEL) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.63), +1110% 10Y return). Both have compounded well over 10 years (EXEL: +1110%, OSTX: -41.4%), 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 OSTX and EXEL?
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: OSTX is a small-cap income-oriented stock; EXEL is a mid-cap deep-value stock. OSTX pays a dividend while EXEL 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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