Eli Lilly and Company (LLY)vsProthena Corporation plc (PRTA)
LLY
Eli Lilly and Company
$1,131.42
-2.41%
HEALTHCARE · Cap: $948.95B
PRTA
Prothena Corporation plc
$8.79
-4.97%
HEALTHCARE · Cap: $443.43M
Smart Verdict
WallStSmart Research — data-driven comparison
Eli Lilly and Company generates 124596% more annual revenue ($72.25B vs $57.94M). LLY leads profitability with a 35.0% profit margin vs -260.9%. PRTA appears more attractively valued with a PEG of 0.80. LLY earns a higher WallStSmart Score of 78/100 (B+).
LLY
Strong Buy78
out of 100
Grade: B+
PRTA
Buy58
out of 100
Grade: C
Key Strengths & Concerns
Side-by-side fundamental analysis
Key Strengths
Mega-cap, among the largest globally
Every $100 of equity generates 81 in profit
Keeps 35 of every $100 in revenue as profit
Strong operational efficiency at 49.4%
Revenue surging 55.5% year-over-year
Earnings expanding 169.9% YoY
Reasonable price relative to book value
Strong operational efficiency at 50.5%
Revenue surging 1706.0% year-over-year
Conservative balance sheet, low leverage
Growing faster than its price suggests
Areas to Watch
Premium valuation, high expectations priced in
Elevated debt levels
Trading at 32.4x book value
0.0% earnings growth
Smaller company, higher risk/reward
Weak financial health signals
ROE of -48.4% — below average capital efficiency
Comparative Analysis Report
WallStSmart ResearchBull Case : LLY
The strongest argument for LLY centers on Market Cap, Return on Equity, Profit Margin. Profitability is solid with margins at 35.0% and operating margin at 49.4%. Revenue growth of 55.5% demonstrates continued momentum.
Bull Case : PRTA
The strongest argument for PRTA centers on Price/Book, Operating Margin, Revenue Growth. Revenue growth of 1706.0% demonstrates continued momentum. PEG of 0.80 suggests the stock is reasonably priced for its growth.
Bear Case : LLY
The primary concerns for LLY are P/E Ratio, Debt/Equity, Price/Book.
Bear Case : PRTA
The primary concerns for PRTA are EPS Growth, Market Cap, Piotroski F-Score.
Key Dynamics to Monitor
LLY profiles as a growth stock while PRTA is a hypergrowth play — different risk/reward profiles.
LLY carries more volatility with a beta of 0.48 — expect wider price swings.
PRTA is growing revenue faster at 1706.0% — sustainability is the question.
LLY generates stronger free cash flow (3.0B), providing more financial flexibility.
Bottom Line
LLY scores higher overall (78/100 vs 58/100), backed by strong 35.0% margins and 55.5% revenue growth. Both earn "Strong Buy" and "Buy" ratings respectively — the choice depends on your investment horizon and risk tolerance.
This analysis is generated from publicly available financial data. Not financial advice.
Eli Lilly and Company
HEALTHCARE · DRUG MANUFACTURERS - GENERAL · USA
Eli Lilly and Company is an American pharmaceutical company headquartered in Indianapolis, Indiana, with offices in 18 countries. Its products are sold in approximately 125 countries.
Visit Website →Prothena Corporation plc
HEALTHCARE · BIOTECHNOLOGY · USA
Prothena Corporation plc, an advanced stage clinical company, is focused on the discovery and development of new therapies for life-threatening diseases in the United States. The company is headquartered in Dublin, Ireland.
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