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Actinium Pharmaceuticals

ATNM
55
Biotechnology · Healthcare
Price
$1.05
+0.05 (+5.00%)
pre-market:$1.09+3.48%
Market Cap
$32.9M
Exchange
New York Stock Exchange Arca
Winston Score
55
Winston is curious
A decent business — some strong pillars, some weaker.
Data as of Sep 4, 2026 · filings through Jun 30, 2026
How the score breaks down
Quality
Exceptional
Growth
Mixed
Cash Flow
Weak
Stability
Good
Valuation
Good

Share count rising — dilution

+51.7% over 4y

The company has issued more shares over this period, which dilutes each existing shareholder’s stake.

Diluted shares outstanding: 20.6M (2021) → 31.2M (2025)

Winston Score History

The full picture

Actinium Pharmaceuticals is a clinical-stage biotechnology company that develops targeted radiation therapies to treat blood cancers like leukemia and lymphoma. The company uses a technology called antibody-radiation conjugates, which attach radioactive atoms to antibodies that seek out cancer cells, delivering radiation directly to tumors while trying to spare healthy tissue. Its lead program, Iomab-B, is designed to prepare patients for bone marrow transplants.

Actinium generates minimal product revenue as it is still in the clinical development stage, relying primarily on fundraising through stock offerings and grants to fund operations. The company is based in New York and operates mainly in the United States. Its potential competitive advantage lies in its specialized expertise combining nuclear medicine with antibody targeting. The key growth driver is FDA approval of Iomab-B, but as a small pre-revenue biotech, the company faces significant risks including clinical trial outcomes, regulatory hurdles, and the ongoing need to raise capital to continue operations.

Score breakdown

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Quality

Profit per sale
Gross Margin
100.0%
Premium pricing power — 100.0% gross margin
Profit after running costs
Operating Margin
78.8%
Excellent — 78.8% operating margin
Return on the money invested
ROCE
31.5%
Exceptional — 31.5% return on capital

ROIC above 25%. Every dollar invested in the business earns more than 25 cents back per year.

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Growth

Sales growth
Sales YoY
N/A
Data not available
Profit growth
EPS YoY
N/A
Data not available
How steady the profit is
EPS Consistency
7/8 quarters
Every recent quarter grew earnings vs last year

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Cash Flow

Profit that turns into cash
Cash Conversion
-200%
Weak — only -200% of profit becomes cash
Spare cash per sale
FCF Margin
-66.2%
Burning cash (-66.2%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

What it owes vs what it owns
Debt / Equity
N/A
Data not available
Covers its interest
Interest Cover
100.00x
Comfortably covers interest (100.0x)

Interest coverage above 8. Profits cover interest many times over.

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Valuation

Price vs profit
P/E Ratio (TTM)
2.9x
Attractive valuation — P/E 2.9

P/E under 10. The price tag is small relative to last year's profit.

Cheaper or dearer next year
P/E vs Forward
N/A
not available
Data not available

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Dividends

Not applicable for this business.
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