IOSP vs NEU
As of Sep 20, 2026, Innospec (IOSP) scores 6.3/10 and Newmarket (NEU) 6.9/10 on AlphaStocks' five-model composite, so NEU scores higher. IOSP trades 3% below its model fair value; NEU trades 12% below its model fair value.
IOSP
INNOSPEC INC.
6.3
Consider Buy
$93.12
NEU
NEWMARKET CORP
6.9
Consider Buy
$892.21
IOSP vs NEU: Which is the Better Investment?
INNOSPEC INC. (IOSP) scores 6.3/10 while NEWMARKET CORP (NEU) scores 6.9/10 on AlphaStocks' composite model. NEWMARKET CORP has the higher composite rating of Consider Buy. On a P/E basis, INNOSPEC INC. trades at 20.0x, making it the more attractively priced of the two. NEWMARKET CORP trades further below its estimated fair value.
This comparison is algorithmically generated and is not financial advice.
| Metric | IOSP | NEU |
|---|---|---|
| Scores & Fundamentals | ||
| Composite Score | 6.3/10 | 6.9/10▲ |
| Rating | Consider Buy | Consider Buy▲ |
| Price | $93.12 | $892.21 |
| P/E Ratio | 20.0▲ | 20.0 |
| ROE | 8.9% | 24.1%▲ |
| Market Cap | $2B | $8B |
| Fair Value | $96.11 | $1,019.20 |
| Dividend Yield | 2.1%▲ | 1.5% |
| Sector Rank | #8 of 78 | #4 of 78▲ |
| Model Verdicts | ||
| Piotroski | Attractive | Attractive |
| Buffett | Neutral | Attractive▲ |
| Graham | Neutral | Neutral |
| Lynch | Attractive | Attractive |
| Greenblatt | Limited Data | Attractive▲ |
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IOSP vs NEU: Which Stock Scores Higher?
INNOSPEC INC. (IOSP) and NEWMARKET CORP (NEU) are both in the Materials sector. NEU currently leads with a composite score of 6.9/10 (Consider Buy) compared to IOSP's 6.3/10 (Consider Buy).
The AlphaStocks composite score evaluates each stock across four dimensions: Quality (business strength measured by Piotroski F-Score and Buffett quality criteria), Value (discount to intrinsic worth using Graham, Lynch, and Greenblatt models), Momentum (6-month price trend), and Timing (a confirmation signal that requires both value and momentum to align). A higher composite score indicates stronger overall fundamentals combined with favorable market conditions.
This comparison uses the same scoring framework for both companies, ensuring an apples-to-apples evaluation. Scores are recalculated daily after market close using data from SEC filings and market prices. Read the full methodology to understand how each model contributes to the composite score.
Scores are algorithm-generated research tools, not investment recommendations. Past performance does not guarantee future results. Always do your own due diligence. Full disclaimer