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Stellantis N.V. vs Westlake: Which Stock Looks Stronger in 2026?

Stellantis holds the cleaner structural position, with the lead spread across growth and valuation. Westlake still leads on profitability and stability, which keeps the comparison from looking entirely one-sided. The market setup is currently leaning toward Westlake, which does not confirm the structural lead. That leaves a split case: the structural lead stays with Stellantis, but the market is not currently confirming it.

The comparison is based on similar long-term financial trajectories, not sector labels.

Updated 2026-04-05

The result is anchored in growth, but valuation also reinforces the same direction. Stellantis N.V. leads by 19 points on the overall comparison score.

Trajectory Similarity
0.70
Similar
Peer-set rank: #10
within Stellantis N.V.'s functional peer set

These two companies are linked by measured long-term financial trajectory similarity within the selected peer universe.

A solid similarity means the pair shares a clearly comparable long-term financial profile, even if individual dimensions still differ.

The strongest overlap appears in capital structure and recent revenue growth.

Similarity drivers
capital structurerecent revenue growth
How to read the score
0.85–1.00 · Very similar0.70–0.84 · Similar0.55–0.69 · Moderately similarbelow 0.55 · Loose match
Peer-Relative Score
STLAM.MI
Stellantis N.V.
43
Peer-Score
Signal qualityMedium
vs
WLK
Westlake Corporation
24
Peer-Score
Signal qualityHigh

Scores reflect position relative to comparable companies with similar long-term financial trajectories.

Score differences across key dimensions.

Dimension spread: STLAM.MI vs WLK Profitability 0 14 Stability 11 29 Valuation 88 47 Growth 74 0 STLAM.MI WLK
Gap Ranking
#1 Growth +74
#2 Valuation +41
#3 Stability +18
#4 Profitability +14
Price Setup

Left means cheaper relative valuation. Higher means stronger structure.

Price setup map for STLAM.MI and WLK Stronger + cheaper Stronger + richer Weaker + cheaper Weaker + richer STLAM.MIWLK Relative valuation Structural strength

Stellantis N.V. looks stronger on relative valuation, while the broader price setup remains mixed.

Valuation position uses Forward P/E where available.

Relative Position vs Comparable Companies
Growth
On growth, Stellantis N.V. ranks near the top of the group; Westlake Corporation sits in the weaker half.
Valuation
On valuation, the same pattern holds: both are strong, but Stellantis N.V. still leads clearly.
Growth — Dominant Gap
STLAM.MI
74
WLK
0
Gap+74in favour of STLAM.MI

One company is still expanding while the other is contracting, which creates a very wide growth split.

What keeps the gap from being one-sided

The market setup is mixed for both, so the structural comparison carries most of the weight here.

What this means for the comparison

The lead is built on both growth and valuation — though profitability still provides a counterweight.

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Break down the STLAM.MI vs WLK comparison across all dimensions with the full interactive tool.

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Similar growth-and-valuation comparisons

Explore how STLAM.MI and WLK each compare against other companies in their peer groups.

Rule-based, descriptive analysis only. Derived from peer percentile dimensions. Not investment advice. Peer groups are determined algorithmically based on structural similarity — not by sector classification alone.

How AssetNext Peer Scores Work

AssetNext scores reflect each company's structural position within its functional peer group — not a ranking against all stocks simultaneously. Peers are identified by similarity across eight financial dimensions, including revenue growth trajectory, margin structure, capital intensity, and earnings stability. A score of 75 means the company ranks in the top quartile within its own peer group, not the entire market.

Four dimension scores drive the overall peer score: Growth (revenue trajectory and expansion dynamics), Quality (margin structure and capital efficiency), Valuation (peer-relative pricing on standard multiples), and Stability (earnings consistency and financial predictability). Each dimension is scored 0–100 relative to the peer group, then combined into an overall peer score using equal weighting.

Scores are recalculated periodically as underlying financial data is updated. All analysis is descriptive and rule-based — AssetNext describes structural realities and never issues buy, sell or hold recommendations.