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Stock Comparison · Industry comparison · Specialty Industrial Machinery

Pentair vs The Weir Group: Which Stock Looks Stronger in 2026?

The structural profiles are close, with Pentair carrying a narrow edge on stability. The Weir still leads on growth and stability, which keeps the comparison from looking entirely one-sided. Both sides have seen trend damage — neither carries a clear market edge right now. With both trends damaged, the structural comparison carries most of the weight here.

The comparison is based on similar long-term financial trajectories, not sector labels. Peer scores are normalised within each company's primary universe (PNR: S&P 500, WEIR.L: STOXX 600).

Updated 2026-08-16

The page question resolves through stability, where The Weir Group PLC holds the stronger read even though the broader score still favours Pentair plc.

INDUSTRY COMPARISON

Both operate in: Specialty Industrial Machinery

This comparison is based on industry proximity, not on functional trajectory similarity. PNR and WEIR.L share the same industry classification.

For a similarity-based comparison, see how Pentair and The Weir each position within their functional peer groups in AssetNext.

Peer-Relative Score
PNR
Pentair plc
46
Peer-Score
Signal qualityMedium
Peer basis: S&P 500
vs
WEIR.L
The Weir Group PLC
43
Peer-Score
Signal qualitylow
Peer basis: STOXX 600

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

The clearest separation appears in stability.

Dimension spread: PNR vs WEIR.L Profitability 35 22 Stability 14 47 Valuation 85 54 Growth 36 57 PNR WEIR.L
Gap Ranking
#1 Stability +33
#2 Valuation +31
#3 Growth +21
#4 Profitability +13
Price Setup

Left means cheaper relative valuation. Higher means stronger structure.

Price setup map for PNR and WEIR.L Stronger + cheaper Stronger + richer Weaker + cheaper Weaker + richer PNRWEIR.L Relative valuation Structural strength

The Weir Group PLC occupies the cheaper side of the setup map, although Pentair plc still holds the stronger structural profile.

Valuation position uses peer-relative PE percentile (idx_pct_pe) where available.

Relative Position vs Comparable Companies
Stability
Stability also leans toward The Weir Group PLC, reinforcing the broader structural lead.
Valuation
Both rank well on valuation, but Pentair plc still holds a clear edge.
Stability — Dominant Gap
PNR
14
WEIR.L
47
Gap+33in favour of WEIR.L

The stability gap is wide, with the stronger side looking materially steadier through time.

What keeps the gap from being one-sided

A meaningful counterforce remains in growth, which keeps the comparison from looking completely one-sided.

What this means for the comparison

Stability is the clearest driver of the lead, with valuation adding further support — though growth still provides a real counterweight.

Explore full peer positioning in AssetNext

Break down the PNR vs WEIR.L comparison across all dimensions with the full interactive tool.

Explore full breakdown →
Other comparisons with conflicting dimension signals

Explore how PNR and WEIR.L 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.

Because scores are peer-relative, the same company can have slightly different scores in different index universes. On comparison pages, both companies are shown within their shared peer universe wherever possible — so the scores are directly comparable. The peer basis is stated on each score card.

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.