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Stock Comparison · Valuation-led comparison

Iron Mountain vs United Rentals: Which Stock Looks Stronger in 2026?

United Rentals holds the cleaner structural position, with valuation as the main driver and growth adding further support. Iron Mountain still leads on growth and stability, which keeps the comparison from looking entirely one-sided. In the market, Iron Mountain carries the stronger setup — intact trend against United Rentals's broken trend. That leaves a split case: the structural lead stays with United Rentals, 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

Most of the separation is still concentrated in valuation. The overall score gap is 20 points in favour of United Rentals, Inc..

Trajectory Similarity
0.70
Similar
Peer-set rank: #29
within Iron Mountain Incorporated's functional peer set

This pair is matched through long-term financial trajectory similarity within the selected peer universe.

The pair sits on a clearly comparable long-term path, though it is not a near-twin match.

The match is driven mainly by investment intensity and margin consistency.

Similarity drivers
investment intensitymargin consistency
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
IRM
Iron Mountain Incorporated
25
Peer-Score
Signal qualityHigh
vs
URI
United Rentals, Inc.
45
Peer-Score
Signal qualityMedium

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

Pricing shapes this comparison more than a broad operating gap.

Dimension spread: IRM vs URI Profitability 11 33 Stability 38 22 Valuation 8 84 Growth 58 30 IRM URI
Gap Ranking
#1 Valuation +76
#2 Growth +28
#3 Profitability +22
#4 Stability +16
Price Setup

Left means cheaper relative valuation. Higher means stronger structure.

Price setup map for IRM and URI Stronger + cheaper Stronger + richer Weaker + cheaper Weaker + richer IRMURI Relative valuation Structural strength

The two profiles are relatively close, but the price setup still leans toward United Rentals, Inc..

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

Relative Position vs Comparable Companies
Valuation
United Rentals, Inc. ranks near the top of the group on valuation; Iron Mountain Incorporated sits in the weaker half.
Growth
On growth, Iron Mountain Incorporated is positioned higher in the group, while United Rentals, Inc. is closer to the middle.
Valuation — Dominant Gap
IRM
8
URI
84
Gap+76in favour of URI

The multiple-based pricing edge comes from a forward P/E that is 24.5 turns lower.

What keeps the gap from being one-sided

Iron Mountain Incorporated still shows lower market-fundamental divergence, which keeps the wider picture mixed rather than completely one-sided.

What this means for the comparison

The valuation lead is clear, but pricing and growth still pull in the other direction — the result holds, but not without friction.

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Break down the IRM vs URI comparison across all dimensions with the full interactive tool.

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Other comparisons with conflicting dimension signals

Explore how IRM and URI 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.