Is ACM or BLD more undervalued in 2026?

CirclFi compares AECOM (ACM) and TopBuild Corp. (BLD) using 13 institutional-grade valuation models. ACM has a Quality of Company score of 8.7/10 while BLD scores 9.8/10.

Which is a better buy — ACM or BLD?

Compare intrinsic values from 13 independent models against current market prices. CirclFi also calculates Value Trap scores. This is not financial advice — conduct your own analysis.

How do ACM and BLD valuations compare?

ACM at $70.87 and BLD at $420.68 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

ACM vs BLD Valuation Comparison 2026 — Intrinsic Value Analysis

ACM

Engineering & Construction

AECOM

Quality

8.7

out of 10

Value Trap

SAFE

Price

$70.87

Last close

Models

11/13

Active

BLD

Engineering & Construction

TopBuild Corp.

Quality

9.8

out of 10

Value Trap

SAFE

Price

$420.68

Last close

Models

12/13

Active

Model-by-Model Comparison

Model	Type	ACM Fair Value	ACM Upside	BLD Fair Value	BLD Upside
Bayesian DCF	Intrinsic	$49.30	-30.4%	$420.57	-0.0%
Earnings Power Value	Intrinsic	$66.19	-6.6%	$187.19	-55.5%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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ACM vs BLD — Which Stock Is More Undervalued?

BLD scores higher with a 9.8/10 quality rating vs ACM's 8.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing AECOM (ACM) and TopBuild Corp. (BLD) across 13 institutional-grade valuation models reveals how each company's intrinsic value stacks up against its market price. CirclFi's engine processes SEC EDGAR 10-K and 10-Q filings, FRED macroeconomic data, and GDELT news sentiment to generate independent fair value estimates daily.

ACM currently trades at $70.87 with a QOC of 8.7/10, while BLD trades at $420.68 with a QOC of 9.8/10.

Both companies are analyzed with models spanning intrinsic (Bayesian DCF, EPV), scenario-based (First Chicago), regime-switching (Markov DDM, RCMH-DCF), machine learning (ML-RIV, FTNN Topology), and ensemble methods (CUCE).