Is ROCK or TREX more undervalued in 2026?

CirclFi compares Gibraltar Industries, Inc. (ROCK) and Trex Company, Inc. (TREX) using 13 institutional-grade valuation models. ROCK has a Quality of Company score of 8.0/10 while TREX scores 9.5/10.

Which is a better buy — ROCK or TREX?

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 ROCK and TREX valuations compare?

ROCK at $39.23 and TREX at $42.39 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

ROCK vs TREX Valuation Comparison 2026 — Intrinsic Value Analysis

ROCK

Building Products & Equipment

Gibraltar Industries, Inc.

Quality

8.0

out of 10

Value Trap

SAFE

Price

$39.23

Last close

Models

13/13

Active

TREX

Building Products & Equipment

Trex Company, Inc.

Quality

9.5

out of 10

Value Trap

SAFE

Price

$42.39

Last close

Models

13/13

Active

Model-by-Model Comparison

Model	Type	ROCK Fair Value	ROCK Upside	TREX Fair Value	TREX Upside
Bayesian DCF	Intrinsic	$13.55	-63.6%	$5.38	-87.3%
Earnings Power Value	Intrinsic	$15.75	-59.8%	$15.39	-63.7%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$•••.••	••.•%	$•••.••	••.•%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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ROCK vs TREX — Which Stock Is More Undervalued?

TREX scores higher with a 9.5/10 quality rating vs ROCK's 8.0/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Gibraltar Industries, Inc. (ROCK) and Trex Company, Inc. (TREX) 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.

ROCK currently trades at $39.23 with a QOC of 8.0/10, while TREX trades at $42.39 with a QOC of 9.5/10.

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).