Is MNTK or OPAL more undervalued in 2026?

CirclFi compares Montauk Renewables, Inc. (MNTK) and OPAL Fuels Inc. (OPAL) using 13 institutional-grade valuation models. MNTK has a Quality of Company score of 6.7/10 while OPAL scores 5.8/10.

Which is a better buy — MNTK or OPAL?

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 MNTK and OPAL valuations compare?

MNTK at $1.74 and OPAL at $2.26 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

MNTK vs OPAL Valuation Comparison 2026 — Intrinsic Value Analysis

MNTK

Gas & Other Services Combined

Montauk Renewables, Inc.

Quality

6.7

out of 10

Value Trap

SAFE

Price

$1.74

Last close

Models

11/13

Active

OPAL

Gas & Other Services Combined

OPAL Fuels Inc.

Quality

5.8

out of 10

Value Trap

SAFE

Price

$2.26

Last close

Models

9/13

Active

Model-by-Model Comparison

Model	Type	MNTK Fair Value	MNTK Upside	OPAL Fair Value	OPAL Upside
Bayesian DCF	Intrinsic	$3.51	+101.7%	$4.63	+104.9%
Earnings Power Value	Intrinsic	$0.30	-78.9%	—	—
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$1.37	-10.6%	$5.37	+136.6%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$•••.••	••.•%	$•••.••	••.•%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%

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MNTK vs OPAL — Which Stock Is More Undervalued?

MNTK scores higher with a 6.7/10 quality rating vs OPAL's 5.8/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Montauk Renewables, Inc. (MNTK) and OPAL Fuels Inc. (OPAL) 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.

MNTK currently trades at $1.74 with a QOC of 6.7/10, while OPAL trades at $2.26 with a QOC of 5.8/10.

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).