Is TANH or WLK more undervalued in 2026?

CirclFi compares Tantech Holdings Ltd. (TANH) and Westlake Corporation (WLK) using 13 institutional-grade valuation models. TANH has a Quality of Company score of 1.6/10 while WLK scores 4.4/10.

Which is a better buy — TANH or WLK?

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 TANH and WLK valuations compare?

TANH at $0.43 and WLK at $86.83 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

TANH vs WLK Valuation Comparison 2026 — Intrinsic Value Analysis

TANH

Industrial Organic Chemicals

Tantech Holdings Ltd.

Quality

1.6

out of 10

Value Trap

—

Price

$0.43

Last close

Models

9/13

Active

WLK

Industrial Organic Chemicals

Westlake Corporation

Quality

4.4

out of 10

Value Trap

SAFE

Price

$86.83

Last close

Models

13/13

Active

Model-by-Model Comparison

Model	Type	TANH Fair Value	TANH Upside	WLK Fair Value	WLK Upside
Bayesian DCF	Intrinsic	$0.09	-79.4%	$22.69	-73.9%
Earnings Power Value	Intrinsic	$0.59	+62.5%	$34.05	-60.8%
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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TANH vs WLK — Which Stock Is More Undervalued?

WLK scores higher with a 4.4/10 quality rating vs TANH's 1.6/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Tantech Holdings Ltd. (TANH) and Westlake Corporation (WLK) 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.

TANH currently trades at $0.43 with a QOC of 1.6/10, while WLK trades at $86.83 with a QOC of 4.4/10.

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).