Is IBOC or ISBA more undervalued in 2026?

CirclFi compares International Bancshares Corpor (IBOC) and Isabella Bank Corporation (ISBA) using 13 institutional-grade valuation models. IBOC has a Quality of Company score of 9.2/10 while ISBA scores 8.7/10.

Which is a better buy — IBOC or ISBA?

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 IBOC and ISBA valuations compare?

IBOC at $72.41 and ISBA at $41.13 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

IBOC vs ISBA Valuation Comparison 2026 — Intrinsic Value Analysis

IBOC

Banks - Regional

International Bancshares Corpor

Quality

9.2

out of 10

Value Trap

SAFE

Price

$72.41

Last close

Models

12/13

Active

ISBA

Banks - Regional

Isabella Bank Corporation

Quality

8.7

out of 10

Value Trap

SAFE

Price

$41.13

Last close

Models

11/13

Active

Model-by-Model Comparison

Model	Type	IBOC Fair Value	IBOC Upside	ISBA Fair Value	ISBA Upside
Bayesian DCF	Intrinsic	$119.60	+65.2%	$41.52	+0.9%
Earnings Power Value	Intrinsic	$61.62	-14.9%	$27.98	-32.0%
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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IBOC vs ISBA — Which Stock Is More Undervalued?

IBOC scores higher with a 9.2/10 quality rating vs ISBA's 8.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing International Bancshares Corpor (IBOC) and Isabella Bank Corporation (ISBA) 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.

IBOC currently trades at $72.41 with a QOC of 9.2/10, while ISBA trades at $41.13 with a QOC of 8.7/10.

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).