Is ISBA or ISTR more undervalued in 2026?

CirclFi compares Isabella Bank Corporation (ISBA) and Investar Holding Corporation (ISTR) using 13 institutional-grade valuation models. ISBA has a Quality of Company score of 8.7/10 while ISTR scores 7.2/10.

Which is a better buy — ISBA or ISTR?

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 ISBA and ISTR valuations compare?

ISBA at $41.13 and ISTR at $28.28 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

ISBA vs ISTR Valuation Comparison 2026 — Intrinsic Value Analysis

ISBA

Banks - Regional

Isabella Bank Corporation

Quality

8.7

out of 10

Value Trap

SAFE

Price

$41.13

Last close

Models

11/13

Active

ISTR

Banks - Regional

Investar Holding Corporation

Quality

7.2

out of 10

Value Trap

SAFE

Price

$28.28

Last close

Models

12/13

Active

Model-by-Model Comparison

Model	Type	ISBA Fair Value	ISBA Upside	ISTR Fair Value	ISTR Upside
Bayesian DCF	Intrinsic	$41.52	+0.9%	$12.07	-57.3%
Earnings Power Value	Intrinsic	$27.98	-32.0%	$19.83	-29.9%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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ISBA vs ISTR — Which Stock Is More Undervalued?

ISBA scores higher with a 8.7/10 quality rating vs ISTR's 7.2/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Isabella Bank Corporation (ISBA) and Investar Holding Corporation (ISTR) 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.

ISBA currently trades at $41.13 with a QOC of 8.7/10, while ISTR trades at $28.28 with a QOC of 7.2/10.

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).