Is AON or BRO more undervalued in 2026?

CirclFi compares Aon plc (AON) and Brown & Brown, Inc. (BRO) using 13 institutional-grade valuation models. AON has a Quality of Company score of 9.3/10 while BRO scores 9.2/10.

Which is a better buy — AON or BRO?

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 AON and BRO valuations compare?

AON at $318.30 and BRO at $56.84 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

AON vs BRO Valuation Comparison 2026 — Intrinsic Value Analysis

AON

Insurance Brokers

Aon plc

Quality

9.3

out of 10

Value Trap

SAFE

Price

$318.30

Last close

Models

12/13

Active

BRO

Insurance Brokers

Brown & Brown, Inc.

Quality

9.2

out of 10

Value Trap

SAFE

Price

$56.84

Last close

Models

13/13

Active

Model-by-Model Comparison

Model	Type	AON Fair Value	AON Upside	BRO Fair Value	BRO Upside
Bayesian DCF	Intrinsic	$259.72	-18.4%	$60.56	+6.5%
Earnings Power Value	Intrinsic	$37.84	-88.1%	$7.51	-86.8%
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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AON vs BRO — Which Stock Is More Undervalued?

AON scores higher with a 9.3/10 quality rating vs BRO's 9.2/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Aon plc (AON) and Brown & Brown, Inc. (BRO) 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.

AON currently trades at $318.30 with a QOC of 9.3/10, while BRO trades at $56.84 with a QOC of 9.2/10.

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).