Aon plc (AON) Fair Value 2026

AON · Insurance Brokers ·

By CirclFi Research Team · Data from SEC EDGAR, FRED & GDELT

Quality Score

8.2 /10

32 fundamental signals · 6 models active

Value Trap Risk

SAFE (12/100)

Quick Summary — As of 2026-08-28, Aon plc (AON) trades at $355.40, versus a $271.71 median fair value across its 6 active models — 23.5% below the current price. QOC: 8.2/10. Value Trap Risk: 12/100 (SAFE). 6/13 models active.

Key Facts

Ticker
AON
Price
$355.40
Quality Score
8.2/10
Value Trap Risk
12/100
Models Active
6/13
Last Updated
Strength: Quality Score of 8.2/10 indicates strong fundamentals
Risk: Majority of models suggest overvaluation

Is Aon plc (AON) Undervalued or Overvalued in 2026?

According to CirclFi’s 6-model valuation engine, Aon plc (AON) appears overvalued as of : the median of 6 independent fair value estimates is $271.71, 23.5% below the current price of $355.40. Estimates range from $142.11 to $625.00. AON scores 8.2/10 on fundamental quality and 12/100 on value-trap risk.

For context, the median US equity CirclFi rates trades at an implied -23.4% versus its own 13-model consensus, across 3,809 rated companies as of 2026-08-28. AON’s -23.5% gap is wider than that market norm, and the Insurance Brokers sector median is -17.5%. Full market index →

This verdict compares price to intrinsic value only — it is not a buy or sell rating. For the decision case (bull vs bear arguments, risk factors, peers), read Should You Buy Aon plc Stock in 2026? →

What Fair Value Does Each Model Give AON?

6 Intrinsic Value Models vs. Current Price ($355.40)

Core Models (Unlocked)
Model Fair Value Upside
Intrinsic · High Conviction
 $142.11 -60.0%
Ensemble · Low Conviction
 $267.34 -24.8%
Intrinsic · High Conviction
 $193.80 -45.5%
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What Is AON's Fair Value Range?

Spread across 6 independent models · $142.11 to $625.00

CirclFi's 6 active models place Aon plc (AON) between $142.11 and $625.00 per share, a spread of 178% of the median. The median of that range — $271.71 — is the fair value CirclFi publishes for AON, against a current price of $355.40.

Low · EPVHigh · Regime Cross
$142.11median $271.71$625.00
Where the range comes from
Most bearish modelEarnings Power Value (EPV)$142.11
Most bullish modelRegime Cross-Sectional$625.00
Model agreement2 bullish · 4 bearishwide

A band this wide is itself the finding. When independent methods land far apart, they are reading a business whose value depends heavily on which lens you apply — volatile earnings, heavy reinvestment, or an asset base that cash-flow and asset-based methods score differently. That disagreement is information: it says the choice of method matters more than usual for AON. Treat the median as one reading among several and compare the individual models below before acting.

Every figure above is one model's standalone output on AON, not a CirclFi price target. How each model works →

What Is Aon plc (AON) Worth in 2026?

According to the CirclFi Deep Alpha Valuation Engine, Aon plc's intrinsic value is estimated at a median fair value of $271.71. Trading at $355.40, the stock is approaching fair value or slight overvaluation (implied return of -23.5%), as 4 of 6 models suggest limited further upside. The most optimistic model, Regime Cross, places fair value at $625.00 (+75.9%), while EPV — the most conservative — estimates $142.11 (-60.0%). This +135.9% gap reflects genuine analytical uncertainty about Aon plc's intrinsic worth. Among models with highest confidence, EPV lean bearish — adding weight to the bearish side of the thesis.

What Do the Models Say About AON?

6 of 13 models are currently active for AON. Of these, 2 models suggest upside while 4 models suggest overvaluation. Taken together, their median fair value for AON is $271.71 — the figure CirclFi publishes as this stock's fair value. See which stocks rank higher →

How Does AON Rank in Insurance Brokers?

Among 21 Insurance Brokers stocks, AON ranks #7 by Quality of Company score. CirclFi's QOC score of 8.2/10 evaluates 32 fundamental signals. A score of 8.2 places AON in the top tier.

The Insurance Brokers sector introduces analytical considerations specific to insurance industry businesses. For Aon plc, metrics like loss ratio provide important context that general-purpose valuation models may underweight.

Is AON a Value Trap?

CirclFi's Value Trap algorithm assigns AON a score of 12/100 (SAFE). This indicates minimal risk. Fundamentals are healthy. The score cross-references apparent undervaluation against fundamental deterioration signals. Browse lowest value-trap stocks →

Multi-Model Methodology

6 of 13 models are active for Aon plc. Moderate coverage provides meaningful perspective. Each model applies a fundamentally different valuation philosophy. See the complete methodology →

According to the CirclFi Quality of Company (QOC) framework, Aon plc earns a quality score of 8.2/10. This robust rating reflects the company's standing across 32 fundamental signals spanning profitability, growth consistency, balance sheet strength, and capital allocation efficiency.

The gap between the most bullish and bearish model spans +135.9% — demonstrating why single-model analysis is dangerous. Browse all stocks with 13-model coverage →

Data Sources & Confidence

Every AON valuation is built from SEC EDGAR XBRL filings — 700+ standardized financial tags. Macroeconomic context from FRED calibrates discount rates, while GDELT news sentiment feeds into our Sentiment SOTP model. All pipelines run daily. Read the complete data methodology →

Across AON's 6 active models, average confidence is 47%. Lower confidence may reflect limited history or high volatility.

CirclFi's output is a research starting point, not a buy/sell signal. All data updates daily. Read the full methodology →

This analysis is produced by the CirclFi Valuation Engine using quantitative models applied to SEC EDGAR filings, public market feeds, and FRED macroeconomic indicators. It is not financial advice.

Read the full investment analysis: Should You Buy Aon plc Stock in 2026? →

Bull case, bear case, risk factors & peer comparison — updated daily

Which Similar Insurance Brokers Stocks Should You Also Analyze?

10 related Insurance Brokers stocks with 13-model coverage

BROBrown & Brown, Inc.QOC 8.3AJGArthur J. Gallagher & Co.QOC 7.9WTWWillis Towers Watson Public Limited CompanyQOC 8.5QDMIQDM International Inc.QOC 7.6GSHDGoosehead Insurance, Inc.QOC 8.5TWFGTWFG, Inc.QOC 7.6SLQTSelectQuote, Inc.QOC 7.5BWINThe Baldwin Insurance Group, Inc.QOC 6.0CRVLCorVel CorporationQOC 9.1ERIEErie Indemnity CompanyQOC 8.9

Read investment analysis: BRO · AJG · WTW · QDMI · GSHD · TWFG · SLQT · BWIN · CRVL · ERIE

Which Other Stocks Have a Similar Quality Score to AON?

7 companies across all industries closest to AON’s Quality of Company score of 8.2/10.

GPKGraphic Packaging Holding CompanyQOC 8.2TMPTompkins Financial CorporationQOC 8.2PSIXPower Solutions International, Inc.QOC 8.2ADAMAdamas Trust, Inc.QOC 8.2HSYThe Hershey CompanyQOC 8.2WSBCWesBanco, Inc.QOC 8.2NVDANVIDIA CorporationQOC 10.0

Read investment analysis: GPK · TMP · PSIX · ADAM · HSY · WSBC · NVDA

What Else Do Investors Ask About Aon plc’s Valuation?

What is Aon plc's intrinsic value in 2026?

CirclFi puts Aon plc (AON)'s intrinsic value at $271.71 — the median of 6 independent model estimates as of 2026-08-28, ranging from $142.11 to $625.00. The Quality of Company score is 8.2/10 across 32 fundamental signals. All models use SEC EDGAR filings updated daily. See our methodology page for how each model works.

Is AON overvalued or undervalued right now?

At $355.40, 2 of 6 active models suggest AON may be undervalued, while 4 indicate potential overvaluation. The median of all 6 fair value estimates is $271.71, 23.5% below the current price of $355.40 — a consensus view that AON is overvalued. The assessment depends on which methodology best fits Aon plc's business model in Insurance Brokers.

What does a Quality of Company score of 8.2 mean for AON?

Aon plc's QOC of 8.2/10 reflects 32 fundamental signals: profitability margins, revenue growth consistency, balance sheet leverage, free cash flow generation, and capital allocation efficiency. Scores above 7 indicate strong fundamentals and disciplined management.

How many valuation models does CirclFi run on AON?

CirclFi analyzes AON with 13 institutional-grade models daily: Bayesian DCF (Monte Carlo + jump-diffusion), EPV (Greenwald zero-growth), EROIC Spread (McKinsey reinvestment), First Chicago (3-scenario), Markov DDM (regime-switching), ML-RIV (machine learning residual income), Dynamic NAV (asset-based), PWERM (option-theoretic), Regime Cross-Sectional (relative), Sentiment SOTP (hybrid), CUCE Ensemble (meta-model), FTNN Topology (neural network), and RCMH-DCF (conditional regime). Currently 6 of 13 are active for this stock. Read the full methodology →

Which valuation models are most bullish and most bearish on AON?

Of the 6 models currently active on AON, Regime Cross-Sectional is the most bullish at $625.00 per share, and Earnings Power Value (EPV) is the most bearish at $142.11. CirclFi's published fair value for AON is the median of that range, $271.71, not either extreme. The gap between the two ends equals 178% of the median — a wide spread, meaning the methods genuinely disagree and the median should carry less weight. Browse stocks by value-trap risk →

Is AON a value trap in 2026?

Aon plc's Value Trap score is 12/100 (SAFE). This low score indicates the current valuation is not artificially depressed by fundamental deterioration, suggesting genuine opportunity rather than a trap.

Cite this analysis — “According to CirclFi’s 6-model valuation engine, Aon plc (AON) has a median fair value of $271.71 — 23.5% below the current price of $355.40 — as of 2026-08-28.” Source: circlfi.com/stock/AON/ · Methodology
Primary sources for this AON valuation
  • Financial statements: Aon plc 10-K and 10-Q filings on SEC EDGAR (CIK 0000315293) — 700+ standardized XBRL tags, published by the U.S. Securities and Exchange Commission.
  • Discount-rate inputs: FRED, Federal Reserve Bank of St. Louis — risk-free rates, VIX, yield curve, inflation.
  • News sentiment: The GDELT Project — global media tone, input to the Sentiment SOTP model.
  • Model definitions: CirclFi methodology — the published specification for all 13 models, including the academic sources each one implements.

Market data for AON as of ; valuations recomputed .

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