Arthur J Gallagher & vs Marsh & McLennan Companies: Fair Value & Quality
Both stocks run through our valuation models. Here is how Arthur J Gallagher & (AJG) and Marsh & McLennan Companies (MRSH) compare, as of Aug 14, 2026.
Head-to-head numbers
Green value = the better side for that row (for valuation multiples: lower = cheaper).
Even match: 7 to 7 metric wins.
Dash = not meaningfully computable, for example with negative equity.
Quality in detail
The quality score, broken down into the same factor families as on the stock page, 0 to 100 per family.
What the models say
The median fair value (base case) per model family, each in the currency of its trading venue. Green = above the current price, red = below.
Arthur J Gallagher &
6 of 6 models see the stock below the current price.
Marsh & McLennan Companies
6 of 6 models see the stock below the current price.
Scenario ranges
From our cautious bear case to the optimistic bull case. The white tick is the current price: left of fair value means room to run.
Compare two other stocks
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Ranked within their sector
Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.
Arthur J Gallagher & · Financials
Marsh & McLennan Companies · Financials
Bottom line
As of Aug 14, 2026, Fair Value Calculator sees Marsh & McLennan Companies as the less overvalued of the two: Arthur J Gallagher & trades at $253 versus a fair value of $64.24 (-75%), while Marsh & McLennan Companies trades at $189 versus $112 (-41%).
Marsh & McLennan Companies has the higher quality score (64/100).
See the full analysis →More comparisons
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A model-based valuation snapshot from 21 models. Values change with price and fundamentals; the date shown above applies.