Side by Side

Compare

Read two to four stocks on the same scale — return, valuation and volatility in one table.

SelectedToday1Y Return

MRSHMarsh & McLennan Companies Inc− 0.88%− 8.82%
Partial Period · Sep 2, 2025 — Sep 4, 2026
AJGArthur J. Gallagher & Co.− 0.80%− 10.42%
AONAon PLC− 1.30%− 2.81%
WTWWillis Towers Watson PLC− 2.11%+ 3.76%

Four symbols is the limit; remove one to add another.

Period Return

Each series is converted to a percentage of its own starting point, so all of them begin at zero. What is compared is the return over the period, not price levels.

MRSH− 8.8%AJG− 10.4%AON− 2.8%WTW+ 3.8%Tap or hover the chart for values along the way

Metric	MRSHMarsh & McLennan Companies Inc	AJGArthur J. Gallagher & Co.	AONAon PLC	WTWWillis Towers Watson PLC
Return
Last Price	186.80	264.53	322.77	334.85
Daily Change	− 0.88%	− 0.80%	− 1.30%	− 2.11%
Period ReturnPast Year	− 8.82%Sep 2, 2025 — Sep 4, 2026	− 10.42%	− 2.81%	+ 3.76%
Valuation
Market Cap	$89.1 B	$68.7 B	$68.5 B	$31.6 B
P/E Ratio	22.87	43.74	17.80	20.56
Dividend Yield	—	0.87%	0.75%	1.31%
Net MarginTrailing 12M	14.2%	10.0%	22.3%	15.5%
Risk
Beta	0.55	0.49	0.64	0.45
52-Week Range	156.60 — $207.83	190.75 — $313.55	304.59 — $382.34	240.61 — $352.79
Company
Sector	Financials	Financials	Financials	Financials
Industry	Insurance	Insurance	Insurance	Insurance

Company

MRSHFinancials · Insurance
AJGFinancials · Insurance
AONFinancials · Insurance
WTWFinancials · Insurance

CacheUpdated 21:07May Be Out Of Date

To Understand This

P/E and the Valuation RatiosYou can't tell whether a stock is cheap or expensive by looking at its price.Diversification: How Many Baskets Are Enough?Owning ten different stocks is not the same as owning ten different risks.