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

SelectedToday6M Return

ERIEErie Indemnity Co− 2.16%− 5.11%
AJGArthur J. Gallagher & Co.—+ 15.11%
Partial Period · Feb 27, 2026 — Sep 4, 2026
AONAon PLC− 1.20%− 3.69%
Partial Period · Feb 27, 2026 — Sep 4, 2026

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.

ERIE− 5.1%AJG+ 15.1%AON− 3.7%Tap or hover the chart for values along the way

Metric	ERIEErie Indemnity Co	AJGArthur J. Gallagher & Co.	AONAon PLC
Return
Last Price	252.80	—	323.09
Daily Change	− 2.16%	—	− 1.20%
Period ReturnPast 6 Months	− 5.11%	+ 15.11%Feb 27, 2026 — Sep 4, 2026	− 3.69%Feb 27, 2026 — Sep 4, 2026
Valuation
Market Cap	$13.2 B	$68.2 B	$68.5 B
P/E Ratio	24.37	—	17.81
Dividend Yield	1.63%	0.87%	0.75%
Net MarginTrailing 12M	14.0%	10.0%	22.3%
Risk
Beta	0.25	0.49	0.64
52-Week Range	204.63 — $341.71	190.75 — $313.55	304.59 — $382.34
Company
Sector	Financials	Financials	Financials
Industry	Insurance	Insurance	Insurance

Company

ERIEFinancials · Insurance
AJGFinancials · Insurance
AONFinancials · Insurance

FinnhubUpdated 23:00

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.