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Mega Cap
Diversified Insurance
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
BRK.B icon
1
Berkshire Hathaway Class B
BRK.B
$1.06T
$1.06T $489.65 0.33%
BRK.A icon
2
Berkshire Hathaway Class A
BRK.A
$1.05T
$1.05T $733,526 0.36%

Mega Cap Diversified Insurance Stocks at a Glance

Diversified insurers underwrite across life, health, and property and casualty lines. The multi-line spread balances catastrophe exposure against long-duration liabilities, with returns driven by underwriting discipline and the investment income earned on float.

There are 2 mega cap Diversified Insurance stocks — companies in the Diversified Insurance industry with a market cap over $200B — worth a combined $2.11T.

The largest by market cap are Berkshire Hathaway Class B (BRK.B) at $1.06T and Berkshire Hathaway Class A (BRK.A) at $1.05T.

Among institutional investors, Berkshire Hathaway Class B (BRK.B) drew the most net new fund positions in Q1 2026: 226 funds opened new positions, taking total fund holders down 26 (0.53%) quarter-over-quarter.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q1 2026.