Do you show sector history or returns?

No. Combined market cap is a size snapshot. It can change because companies got larger or smaller, names crossed the floor, or the mix of constituents changed. That is not a cap-weighted or equal-weighted sector return, and we do not persist constituent dates.

Who is the largest Financial Services company?

As of October 27, 2026, Berkshire Hathaway Inc. (BRK-A) is the largest at $1.17T — 8.66% of the sector.

Which industry is largest in Financial Services?

As of October 27, 2026, Banks - Diversified is the largest industry slice by combined market cap (28.20% of the sector, 18 companies). Industry labels are not remapped.

How concentrated is Financial Services?

The three largest companies are 20.79% of the sector. The ten largest are 37.61%. Median company size is $5.49B. Combined size is not a forecast.

Largest Financial Services companies by market cap

Q: Which companies are included?

MarketCapLens includes common equity listed on NASDAQ, NYSE, or AMEX that clears the $1B market-cap floor and is actively trading. ETFs, funds, preferred shares, equity units, and warrants are excluded. Dual share classes of the same company are counted once.

Financial Services groups banks, insurers, asset managers, and payment or credit businesses under one industry-group label. Combined size is not a sector return. See how the ranking works.

408 U.S.-listed Financial Services companies with a market cap of at least $1B are ranked here by market capitalization, worth a combined $13.54T — 13.75% of the total market tracked on MarketCapLens. The most valuable is Berkshire Hathaway Inc. at $1.17T. As of October 27, 2026. Size ranking for research, not a sector recommendation.

Companies

408

Combined market cap

$13.54T

Share of total

13.75%

Largest

BRK-A

Median size

$5.49B

Top 3

20.79%

Companies ranked by market cap

Financial Services companies ranked by market capitalization. Sortable by column.
#	Company	Market cap	Price	1D %	Volume

Largest industries in Financial Services

Industries in Financial Services by combined market cap, company count, and share of the sector.
Industry	Companies	Combined cap	% of sector
Banks - Diversified	18	$3.82T	28.20%
Financial - Credit Services	31	$1.9T	14.01%
Banks - Regional	153	$1.71T	12.64%
Insurance - Diversified	14	$1.39T	10.27%
Asset Management	52	$1.27T	9.36%
Financial - Capital Markets	37	$1.02T

Concentration

The largest company, Berkshire Hathaway Inc. (BRK-A), is 8.66% of Financial Services. The three largest — Berkshire Hathaway Inc. (BRK-A), JPMorgan Chase & Co. (JPM), and Visa Inc. (V) — are 20.79% of the sector. The ten largest are 37.61%. Berkshire Hathaway Inc. is classified as Insurance - Diversified. The largest industry by combined cap is Banks - Diversified, so the biggest company and the biggest industry slice are not the same group.

Frequently asked questions

What is the Financial Services sector?

Financial Services groups banks, insurers, asset managers, and payment or credit businesses under one industry-group label.

How are companies classified?

Each ranking row has one sector string from Financial Modeling Prep (GICS-style groups). MarketCapLens does not license GICS or remap those labels. A company belongs to one sector. Sectors with fewer than 3 companies above the $1B floor are omitted.

How is sector market cap calculated?

Sector market cap is the sum of each constituent company's market cap. A company's weight is its market cap divided by that sector total. Share of tracked market cap is this sector versus every company on MarketCapLens, including untagged names.

Which companies are included?