# How the MarketCapLens Ranking Works

> How we rank companies by market cap: which companies qualify, how share classes are combined, where the data comes from, and how often it updates.

Source: MarketCapLens — https://www.marketcaplens.com/learn/how-the-ranking-works
Updated: 2026-08-13

The [MarketCapLens ranking](https://www.marketcaplens.com/) lists companies by [market capitalization](https://www.marketcaplens.com/learn/what-is-market-capitalization),
largest first. Here is exactly how that list comes together, so you know what you are looking at.

**Key takeaways**

- We rank U.S.-listed companies above a minimum market-cap threshold.
- Market cap is share price × shares outstanding, in U.S. dollars.
- A company's multiple share classes are combined so it is counted once.
- Preferred shares, units, warrants, ETFs, and funds are excluded.
- The data refreshes multiple times each trading day, with an "as of" date on every page.

## Which companies are included?

The ranking covers **U.S.-listed companies**, those trading on major American exchanges such as the
NYSE and NASDAQ, above a **minimum market-cap threshold**. The floor keeps the list focused on companies
of real size rather than the long tail of tiny stocks. The threshold in effect appears on the homepage
next to the company count.

We focus on **common equity**. ETFs, funds, preferred shares, equity units, and warrants are left out
so the list stays a ranking of operating companies, not every tradable ticker.

## How is each company's market cap calculated?

Each company's market cap is its current share price times its
[shares outstanding](https://www.marketcaplens.com/learn/shares-outstanding-vs-float), stated in **U.S. dollars**.

One detail matters here. Many companies have **more than one class of shares**, sometimes under separate
tickers. Where that happens, the classes are **combined** so the company is counted **once**, at its full
size, rather than split into two smaller entries. That keeps the ranking a list of companies, not a list
of tickers. For a worked example, see
[dual-class shares and market cap](https://www.marketcaplens.com/learn/dual-class-shares-and-market-cap).

## Where does the data come from?

Prices, share counts, and fundamentals come from a market-data provider and are normalized into a single
daily snapshot. Every figure on a company page or in the ranking traces back to that snapshot, so the
ranking, the [sector pages](https://www.marketcaplens.com/sectors), and the individual company pages all agree with one another.

## How often does it update?

The underlying data refreshes **multiple times every trading day**, and the ranking is rebuilt from the
latest snapshot. Each page shows an **"as of" date** so you always know how current the figures are.
Prices can be delayed by anywhere from a few minutes to a few hours, so treat the ranking as a research
and comparison tool rather than a live trading feed.

## What the ranking is, and isn't

It is a consistent, transparent way to compare companies by size and to browse the market by
[sector](https://www.marketcaplens.com/sectors) or curated groups like the [Magnificent 7](https://www.marketcaplens.com/magnificent-7-stocks). It is not a
buy-or-sell list. Size says nothing about whether a company is a good investment; see
[the size tiers](https://www.marketcaplens.com/learn/market-cap-size-tiers) for what large versus small tends to imply, and
[what a sector is](https://www.marketcaplens.com/learn/what-is-a-sector) for industry groupings — and nothing more.

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*For general education only. Nothing here is investment advice.*

## Frequently asked questions

### How does MarketCapLens rank companies?

It ranks U.S.-listed companies above a minimum market-cap threshold by their market cap in U.S. dollars, combining a company's multiple share classes so it is counted once.

### How often is the ranking updated?

The underlying data refreshes multiple times every trading day and the ranking is rebuilt from the latest snapshot. Each page shows an 'as of' date so you know how current it is.