How the rankings were determined


The Houston Chronicle 100 ranking is based on the financial results of publicly traded companies in the Houston area, which have been collected and analyzed by S&P Global Market Intelligence. Other graphics in this special section are based on information from many sources.

The Chronicle developed the ranking criteria, which reflect performance as reported by public companies to the United States Securities and Exchange Commission.

The tables used figures reported for calendar years 2019 and 2020, or as close to the calendar year as possible for companies with different fiscal years or reporting schedules. Data may reflect restatements for accounting changes, acquisitions or discontinued operations.

Further information was gathered by Chronicle researcher Katherine Feser, who surveyed companies to determine the region’s largest employers, private businesses, hospitals and law firms.

Chronicle 100 scores

Companies based in the Houston area were ranked by a score based on four categories for 2020: total revenue, earnings per share growth, annual revenue growth, and year-on-year total return for shareholders on a basis of reinvested dividends.

The companies were classified in each of the criteria, each category having the same weight. The best possible score in each category is 1. To calculate the overall score, the four rankings were added and then divided by 4. In the event of a tie, the change in earnings per share was used to break it.

To be eligible, a company must have reported income for 2020 on the basis of diluted net income per share before extraordinary items.

The company’s stock price must have been greater than $ 1 per share as of April 27, 2021, and it must have been traded throughout 2020. Companies must have had total sales greater than $ 5 million for 2020 and $ 2.5 million for 2019.

The Chronicle 100 was derived from a list of 56 companies that met the criteria. The other public enterprise organization charts are based on a set of 151 enterprises.

Kevin Kelly led research for S&P Global Market Intelligence. He can be reached at 303-721-4525 or at [email protected] For more information, visit

General criteria

To qualify for charts based on the financial performance of publicly traded companies, a company must be listed on a major stock exchange – New York, Nasdaq, or NYSE Amex – and be headquartered in the Houston area. Some companies with two head offices, main administrative offices or major operations in the region were taken into account.

Companies headquartered abroad were included if their CEOs were based in the Houston area.

Revenue has been defined as net sales for 2020. In most cases, sales exclude excise taxes and other non-operating revenue.

For banks and savings and credit unions, turnover is equal to total current operating income and net income before securities taxes.

For insurance companies, turnover is equal to the sum of earned premiums and net investment income. It excludes equity in other investments and currency adjustments.

The growth in earnings per share was based on the percentage change in earnings per share before special items. EPS growth may include one-time gains or losses, such as profits on sales of assets, as long as they are reported pre-tax in the income statement.

When the previous year’s earnings per share was negative, the percentage change was calculated using the absolute difference.

The biggest companies

This chart ranks companies based on their annual revenue. To be considered, companies had to be listed on December 31, 2020 and have met other criteria for the Chronicle 100 board review.


This chart shows companies tracked by S&P Global Market Intelligence that have made a first public offering of shares since 2020. Current market capitalization may include additional shares issued in subsequent offerings and / or private placements.

Increase in income

The revenue growth chart ranks businesses based on the percentage of annual revenue gain in 2020.


S&P Global Market Intelligence has ranked bank holding companies and commercial banks based on deposits in the Houston area as of June 30, 2020. Data is pro forma for acquisitions that were completed or announced as of May 11.

Automotive sales

New vehicle models and dealer sales volumes were provided by TexAuto Facts, published by InfoNation, Inc. of Houston. The report is compiled from vehicle title records kept by the Texas Department of Motor Vehicles.

Communities and home builders

Sales figures for home builders and housing starts for more active communities were provided by Zonda. Homebuilders were ranked based on sales in the Houston area that closed in 2020. The most active communities were ranked based on housing starts in 2020.


Companies were ranked by the number of full-time and part-time workers they employ in Harris, Montgomery, Liberty, Chambers, Galveston, Brazoria, Fort Bend, Waller, Austin and San Jacinto counties.

The companies provided the numbers, some of which are estimates, for a Chronicle survey. Some large employers are not on the list because they do not provide employment figures by city or have refused to participate.

Government entities are generally not included. Some public health establishments are part of the survey.

A separate chart on the world’s top employers provided by S&P Global Market Intelligence ranks Houston state-owned companies based on the number of employees globally in 2020.


Hospitals in the area have provided information about their operations in Houston.

Law firms

The table of top law firms is based on a Chronicle survey of firm operations.

Private companies

The companies were ranked by revenue based on a Chronicle survey. In some cases, companies provided estimates. Car dealerships, banks, and law and doctor firms were not included.

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