Cullen/Frost Bankers, Inc. is a financial holding company, which engages in the provision of commercial and consumer banking services. It operates through the Banking and Frost Wealth Advisors segments. The Banking segment involves the operation of commercial and consumer banking services. The Frost Wealth Advisors segment includes fee-based services within private trust, retirement services, and financial management services. The company was founded by Thomas Clayborne Frost in 1868 and is headquartered in San Antonio, TX.

Nabors Industries Ltd. engages in the provision of off shore platform rigs. It also provides performance tools, directional drilling services, tubular running services, and technologies for its own rig fleet and those operated by third parties. It manufactures drilling equipment and drilling rig instrumentation. It operates through the following business segments: U.S. Drilling, Canada Drilling, International Drilling, Drilling Solutions, and Rig Technologies. The U.S. Drilling segment includes land drilling activities in the lower states and Alaska, as well as offshore operations in the Gulf of Mexico. The Canada Drilling segment operates in land-based drilling rigs in Canada. The International Drilling segment focuses on maintaining a footprint in the oil and gas market, most notably in Saudi Arabia, Algeria, Argentina, Colombia, Kazakhstan, and Venezuela. The Drilling Solutions segment offers drilling technologies, such as proprietary drilling-bit steering systems and rig instrumentation software. The Rig Technologies segment refers to the Canrig, which manufactures and sells top drives, catwalks, wrenches, draw works, and drilling related equipment, such as robotic systems and downhole tools. The company was founded by Clair Nabors in 1952 and is headquartered in Hamilton, Bermuda.