AMREP, through its subsidiaries, is engaged in the real estate business. The company conducts its real estate business primarily in the City of Rio Rancho and certain adjoining areas of Sandoval County, NM. The company sells both developed and undeveloped lots to national, regional and local homebuilders, commercial and industrial property developers and others. The company also acquires land, focusing primarily in New Mexico, after completion of market research, soil tests, environmental studies and other engineering work, a review of zoning and other governmental requirements, discussions with homebuilders or other end-users of the property and financial analysis of the project and estimated development costs.

Comstock Resources is an independent energy company engaged in the acquisition, exploration, development and production of oil and natural gas. The company's oil and gas operations are primarily concentrated in Louisiana, Texas and North Dakota. The company also has operations in other regions, primarily in New Mexico and the Mid-Continent region.

Hallador Energy is engaged in the production of steam coal from mines located in western Indiana. The company also owns a 50% interest in Sunrise Energy, LLC, a private gas exploration company with operations in Indiana. Additionally, the company owns 100% of Hourglass Sands, LLC, a frac sand mining company in the State of Colorado.

Nanophase Technologies is a skin and sun care focused company. The company produces materials for use in three business areas: personal care ingredients, including ingredients for use in sunscreens as active ingredients; fully formulated cosmetics of its own design which are developed, marketed and distributed under the Solesence? brand name by its wholly owned subsidiary Solesence, LLC; and in its advanced materials products, which includes architectural coatings, industrial coating applications, abrasion-resistant additives, plastics additives, medical diagnostics, energy (including solar control) and a variety of surface finishing technologies (polishing) applications, including optics.