ABM Industries Incorporated is an American corporation involved in outsourced, building maintenance and integrated facility solutions. Wholly owned subsidiaries include ABM Janitorial, Ampco System Parking, ABM Security Services and ABM Facility Services. ABM Industries Incorporated , which operates through its subsidiaries , is a leading provider of integrated facility services. With fiscal 2011 revenues of approximately $4.2 billion and nearly 100,000 employees, ABM provides commercial cleaning and maintenance, facility engineering, energy efficiency, parking and security services for... thousands of commercial, industrial, government and retail clients across the United States and various international locations. ABM's business services include ABM Janitorial Services, ABM Facility Services, ABM Engineering Services, Ampco System Parking and ABM Security Services. Founded in 1909 by Morris Rosenberg as a one-man window washing business, they took the name American Building Maintenance in 1913. In 1927, they acquired Easterday Janitorial Supply Company. His sons took over after his death. They were listed in 1945 on the American Stock Exchange.
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| NYSE symbol: | ABM |
| Founded: | 1909 |
| Headquarters: | San Francisco, California |
| Annual revenue: | $3,623,590,000 |
| Net income: | $45,430,000 |
| Operating income: | $99,510,000 |
| Market cap: | $1,000,000,000 |