OSS ▲ +3.2% - One Stop Systems, Inc. $OSS has won a roughly $400,000 award from a major U.S. defense contractor to support missile defense modeling and simulation for the U.S. Missile Defense Agency. One Stop Systems rose 3.2% after announcing a roughly $400,000 contract award from a major U.S. defense contractor to support missile defense modeling and simulation work for the U.S. Missile Defense Agency. The defense-focused contract win signals continued demand for the company's specialized computing solutions in the government sector. 16-SEP-2026 08:24 AM ET