Investors would've seen a lofty return on their investment in the past 12 months. One stock in particular that's had a great past 12 months is BigBear.ai (BBAI 0.85%). BigBear.ai is an AI company specializing in decision intelligence in global logistics and supply chains, cybersecurity, and autonomous systems. In the past 12 months (using Sept. 30, 2024, as the starting date), BigBear.ai's stock is up 323% -- nearly 20 times more than the S&P 500's growth during that time. Much of BigBear.ai's growth in the past 12 months can be attributed to positive news from its government and defense contracts, its VeriScan biometric system, and broader AI enthusiasm.