This AI underdog still faces tough near-term challenges.BigBear.ai (BBAI +7.78%), a developer of artificial intelligence (AI) modules for edge networks, went public through a merger with a special purpose acquisition company (SPAC) four years ago. The combined company's stock started trading at $9.84 per share, but it sank as low as $0.63 a year later after it missed its own bullish forecasts. It now trades at about $6.In its pre-merger presentation, BigBear.ai claimed its revenue could soar from $182 milli ...