One of this week's top breakout sensations is still trending upward after an impressive surge. Lumen Technologies (NYSE:LUMN) stock began skyrocketing after markets opened yesterday. The telecommunications firm had reported several key deals with prominent tech companies involving its artificial intelligence (AI) technology. In just 24 hours, Lumen has emerged as a key AI stock that investors can't help but notice. While some wondered if LUMN stock would quickly fall back down, so far, it hasn't happened. S ...