As the AI frenzy drives US stock markets higher, one tech company’s shares have jumped almost 50% this year, outperforming the likes of Nvidia, Microsoft, and Meta — all while it celebrates its 30th anniversary.Dot-com pioneer eBay, which sold its first item (a broken laser pointer) months after Amazon shipped its first book, has lost ground as the competition in e-commerce has proliferated since then. But under CEO Jamie Iannone, it is repositioning itself through an unusual combination of retu...