| Updated: 11:59 p.m. After an initial hiccup Thursday, Provo’s Qualtrics International blew past Utah’s previous record for a stock debut, amassing an astounding $1.55 billion on its first day as a publicly traded company. At the market’s close, shares in the customer-experience software vendor’s initial public offering had vaulted to $45.5 dollars a share — nearly 52% above its opening price of $30. (It later dipped slightly in after-hours trading.) The premiere solidified it as the largest IPO ever to emerge from the Beehive State, more than doubling the take by the previous record holder: Salt Lake City-based nuclear waste processor EnergySolutions, which brought in $690 million in 2007.