On May 27th (Wednesday), shares of European chipmaker X-Fab Silicon Foundries SE experienced a meteoric rise, with gains at one point soaring past 70%. This dramatic surge was sparked by a glowing endorsement from a well-known social media influencer, Serenity. Serenity, an account with a following exceeding 400,000, announced on platform X that it had invested in X-Fab. This post, which rapidly amassed over 500,000 views, ignited a wave of retail investor enthusiasm, propelling X-Fab's stock price to a staggering 77% increase at its peak. By the afternoon, the stock remained up by more than 30%, with trading volume surging to roughly 17 times the three-month average. Due to the extreme volatility, trading in the stock was halted multiple times throughout the day. X-Fab CEO Rudi De Winter acknowledged the company's awareness of the spike in share price and trading volumes but stated that they were unaware of any significant developments warranting disclosure. This incident marks the second time this year that Serenity's recommendation of European tech stocks has triggered a surge in their prices. According to its profile, Serenity serves as both an "AI/semiconductor supply chain analyst" and an "AI research scientist." Currently, X-Fab's stock price hovers around 12 euros, more than double the average analyst target price of approximately 5.5 euros. Data reveals that among the eight analysts tracking the stock, only one has issued a "buy" recommendation.