On Wednesday shares of little-known European chipmaker X‑Fab Silicon Foundries
SE jumped more than 70% after heavy promotion by a popular X account. The
account, Serenity, which lists over 400,000 followers, posted that it had taken
a position in Paris-listed X‑Fab, which operates six semiconductor manufacturing
sites worldwide; the post drew more than 500,000 views and sparked a retail
trading rush that drove the stock up as much as 77%. By the afternoon the stock
remained up over 30%, trading volume was roughly 17 times its three‑month
average and the security was halted several times because of sharp price swings.
“We have noted recent increases in the company’s share price and trading
volume,” X‑Fab CEO Damian Mark said, adding the company is not aware of any
material, non‑public developments that should be disclosed. This is not the
first time this year European tech stocks have surged after Serenity’s
recommendations; the account’s profile describes the user as both an
“AI/semiconductor supply‑chain analyst” and an “AI research scientist.” X‑Fab is
trading around €12, more than double the analysts’ average PT (≈€5.5); of eight
analysts covering the name, only one rates it Buy.
