Quantinuum stock debuts with a 13% pop, then fades, but shares remain green for the first trading day.

Quantinuum has reportedly increased the size and pricing of its IPO, raising its potential valuation to approximately $14.3 billion.

BROOMFIELD, Colo., June 3, 2026 /PRNewswire/ -- Quantinuum Inc. ('Quantinuum') today announced the pricing of the upsized initial public offering of 28,000,000 shares of its Class…