Rigetti Computing's stock experienced a significant 6.21% decline overnight. The quantum computing company's shares came under pressure during the pre-market session on Thursday.

The drop was attributed to broad weakness in the semiconductor sector, which faced systemic selling pressure, dragging down related stocks including Rigetti. Furthermore, the stock was impacted by significant profit-taking activity following a rapid appreciation of over 50% between May 21 and May 22. This prior surge was triggered by the U.S. Commerce Department's announcement of approximately $2 billion in funding for nine quantum computing companies, including Rigetti, in which the government took equity stakes.

The overnight decline represents a continuation of the post-rally digestion, as investors locked in gains after the substantial upward move. The broader quantum computing sector also showed weakness, contributing to the downward pressure on Rigetti's shares.