(Reuters) -U.S. stock futures struggled for traction on Friday, after a wobbly week for Wall Street amid concerns about the economy and sky-high valuations in the technology sector.

The three main U.S. indexes ended sharply lower in the previous session, with the tech-heavy Nasdaq falling almost 2% after Wall Street executives earlier this week warned a market correction could be on the way.

Optimism around artificial intelligence has pushed markets to all-time highs this year, but concerns over monetization of the technology and circular spending within the industry has dampened enthusiasm for U.S. stocks in recent days.

“Markets are grappling with the excitement surrounding how impactful (and ideally profitable) these technologies could be in the future, tempered by the concern that t

See Full Page