CNBC Daily Open: U.S. waives Iran sanctions; rotation out of megacap techs

Investors are shifting focus away from megacap tech stocks, which pulled down the S&P and Nasdaq despite positive news about the U.S. temporarily lifting Iran oil sanctions for 60 days. This move by the U.S. could potentially impact global oil markets and international relations, but the market's reaction suggests investors are more concerned with tech sector performance. The rotation out of big tech stocks could signal a shift in investor sentiment, possibly driven by concerns over high valuations and regulatory scrutiny.