Wall Street has been on what BNN Bloomberg called a "roller coaster," as a sharp sell-off in artificial-intelligence and technology stocks dragged major indexes down before they clawed back part of the losses.

According to CNN Business, the Nasdaq and S&P 500 suffered their worst day of the year as AI stocks tumbled and odds of a Federal Reserve rate hike rose. Yahoo Finance noted the Nasdaq 100 slid more than 4% in a single day on Friday, but framed the moment carefully: the broad market "isn't crashing," investors are "just fleeing technology stocks." The Associated Press reported the latest drop knocked Wall Street back to where it stood about five weeks earlier.

The pressure was global. CNBC reported SoftBank fell 6% as the tech sell-off accelerated in Asia, with Japanese chipmaker Kioxia also tumbling amid Fed worries and Iran-Israel tensions. Indian, Canadian (TSX) and other Asian markets felt the ripple effects too. Sources cited concerns over inflated AI valuations and, at times, rising oil prices; Investor's Business Daily summed up the mood by declaring "the summer swoon has arrived" and noting Oracle dived during the week.

Then came the rebound. Fortune reported AI stocks began recovering as oil prices dropped more than 3%, and PBS said Wall Street "holds steadier" as the sector recouped some of the prior week's slide. Even so, CNBC reported that even bullish investors warn of a "bumpy ride ahead." Not every name suffered: Yahoo Finance reported Palo Alto Networks, Strategy and C3.ai shares were soaring.

Why it matters: AI-linked stocks now carry enormous weight in the market, so when they swing, the savings and retirement accounts of ordinary investors swing with them.