In at least one corner of the artificial intelligence market, sentiment has turned decidedly negative. Broadcom, CoreWeave and Oracle, three companies intimately tied to the AI infrastructure buildout, all had another rough day on Wall Street on Monday after selling off sharply last week. While the three stocks are all still solidly up for the year — CoreWeave held its market debut in March — the most recent trend suggests that investors are concerned about whether the returns on investment will ever justif ...