Double-Digit Disaster: 10 Big Names Fall Off the Cliff

Ten stocks finished Thursday’s trading session on a lackluster note, losing as much as double digits, primarily due to dismal earnings performance and a weaker outlook.

The stocks bucked a mostly optimistic broader market, with the tech-heavy Nasdaq and the S&P 500 both up by 0.18 percent and 0.07 percent, respectively. In contrast, the Dow Jones was down by 0.70 percent.

In this article, we name Thursday’s 10 worst-performing stocks and detail the reasons behind their drop.

To compile the list, we focused exclusively on stocks with at least $2 billion in market capitalization and over 5 million shares in trading volume.

10. C3.ai, Inc. (NYSE:AI)

C3 AI snapped a two-day rally on Thursday, losing 10.84 percent to close at $26 apiece as investors repositioned portfolios following its chief executive’s announcement that he was stepping down from his post.

In a statement, C3.ai, Inc. (NYSE:AI) said that CEO Thomas Siebel has tendered his resignation due to health reasons, effective upon a successor assuming his post.

“After being diagnosed with an autoimmune disease in early 2025, I have experienced significant visual impairment,” he said.

“For C3 AI to reach its full potential—which I believe is spectacular—the board and I have initiated a search for a new CEO who can take the company to the next level of growth and success. I will remain fully engaged as Chief Executive Officer of C3.ai until such time as the C3.ai board appoints my successor, after which I will continue in the role of Executive Chairman, focusing on strategy, product innovation, strategic partner and customer relationships,” he noted.

Meanwhile, an analyst from Wedbush said that the chief’s resignation presented an opportunity for other firms to acquire C3.ai, Inc. (NYSE:AI).

Wedbush gave C3.ai, Inc. (NYSE:AI) an “outperform” rating and a price target of $35 apiece.