These ten large-cap stocks were the worst performers last week. Are they a part of your portfolio?

Astera Labs, Inc. (NASDAQ:ALAB) decreased 23.74% this week after the company reported fourth-quarter financial results. Tech stocks are also lower after Cisco Systems issued a cautious margin outlook, reigniting investor concerns about the durability of profits tied to the AI trade.

Pinterest, Inc. (NYSE:PINS) fell 21.73% this week after the company reported worse-than-expected fourth-quarter financial results and issued first-quarter sales guidance below estimates. Also, multiple firms downgraded the stock and lowered their respective price targets.

Medpace Holdings, Inc. (NASDAQ:MEDP) slumped 20.69% this week after the company reported fourth-quarter financial results. Also, multiple analyst firms lowered their respective price targets on the stock.

Zillow Group, Inc. (NASDAQ:Z) decreased 20.89% this week after the company reported mixed fourth-quarter financial results.

Karman Holdings Inc. (NYSE:KRMN) fell 20.96% this week.

AST SpaceMobile, Inc. (NASDAQ:ASTS) decreased 17.9% this week after the company announced a $1 billion convertible senior notes offering.

Ryan Specialty Holdings, Inc. (NYSE:RYAN) slumped 17.90% this week after the company reported worse-than-expected fourth-quarter financial results. The company announced a $300 million buyback.

DraftKings Inc. (NASDAQ:DKNG) decreased 18.65% this week after the company reported fourth-quarter financial results and issued FY26 sales guidance below estimates. Also, multiple analysts lowered their price forecasts for the stock.

Flutter Entertainment (NYSE:FLUT) fell 18.88% this week amid sympathy with DraftKings after the company reported fourth-quarter financial results.

CBRE Group (NYSE:CBRE) decreased 15.55% this week after the company reported better-than-expected fourth-quarter adjusted EPS results and issued FY26 adjusted EPS guidance with its midpoint above estimates.