After the bell, a mix of earnings and guidance developments produced divergent moves across individual equities. Semiconductor supplier Marvell Technology led the gainers among the group, while apparel retailer GAP saw a notable decline after investors regarded its quarterly update as lackluster. Other names that moved included industrial-software and IoT provider Samsara, insurance-software vendor Guidewire, warehouse retailer Costco, and medical-products company Cooper Companies.
Marvell Technology (MRVL) climbed 9% after reporting fourth-quarter fiscal 2026 net revenue of $2.219 billion. That result exceeded the mid-point of the company’s guidance provided on December 2, 2025 by $19.0 million, a performance that supported the stock’s after-hours advance.
Samsara Inc (IOT) rallied 13% as revenue for the quarter reached $444.3 million, topping the consensus estimate of $422.29 million. The top-line beat was the primary catalyst cited for the stock’s strong after-hours move.
GAP (GAP) retreated 8% after its quarterly results were characterized as lackluster. The company reported comparable sales growth of 3%, a figure that did not prevent investors from selling the shares following the release.
Guidewire Software (GWRE) inched higher, rising 1% after the company beat expectations on both revenue and earnings. The modest share-price response followed the company’s better-than-expected top- and bottom-line performance.
Costco (COST) shares were essentially flat in after-hours trade despite a small earnings beat. The company reported second-quarter EPS of $4.58, $0.03 better than the analyst estimate of $4.55. Quarterly revenue came in at $69.6 billion versus the consensus estimate of $69.25 billion.
Cooper Cos. (COO) rose 8% after reporting first-quarter EPS of $1.10, which exceeded the analyst estimate of $1.03 by $0.07. The clear upside to consensus in earnings supported the stock’s gain.
Separately, an investment-research product noted in company commentary evaluates Costco alongside thousands of other companies each month using more than 100 financial metrics. That product, ProPicks AI, is described as using AI to generate stock ideas by assessing fundamentals, momentum and valuation without bias. The product’s promotional material cites notable past winners that include Super Micro Computer (+185%) and AppLovin (+157%), and it invites readers to see whether Costco currently features in any of its strategies or whether there are better opportunities in the same space.