This week, which stocks lagged or dragged? Weekly Winners column keeps up with market trends, helping Tigers sort out the week's hottest sectors, stock winners and important news.

Below are the top 10 S&P 500 stock gainers for the week ended May 15:

Cisco Stock Surges on Surging AI Orders, as Company Says It’s Cutting Almost 4,000 Jobs

Cisco shares soared after the networking company issued results and guidance that topped Wall Street’s projections.

The company said it’s cutting its workforce this quarter by fewer than 4,000 jobs, representing less than 5% of total employees.

Palo Alto Shares Notched Record-High Close, Analysts See Benefits to Identity Security Pivot

Shares of Palo Alto Networks rose as analysts remain optimistic about the cybersecurity company's pivot to focus on identity and agentic identity security. Shares are up 32% year to date.

Oppenheimer analysts said the CyberArk Impact 2026 conference advanced the company's strategy, with CyberArk rebranding as Idira and positioned as a core technology that underpins a broader platform approach.

Zebra Stock Soars on Earnings. The Automation Business Is Turning.

Zebra Technologies reported better-than-expected first-quarter numbers and raised full-year guidance.

Business is looking up for the provider of automation technology.

Tuesday morning, Zebra reported earnings per share of $4.75, up 18.2% year over year, from sales of $1.5 billion, up 14.3% year over year. Wall Street was looking for $4.25 and $1.5 billion, respectively, according to FactSet.

Coherent Stock Rise as the AI Networking Trade Stays Hot

Optical networking stock Coherent was on the rise this week, continuing one of the hottest artificial-intelligence trades of 2026.

Coherent CEO Jim Anderson making the cut for Trump's China visit also appeared to help sentiment. The president said in a social media post that he would ask China's Xi Jinping to "'open up' China so that these brilliant people can work their magic."