Large-cap technology and AI-linked stocks dominated Wall Street's top gainers list last week as investors rotated into companies tied to semiconductor demand, cybersecurity and digital infrastructure growth.



Strong earnings, upbeat guidance, analyst upgrades and growing optimism around AI spending helped drive momentum across several market-leading names.



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



Tower Semiconductor Ltd. (NASDAQ:TSEM) jumped 28.48% this week after the company reported better-than-expected first-quarter financial results and issued second-quarter sales guidance with its midpoint above estimates. Also, the company announced that it had signed a $1.3 billion silicon photonics contract. Multiple analysts raised their price forecasts on the stock.



Applied Optoelectronics, Inc. (NASDAQ:AAOI) increased 25.36% this week. The latest price action follows a bullish analyst reset: Rosenblatt reiterated a Buy and raised its price forecast to $220.00 from $140. Also, the firm entered into an equity distribution agreement to sell up to $600 million in common stock through Raymond James &amp; Associates and Needham &amp; Company



Venture Global, Inc. (NYSE:VG) gained 22.99% this week after the company reported better-than-expected first-quarter financial results.



Nebius Group N.V. (NASDAQ:NBIS) jumped 21.25% this week. Shares are trading higher after the company reported first-quarter financial results and raised its contracted power guidance.



Cisco Systems, Inc. (NASDAQ:CSCO) increased 22.4% tis week after the company reported better-than-expected third-quarter financial results, issued fourth-quarter guidance above estimates and raised its FY26 guidance. The company announced a restructuring plan to boost its AI, security and silicon investments. Multiple analysts raised their price forecasts on the stock.



Lumen Technologies, Inc. (NYSE:LUMN) jumped 19.71% this week.



Rocket Lab Corporation (NASDAQ:RKLB) increased 18.08% this week. Traders continue to lean into the company’s strong first‑quarter report.



Aramark (NYSE:ARMK) jumped 17.72% this week after the company reported better-than-expected second-quarter financial results.



Palo Alto Networks, Inc. (NASDAQ:PANW) gained 16.76% this week. Multiple analysts raised their price forecast on the stock.



Astera Labs, Inc. (NASDAQ:ALAB) soared 18.35% this week.



Cisco Systems, Inc. (NASDAQ:CSCO) spiked 22.40% this week after the company reported upbeat third-quarter results. Also, multiple analysts raised their price forecast on the stock.

AAOI

PANW

TSEM

Last week, large-cap technology and AI stocks led the market gains, driven by strong earnings and analyst optimism. Tower Semiconductor surged 28.48% after positive Q1 results and a $1.3 billion contract. Other notable gainers included Applied Optoelectronics (+25.36%), Venture Global (+22.99%), and Cisco Systems (+22.4%) following better-than-expected financial results and raised guidance. Overall, investor momentum was fueled by semiconductor demand and AI spending.

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Applied Optoelectronics

Palo Alto Networks

Tower Semicon

Invesco Semiconductors ETF

Defiance Daily Target 2X Long RKLB ETF

Direxion Daily CSCO Bull 2X Shares

Leverage Shares 2X Long PANW Daily ETF

VanEck Semiconductor ETF

SPDR S&P Semicon

ISHRS S&P Glb It

Direxion Semicon Bull 3X

First Trust Nasdaq Food & Semicon

iShares Semiconductor ETF

Direxion Daily PANW Bull 2X Shares

Venture Global

Nebius

Cisco

Lumen Tech

Rocket Lab

Aramark

Astera Labs

Rocket Lab, Tower Semiconductor, And Palo Alto Are Among Top 10 Large-Cap Gainers Last Week (May 11-May 15): Are the Others in Your Portfolio?