This week, which stocks led the S&P 500 higher? The Weekly Winners column tracks market-moving trends, highlighting the strongest sector momentum, top-performing stocks, and key thematic drivers behind price action.

Below are the top 10 S&P 500 gainers for the week ended June 12:

SanDisk Soars on Continued AI Memory Optimism

SanDisk surged 26.98%, topping the S&P 500 leaderboard this week.

The rally was driven by continued optimism around tightening AI-driven memory supply conditions, particularly in NAND and high-density storage markets used in AI data centers. Investor sentiment was further supported by multiple analyst price target upgrades during the week, reinforcing expectations of a sustained memory upcycle.

The broader narrative centers on rising demand from hyperscale AI infrastructure, where storage intensity continues to increase alongside compute expansion.

Intel Jumps on AI Foundry and Advanced Chip Manufacturing Narrative

Intel jumped 25.61% this week.

Shares rallied after reports highlighted potential major AI-related manufacturing engagements, including speculation that leading tech firms are evaluating Intel’s advanced process technologies for future AI chip production.

The move reinforced investor confidence in Intel’s long-term foundry strategy, as the company positions itself as a potential alternative supplier in the global advanced semiconductor manufacturing landscape.

Applied Materials and Lam Research Rise on AI Capex Cycle Strength

Applied Materials gained 25.22% this week, while Lam Research rose 20.95%.

Both stocks moved higher alongside broader expectations that AI-driven semiconductor capital expenditures remain robust, as chipmakers and hyperscalers continue expanding advanced manufacturing capacity.

The sector remains one of the key beneficiaries of the ongoing AI infrastructure buildout.

Casey's General Stores Stock Jumps After Q4 Earnings Crush Estimates

Casey's General shares jumped 17.49% this week.

Casey’s reported earnings per share of $4.37, beating the consensus estimate of $3.31. In addition, it reported revenue of $4.57 billion, beating the consensus estimate of $4.30 billion.

Inside same-store sales were up 5.5% compared to the prior year — and 7.4% on a two-year stack basis — with an inside margin of 42.4%. Total inside gross profit increased 10.5% to $643.4 million compared to the prior year, led by strong performance in prepared foods and non-alcoholic beverages.

Micron Advances on AI Memory Supply Tightness

Micron Technology climbed 13.61% this week.

The stock continued to track strength in the memory complex, supported by ongoing investor focus on tight supply conditions in DRAM and NAND markets. The AI buildout is increasingly seen as a structural driver of memory demand.

Robinhood Gains on Sustained Retail Trading Activity

Robinhood rose 13.00% this week.

The stock benefited from continued strength in retail trading engagement across equities, options, and crypto-linked activity.

Teradyne Climbs on AI-Driven Semiconductor Testing Demand

Teradyne advanced 12.65% this week.

The company gained alongside broader semiconductor strength, as investors priced in long-term demand growth for chip testing and automation equipment.

JM Smucker Rises After Earnings-Driven Strength

JM Smucker gained 12.51%.

The consumer staples company moved higher following earnings results that highlighted resilient demand trends and stable pricing power.

Amphenol Advances on AI Infrastructure Connectivity Demand

Amphenol rose 10.80%.

The company continued to benefit from expectations of long-term growth in data center connectivity and high-speed interconnect solutions.

Market Theme: AI Infrastructure and Semiconductor Cycle Dominate

A key takeaway from this week’s leaderboard is the continued dominance of the AI infrastructure and semiconductor investment cycle.

Memory (SanDisk, Micron), semiconductor equipment (Applied Materials, Lam Research), and chip-related ecosystem names (Intel, Teradyne, Amphenol) collectively accounted for a significant portion of top weekly gainers.

Outside the AI theme, retail trading activity (Robinhood) and consumer staples resilience (JM Smucker) provided additional support in a broadly constructive risk environment.

Conclusion

This week’s price action reinforces a clear market structure: capital continues to rotate toward companies exposed to the AI buildout across memory, equipment, manufacturing, and connectivity layers.

As the AI investment cycle progresses, semiconductor-linked equities remain at the center of market leadership.