FormFactor, Amkor, and Teradyne Stocks Trade Up, What You Need To Know

What Happened?

A number of stocks jumped in the afternoon session after investor optimism around artificial intelligence fueled broad market gains. 

Technology stocks with a focus on artificial intelligence once again led the market higher, boosting the Nasdaq and S&P 500. Companies at the forefront of the AI boom, such as Nvidia and Broadcom, saw significant jumps in their share prices. The rally reflects a renewed belief among investors in the transformative potential of AI technology to drive future growth and productivity. 

The rally was further supported by a surprise cooling in the November consumer price index (CPI) report, which triggered market pricing for additional rate cuts in the coming year. This created a more favorable environment for growth-oriented companies.

The stock market overreacts to news, and big price drops can present good opportunities to buy high-quality stocks.

Among others, the following stocks were impacted:

• Semiconductor Manufacturing company FormFactor (NASDAQ:FORM) jumped 2.9%. Is now the time to buy FormFactor? Access our full analysis report here, it’s free for active Edge members.
• Semiconductor Manufacturing company Amkor (NASDAQ:AMKR) jumped 3.2%. Is now the time to buy Amkor? Access our full analysis report here, it’s free for active Edge members.
• Semiconductor Manufacturing company Teradyne (NASDAQ:TER) jumped 3.1%. Is now the time to buy Teradyne? Access our full analysis report here, it’s free for active Edge members.

Zooming In On Amkor (AMKR)

Amkor’s shares are very volatile and have had 27 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 7 days ago when the stock dropped 5.7% on the news that investors grew concerned over the profitability timeline of artificial intelligence (AI) investments following financial reports from industry giants. 

Fears of an AI bubble resurfaced after Oracle reported higher-than-expected capital spending alongside lower revenue and operating income. The news sent Oracle's shares plummeting and created a ripple effect across the AI landscape, dragging down chipmakers like Nvidia and Micron Technology. The negative sentiment was so pervasive that even Broadcom, which posted better-than-expected results, saw its stock decline. The market reaction signals investor anxiety about when the massive capital expenditures on AI infrastructure will translate into tangible profits, leading to a broader rotation out of big tech names.

Amkor is up 55.7% since the beginning of the year, but at $40.51 per share, it is still trading 13.9% below its 52-week high of $47.04 from December 2025. Investors who bought $1,000 worth of Amkor’s shares 5 years ago would now be looking at an investment worth $2,700.

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