AMD shares surged about 13 percent last week, briefly lifting its market capitalisation above $1 trillion. CNBC reported on Sept. 28 that Jim Cramer said the spread of AI agents could become an additional growth driver for AMD and that the recent uptrend was unlikely to be easily broken.

AMD briefly topped a $1 trillion market value intraday on Sept. 28 but later fell back below that level. Its gain for September alone reached about 30 percent. The recent surge was partly influenced by Meta's launch of its personal AI agent platform, Muse.

Cramer said investors' focus this year has shifted from AI model training to inference and agents. He said running useful AI agents requires more CPUs, which could sharply lift CPU demand. He assessed that AMD is still maintaining its lead in this market.

AMD's current standing coincides with a turnaround since Chief Executive Lisa Su (리사 수) took the role. When Su became CEO in October 2014, AMD's market capitalisation was just over $2.5 billion, and the company was losing market share to Intel. AMD shares have since risen more than 18,000 percent, and the company has steadily increased share again by refocusing on its CPU business.

AMD has expanded its presence not only in CPUs but also in the GPU market used for AI workloads. Major AI investors including Meta and OpenAI have pledged to adopt AMD GPUs. Cramer said the AI chip market is large enough to accommodate several companies at the same time.

He said Nvidia remains the strongest player in AI chips, but assessed that AMD is also generating large profits. He added that AMD has an opening because Nvidia cannot meet all of the surging demand. He said the possibility of a pullback has increased after the recent sharp rise, but the long-term opportunity remains.