Investing.com -- Intel's microprocessor market share has fallen to its lowest level since 2002, according to Citi analysts, who cited new data from Mercury Research on 4Q24 microprocessor shipments.

Intel’s overall market share declined 104 basis points quarter-over-quarter (QoQ) to 67.4%, marking "the lowest in our model’s history dating back to 2002."

AMD (NASDAQ: AMD) and ARM both gained market share at Intel’s expense. AMD increased its overall microprocessor unit share by 53 basis points QoQ to 22.1%, with gains in the notebook and server segments.

"AMD’s notebook MPU unit share was up 102 basis points QoQ from 19.8% in 3Q24 to 20.8% in 4Q24," Citi noted. However, AMD lost ground in the desktop segment, where its share dropped 144 basis points QoQ to 25.3%.

ARM is also said to have made gains, increasing its overall microprocessor market share by 51 basis points QoQ to 10.5%. The firm saw the most traction in notebook processors, where its share climbed 96 basis points QoQ to 12.3%.

However, Citi noted that ARM experienced slight declines in desktop and server MPU share.

While Intel (NASDAQ: INTC) lost share overall, it did see a gain in the desktop segment. "Intel’s desktop MPU share was up 166 basis points QoQ from 66.4% in 3Q24 to 68.1% in 4Q24," Citi reported.

However, this was reportedly overshadowed by losses in the notebook and server categories, where Intel's share dropped to 66.9% and 69.8%, respectively.

Total (EPA:TTEF) microprocessor shipments were up 10.8% QoQ, well above seasonal expectations, which Citi attributed to "evidence of a CPU inventory build." Despite these market shifts, Citi maintained Neutral ratings on both Intel and AMD.