The figure for 1Q2019 was 36.97 units, compared to 37.27 units for the corresponding quarter in 2018, a drop of just 0.8%, the company said.
American brands had been largely responsible for this small drop, TrendForce said, pointing out that HP had continued to hold its top spot for the 12th consecutive quarter, shipping 9.23 million units which was 2.6% more than the corresponding quarter in 2018.
Dell was second with 7.57 million units, which was more than 22% higher than its shipments in 1Q2018.
"Despite the off-season, Dell still took large amount of orders in anticipation of and preparation for the US-China trade war in 1Q this year, reaching 7.57 million units in shipments 1Q, bringing both QoQ and YoY growth upwards of 22%.
"Furthermore, Dell's efforts to expand the number of sales channels into Europe last year began to pay off starting at the end of 1Q this year. If Dell manages to maintain this strong performance, it may reach a new height in annual shipments."
Lenovo took the third spot for the quarter with 6.67 million units, a drop of 15.5% year-on-year. "Lenovo adopted AMD CPUs in nearly 30% of its new notebooks and is currently the brand that has made the greatest transition to AMD CPUs," TrendForce commented.
"However, the market's low acceptance of AMD CPUs and the question of whether end customers are buying remains to be a great challenge for Lenovo."