GCT Semiconductor Holding, Inc. (NYSE:GCTS) shares are up during Monday’s premarket session. Last week, the company reported a significant increase in revenue and 5G chipset shipments.

Q1 Revenue Surge And 5G Shipments

The company reported EPS loss of 15 cents, missing the consensus estimate loss of 12 cents. Meanwhile, revenue came in at $1.92 million, slightly above analyst expectations of $1.76 million.

In the first quarter of 2026, GCT Semiconductor reported a 287% increase in total revenue compared to the same period last year. This is driven by a 58% sequential increase to 3,000 units in 5G chipset shipments.

It reflects an ongoing commercialization ramp expected to accelerate through the year as additional customer orders are secured.

Gross margin improved significantly to 49.3%, up from 17.7% a year earlier, driven by a higher mix of service revenue and increased contribution from 5G platform sales during the quarter.

Key Development & Guidance

The company notes that first quarter represents an early phase of commercialization, ...