As the Q1 earnings season wraps, let’s dig into this quarter’s best and worst performers in the semiconductor manufacturing industry, including Amkor (NASDAQ:AMKR) and its peers.

The semiconductor industry is driven by demand for advanced electronic products like smartphones, PCs, servers, and data storage. The need for technologies like artificial intelligence, 5G networks, and smart cars is also creating the next wave of growth for the industry. Keeping up with this dynamism requires new tools that can design, fabricate, and test chips at ever smaller sizes and more complex architectures, creating a dire need for semiconductor capital manufacturing equipment.

The 14 semiconductor manufacturing stocks we track reported a mixed Q1. As a group, revenues missed analysts’ consensus estimates by 0.7% while next quarter’s revenue guidance was 2.9% below.

Luckily, semiconductor manufacturing stocks have performed well with share prices up 13.2% on average since the latest earnings results.

Amkor (NASDAQ:AMKR)

Operating through a largely Asian facility footprint, Amkor Technologies (NASDAQ:AMKR) provides outsourced packaging and testing for semiconductors.

Amkor reported revenues of $1.32 billion, down 3.2% year on year. This print exceeded analysts’ expectations by 3%. Overall, it was a strong quarter for the company with a solid beat of analysts’ adjusted operating income estimates and an impressive beat of analysts’ EPS estimates.

Amkor scored the biggest analyst estimates beat of the whole group. The stock is up 17% since reporting and currently trades at $20.45.

Is now the time to buy Amkor? Access our full analysis of the earnings results here, it’s free.

Best Q1: FormFactor (NASDAQ:FORM)

With customers across the foundry and fabless markets, FormFactor (NASDAQ:FORM) is a US-based provider of test and measurement technologies for semiconductors.

FormFactor reported revenues of $171.4 million, up 1.6% year on year, outperforming analysts’ expectations by 0.9%. The business had a strong quarter with an impressive beat of analysts’ EPS estimates and a solid beat of analysts’ adjusted operating income estimates.

The market seems happy with the results as the stock is up 24.2% since reporting. It currently trades at $34.87.

Is now the time to buy FormFactor? Access our full analysis of the earnings results here, it’s free.

Weakest Q1: Photronics (NASDAQ:PLAB)

Sporting a global footprint of facilities, Photronics (NASDAQ:PLAB) is a manufacturer of photomasks, templates used to transfer patterns onto semiconductor wafers.

Photronics reported revenues of $211 million, down 2.8% year on year, in line with analysts’ expectations. It was a disappointing quarter as it posted revenue guidance for next quarter missing analysts’ expectations and a significant miss of analysts’ EPS estimates.