Semiconductor packaging and testing company Amkor Technology (NASDAQ: AMKR) reported Q1 CY2026 results beating Wall Street’s revenue expectations, with sales up 27.5% year on year to $1.68 billion. On top of that, next quarter’s revenue guidance ($1.8 billion at the midpoint) was surprisingly good and 3.7% above what analysts were expecting. Its GAAP profit of $0.33 per share was 38.1% above analysts’ consensus estimates.
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Amkor (AMKR) Q1 CY2026 Highlights:
- Revenue: $1.68 billion vs analyst estimates of $1.66 billion (27.5% year-on-year growth, 1.7% beat)
- EPS (GAAP): $0.33 vs analyst estimates of $0.24 (38.1% beat)
- Adjusted EBITDA: $285 million vs analyst estimates of $258.3 million (16.9% margin, 10.3% beat)
- Revenue Guidance for Q2 CY2026 is $1.8 billion at the midpoint, above analyst estimates of $1.74 billion
- EPS (GAAP) guidance for Q2 CY2026 is $0.47 at the midpoint, beating analyst estimates by 50.1%
- Operating Margin: 6%, up from 2.4% in the same quarter last year
- Free Cash Flow was -$79.52 million compared to -$55.75 million in the same quarter last year
- Inventory Days Outstanding: 31, up from 25 in the previous quarter
- Market Capitalization: $19.35 billion
“Amkor delivered a strong start to 2026 with record first quarter revenue driven by broad-based end market demand,” said Kevin Engel, Amkor’s president and chief executive officer.
Company Overview
Operating through a largely Asian facility footprint, Amkor Technologies (NASDAQ: AMKR) provides outsourced packaging and testing for semiconductors.
Revenue Growth
A company’s top-line performance is one signal of its overall business quality. Strong growth can indicate it’s riding a successful new product or emerging trend. Amkor’s annualized revenue growth rate of 5.1% over the last two years was decent for a semiconductor business. Semiconductors are a cyclical industry, and long-term investors should be prepared for periods of high growth followed by periods of revenue contractions.
Long-term growth is the most important, but short-term results matter for semiconductors because the rapid pace of technological innovation (Moore's Law) could make yesterday's hit product obsolete today. Amkor’s annualized revenue growth of 5.1% over the last two years is below its five-year trend, but we still think the results were respectable. 
This quarter, Amkor reported robust year-on-year revenue growth of 27.5%, and its $1.68 billion of revenue topped Wall Street estimates by 1.7%. Beyond the beat, this marks 4 straight quarters of growth, implying that Amkor is in the middle of its cycle - a typical upcycle generally lasts 8-10 quarters. Company management is currently guiding for a 19.1% year-on-year increase in sales next quarter.
Looking further ahead, sell-side analysts expect revenue to grow 7.3% over the next 12 months. While this projection indicates its newer products and services will spur better top-line performance, it is still below the sector average.
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Product Demand & Outstanding Inventory
Days Inventory Outstanding (DIO) is an important metric for chipmakers, as it reflects a business’ capital intensity and the cyclical nature of semiconductor supply and demand. In a tight supply environment, inventories tend to be stable, allowing chipmakers to exert pricing power. Steadily increasing DIO can be a warning sign that demand is weak, and if inventories continue to rise, the company may have to downsize production.
This quarter, Amkor’s DIO came in at 31, which is one day above its five-year average. These numbers show that despite the recent increase, there’s no indication of an excessive inventory buildup.
Key Takeaways from Amkor’s Q1 Results
It was good to see Amkor beat analysts’ EPS expectations this quarter. We were also excited its adjusted operating income outperformed Wall Street’s estimates by a wide margin. On the other hand, its inventory levels materially increased. Overall, we think this was a solid quarter with some key areas of upside. The market seemed to be hoping for more, and the stock traded down 6% to $71.93 immediately following the results.
Is Amkor an attractive investment opportunity at the current price? We think that the latest quarter is only one piece of the longer-term business quality puzzle. Quality, when combined with valuation, can help determine if the stock is a buy. We cover that in our actionable full research report which you can read here (it’s free).
