Revenue growth remains highly uneven with a 27.5% year-over-year increase in 2026Q1, yet structural margin compression persists as gross margins struggle to consistently exceed the 15% threshold.
| Metric | TTM | Dec'25 | Dec'24 | Dec'23 | Dec'22 | Dec'21 | Dec'20 | Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 | Dec'08 | Dec'07 | Dec'06 | Dec'05 | Dec'04 | Dec'03 | Dec'02 | Dec'01 | Dec'00 | Dec'99 | Dec'98 | Dec'97 |
|---|
| Sales/Revenue | 7.07B | 6.71B | 6.32B | 6.5B | 7.09B | 6.14B | 5.05B | 4.05B | 4.32B | 4.19B | 3.89B | 2.88B | 3.13B | 2.96B | 2.76B | 2.78B | 2.94B | 2.18B | 2.66B | 2.74B | 2.73B | 2.1B | 1.9B | 1.6B | 1.64B | 1.52B | 2.39B | 1.91B | 1.57B | 1.46B |
| Revenue Growth % | 12.71% | 6.18% | -2.85% | -8.3% | 15.53% | 21.54% | 24.62% | -6.11% | 3.1% | 7.52% | 34.98% | -7.82% | 5.85% | 7.12% | -0.59% | -5.55% | 34.89% | -18.04% | -2.95% | 0.4% | 29.93% | 10.45% | 18.55% | -2.19% | 8.03% | -36.42% | 24.99% | 21.81% | 7.71% | - |
| Cost of Goods Sold | 6.05B | 5.77B | 5.38B | 5.56B | 5.76B | 4.91B | 4.15B | 3.4B | 3.61B | 3.43B | 3.2B | 2.41B | 2.58B | 2.41B | 2.32B | 2.29B | 2.28B | 1.7B | 2.1B | 2.06B | 2.05B | 1.74B | 1.53B | 1.27B | 1.52B | 1.45B | 1.78B | 1.58B | 1.31B | 1.24B |
| COGS % of Revenue | - | 86.01% | 85.23% | 85.5% | 81.25% | 80.03% | 82.16% | 83.97% | 83.54% | 81.91% | 82.14% | 83.39% | 82.33% | 81.58% | 83.9% | 82.33% | 77.42% | 77.95% | 78.87% | 75.11% | 75.26% | 83.05% | 80.65% | 79.02% | 92.81% | 95.4% | 74.65% | 82.58% | 83.37% | 85.36% |
| Gross Profit | 1.02B | 938.6M | 933.21M | 943.15M | 1.33B | 1.23B | 900.81M | 649.44M | 710.57M | 757.27M | 695.48M | 479.26M | 552.82M | 544.51M | 444.41M | 490.57M | 663.76M | 480.4M | 561.74M | 681.87M | 674.96M | 355.95M | 367.83M | 336.47M | 117.82M | 69.8M | 605.14M | 332.75M | 260.83M | 213.09M |
| Gross Margin % | 14.43% | 13.99% | 14.77% | 14.5% | 18.75% | 19.97% | 17.84% | 16.02% | 16.46% | 18.09% | 17.86% | 16.61% | 17.67% | 18.42% | 16.1% | 17.67% | 22.58% | 22.05% | 21.13% | 24.89% | 24.74% | 16.95% | 19.35% | 20.98% | 7.19% | 4.6% | 25.35% | 17.42% | 16.63% | 14.64% |
| Gross Profit Growth % | - | 0.58% | -1.05% | -29.09% | 8.52% | 36.05% | 38.71% | -8.6% | -6.17% | 8.89% | 45.11% | -13.31% | 1.53% | 22.52% | -9.41% | -26.09% | 38.17% | -14.48% | -17.62% | 1.02% | 89.62% | -3.23% | 9.32% | 185.58% | 68.8% | -88.47% | 81.86% | 27.57% | 22.4% | - |
| Operating Expenses | 483.9M | 471.21M | 494.76M | 472.87M | 432.8M | 462.12M | 443.57M | 419.57M | 452.42M | 464.07M | 401.54M | 313.67M | 331.36M | 312.4M | 271.12M | 296.9M | 289.96M | 255.36M | 298.13M | 291.18M | 289.88M | 326.09M | 258.62M | 213.46M | 521.21M | 338.48M | 281.76M | 156.67M | 128.1M | 112.25M |
| OpEx % of Revenue | - | 7.02% | 7.83% | 7.27% | 6.1% | 7.53% | 8.78% | 10.35% | 10.48% | 11.08% | 10.31% | 10.87% | 10.59% | 10.57% | 9.82% | 10.69% | 9.86% | 11.72% | 11.21% | 10.63% | 10.62% | 15.53% | 13.6% | 13.31% | 31.79% | 22.3% | 11.8% | 8.2% | 8.17% | 7.71% |
| Selling, General & Admin | 321.05M | 304.47M | 331.81M | 295.39M | 283.37M | 296.08M | 302.84M | 281.93M | 295.24M | 297.45M | 284.33M | 231.65M | 254.5M | 247.78M | 217M | 246.51M | 242.42M | 210.91M | 251.76M | 251.25M | 250.14M | 293.15M | 214.34M | 179.95M | 188.57M | 214.73M | 192.62M | 145.23M | 119.85M | 103.73M |
| SG&A % of Revenue | - | 4.54% | 5.25% | 4.54% | 4% | 4.82% | 6% | 6.96% | 6.84% | 7.11% | 7.3% | 8.03% | 8.13% | 8.38% | 7.86% | 8.88% | 8.25% | 9.68% | 9.47% | 9.17% | 9.17% | 13.96% | 11.27% | 11.22% | 11.5% | 14.15% | 8.07% | 7.6% | 7.64% | 7.13% |
| Research & Development | 162.85M | 166.74M | 162.95M | 177.47M | 149.43M | 166.04M | 140.73M | 137.64M | 157.18M | 166.61M | 117.21M | 82.02M | 76.86M | 64.63M | 54.12M | 50.39M | 47.53M | 44.45M | 56.23M | 41.65M | 38.73M | 37.35M | 36.71M | 25.78M | 31.19M | 38.79M | 26.06M | 11.44M | 8.25M | 8.53M |
| R&D % of Revenue | - | 2.49% | 2.58% | 2.73% | 2.11% | 2.7% | 2.79% | 3.4% | 3.64% | 3.98% | 3.01% | 2.84% | 2.46% | 2.19% | 1.96% | 1.81% | 1.62% | 2.04% | 2.11% | 1.52% | 1.42% | 1.78% | 1.93% | 1.61% | 1.9% | 2.56% | 1.09% | 0.6% | 0.53% | 0.59% |
| Other Operating Expenses | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -2.21M | 1.59M | 0 | 0 | -281K | -9.86M | -1.72M | 1M | -4.41M | 7.58M | 7.72M | 301.46M | 84.96M | 63.08M | 0 | 0 | 0 |
| Operating Income | 536.15M | 467.38M | 438.45M | 470.29M | 897.19M | 763.43M | 457.25M | 233.17M | 258.14M | 293.2M | 293.94M | 165.59M | 221.46M | 232.11M | 173.29M | 193.67M | 373.8M | 225.32M | -407.51M | 390.69M | 385.08M | 29.86M | 109.21M | 123.01M | -403.39M | -268.68M | 323.38M | 176.08M | 132.74M | 100.84M |
| Operating Margin % | 7.58% | 6.97% | 6.94% | 7.23% | 12.65% | 12.44% | 9.05% | 5.75% | 5.98% | 7% | 7.55% | 5.74% | 7.08% | 7.85% | 6.28% | 6.98% | 12.72% | 10.34% | -15.33% | 14.26% | 14.11% | 1.42% | 5.74% | 7.67% | -24.6% | -17.7% | 13.55% | 9.22% | 8.47% | 6.93% |
| Operating Income Growth % | - | 6.6% | -6.77% | -47.58% | 17.52% | 66.96% | 96.1% | -9.67% | -11.96% | -0.25% | 77.51% | -25.23% | -4.59% | 33.94% | -10.52% | -48.19% | 65.9% | 155.29% | -204.3% | 1.46% | 1189.67% | -72.66% | -11.22% | 130.49% | -50.14% | -183.09% | 83.66% | 32.65% | 31.63% | - |
| EBITDA | 1.01B | 1.11B | 1.03B | 1.1B | 1.51B | 1.33B | 967.64M | 757.35M | 830.11M | 875.14M | 849.13M | 659.79M | 686.17M | 642.46M | 543.77M | 529.31M | 697.41M | 530.83M | -97.59M | 679.52M | 670.85M | 287.18M | 351.95M | 361.28M | -69.8M | 196.4M | 656.28M | 356.41M | 251.97M | 182.71M |
| EBITDA Margin % | 14.29% | 16.54% | 16.35% | 16.94% | 21.29% | 21.62% | 19.16% | 18.69% | 19.23% | 20.9% | 21.81% | 22.87% | 21.93% | 21.73% | 19.7% | 19.06% | 23.73% | 24.36% | -3.67% | 24.8% | 24.59% | 13.68% | 18.51% | 22.53% | -4.26% | 12.94% | 27.49% | 18.66% | 16.07% | 12.55% |
| EBITDA Growth % | 1.02% | 7.38% | -6.23% | -27.03% | 13.78% | 37.14% | 27.77% | -8.76% | -5.15% | 3.06% | 28.7% | -3.84% | 6.8% | 18.15% | 2.73% | -24.1% | 31.38% | 643.96% | -114.36% | 1.29% | 133.6% | -18.4% | -2.58% | 617.61% | -135.54% | -70.07% | 84.14% | 41.45% | 37.91% | - |
| D&A (Non-Cash Add-back) | 488.19M | 642.01M | 594.66M | 631.51M | 612.7M | 563.58M | 510.4M | 524.18M | 571.96M | 581.94M | 555.19M | 494.2M | 464.71M | 410.35M | 370.48M | 335.64M | 323.61M | 305.51M | 309.92M | 288.83M | 285.76M | 257.32M | 242.74M | 238.28M | 333.6M | 465.08M | 332.91M | 180.33M | 119.24M | 81.86M |
| EBIT | 564.02M | 520.06M | 495.96M | 502.84M | 915.5M | 766.57M | 450.85M | 234.71M | 264.76M | 297.79M | 314.33M | 164.84M | 246M | 229.9M | 152.05M | 179.74M | 352M | 241.92M | -300.71M | 390.69M | 385.08M | 29.51M | 109.21M | 123.01M | -416.92M | -277.15M | 323.38M | 176.17M | 132.78M | 100.9M |
| Net Interest Income | -44.24M | -75.44M | 596K | -10.54M | -45.8M | -50.44M | -58.72M | -64.93M | -74.81M | -82.34M | -83.31M | -83.84M | -106.57M | -102.12M | -94.78M | -83.86M | -97.89M | -113.03M | -116.23M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Interest Income | 32.1M | 0 | 65.54M | 48.46M | 12.76M | 1.06M | 5.45M | 6.66M | 4.13M | 3.21M | 1.33M | 2.54M | 3.36M | 3.79M | 3.16M | 2.75M | 2.95M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Interest Expense | 76.34M | 75.44M | 64.94M | 59M | 58.56M | 51.51M | 64.17M | 71.59M | 78.95M | 85.55M | 84.64M | 86.38M | 109.92M | 105.91M | 97.94M | 86.61M | 100.84M | 113.03M | 116.23M | 124.1M | 154.81M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Income/Expense | -21.01M | -22.77M | -7.44M | -26.45M | -40.25M | -48.37M | -70.56M | -73.36M | -72.33M | -98.04M | -78.78M | -82.91M | -85.38M | -108.12M | -92.99M | -93.45M | -122.64M | -98.79M | -18.18M | -155.85M | -202.59M | -171.95M | -131.55M | -175.61M | -357.49M | -263.95M | -146.94M | -72.87M | -32.58M | -39.89M |
| Pretax Income | 515.14M | 444.62M | 431.02M | 443.84M | 856.93M | 715.07M | 386.68M | 159.81M | 185.81M | 303.87M | 215.16M | 68.29M | 136.08M | 123.99M | 81.9M | 100.22M | 251.16M | 126.52M | -425.69M | 234.84M | 182.49M | -142.44M | -22.34M | -52.6M | -760.94M | -532.55M | 197.43M | 105.29M | 100.73M | 61.01M |
| Pretax Margin % | 7.29% | 6.63% | 6.82% | 6.83% | 12.08% | 11.65% | 7.66% | 3.94% | 4.3% | 7.26% | 5.53% | 2.37% | 4.35% | 4.19% | 2.97% | 3.61% | 8.54% | 5.81% | -16.01% | 8.57% | 6.69% | -6.78% | -1.18% | -3.28% | -46.41% | -35.09% | 8.27% | 5.51% | 6.42% | 4.19% |
| Income Tax | 76.91M | 68.5M | 75.48M | 81.71M | 89.89M | 69.46M | 46.18M | 37.18M | 56.25M | 38.98M | 47.85M | 28.04M | 33.84M | 22.65M | 19M | 7.12M | 19.01M | -29.76M | 31.79M | 12.6M | 11.21M | -5.55M | 15.19M | -233K | 65.81M | -81.69M | 22.29M | 26.6M | 24.72M | 7.08M |
| Effective Tax Rate % | 14.93% | 15.41% | 17.51% | 18.41% | 10.49% | 9.71% | 11.94% | 23.27% | 30.27% | 12.83% | 22.24% | 41.05% | 24.87% | 18.26% | 23.2% | 7.11% | 7.57% | -23.52% | -7.47% | 5.36% | 6.14% | 3.9% | -67.99% | 0.44% | -8.65% | 15.34% | 11.29% | 25.26% | 24.54% | 11.6% |
| Net Income | 436.12M | 373.89M | 354.01M | 359.81M | 765.82M | 643M | 338.14M | 120.89M | 127.09M | 260.71M | 164.19M | 57.57M | 130.39M | 109.3M | 62.02M | 91.81M | 231.97M | 155.98M | -456.69M | 219.86M | 170.08M | -136.89M | -37.54M | 2.2M | -826.76M | -450.86M | 154.15M | 76.72M | 75.46M | 43.28M |
| Net Margin % | 6.17% | 5.57% | 5.6% | 5.53% | 10.8% | 10.48% | 6.69% | 2.98% | 2.94% | 6.23% | 4.22% | 2% | 4.17% | 3.7% | 2.25% | 3.31% | 7.89% | 7.16% | -17.18% | 8.03% | 6.23% | -6.52% | -1.97% | 0.14% | -50.42% | -29.7% | 6.46% | 4.02% | 4.81% | 2.97% |
| Net Income Growth % | 37.91% | 5.62% | -1.61% | -53.02% | 19.1% | 90.16% | 179.71% | -4.88% | -51.25% | 58.78% | 185.22% | -55.85% | 19.3% | 76.23% | -32.45% | -60.42% | 48.72% | 134.15% | -307.72% | 29.27% | 224.25% | -264.69% | -1807.73% | 100.27% | -83.37% | -392.48% | 100.93% | 1.67% | 74.35% | - |
| Net Income (Continuing) | 438.23M | 376.12M | 355.54M | 362.13M | 767.04M | 645.61M | 340.5M | 122.63M | 129.56M | 267.7M | 167.3M | 53.89M | 133.24M | 111.66M | 42.7M | 93.09M | 232.15M | 156.28M | -457.48M | 219.86M | 170.08M | -137.24M | -37.54M | -52.37M | -835.09M | -456.49M | 154.15M | 76.7M | 75.5M | 43.3M |
| Discontinued Operations | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Minority Interest | 35.63M | 35.18M | 33.62M | 32.73M | 30.95M | 30.27M | 28.26M | 26.5M | 25.36M | 23.45M | 19.82M | 17.25M | 14.7M | 11.2M | 8.84M | 7.96M | 6.67M | 6.49M | 6.02M | 7.02M | 4.6M | 3.95M | 6.68M | 1.34M | 10.14M | 7.74M | 0 | 0 | 0 | 9.28M |
| EPS (Diluted) | 1.75 | 1.50 | 1.43 | 1.46 | 3.11 | 2.62 | 1.40 | 0.50 | 0.53 | 1.09 | 0.69 | 0.24 | 0.55 | 0.50 | 0.32 | 0.39 | 0.91 | 0.67 | -2.50 | 1.11 | 0.90 | -0.78 | -0.21 | -0.03 | -5.04 | -2.87 | 1.06 | 0.63 | 0.70 | 0.48 |
| EPS Growth % | 37.25% | 4.9% | -2.05% | -53.05% | 18.7% | 87.14% | 180% | -5.66% | -51.38% | 57.97% | 187.5% | -56.36% | 10% | 56.25% | -17.95% | -57.14% | 35.82% | 126.8% | -325.23% | 23.33% | 215.38% | -271.43% | -600% | 99.4% | -75.61% | -370.75% | 68.25% | -10% | 45.83% | - |
| EPS (Basic) | - | 1.51 | 1.44 | 1.46 | 3.13 | 2.64 | 1.40 | 0.50 | 0.53 | 1.09 | 0.69 | 0.24 | 0.56 | 0.58 | 0.39 | 0.48 | 1.26 | 0.85 | -2.50 | 1.22 | 0.96 | -0.78 | -0.21 | -0.03 | -5.04 | -2.87 | 1.06 | 0.64 | 0.71 | 0.48 |
| Diluted Shares Outstanding | 249.57M | 248.3M | 247.92M | 247.18M | 246.21M | 245.7M | 242.25M | 240.12M | 239.74M | 239.65M | 238.03M | 237.17M | 236.73M | 235.33M | 243M | 273.69M | 282.6M | 263.38M | 182.73M | 208.77M | 199.56M | 176.38M | 175.34M | 167.14M | 164.12M | 157.11M | 151.66M | 135.07M | 116.6M | 90.21M |
| Basic Shares Outstanding | 247.55M | 247.16M | 246.48M | 245.63M | 244.68M | 243.88M | 241.51M | 239.72M | 239.33M | 238.94M | 237.42M | 236.85M | 230.71M | 187.03M | 160.1M | 190.83M | 183.31M | 183.07M | 182.73M | 180.6M | 177.68M | 176.38M | 175.34M | 167.14M | 164.12M | 157.11M | 145.81M | 119.34M | 106.22M | 90.21M |
| Dividend Payout Ratio | - | 21.92% | 50.45% | 20.76% | 7.2% | 7.96% | - | - | - | - | 0.33% | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 43.86% | 11.55% |
High Fixed Cost Sensitivity
According to the provided quarterly income statements, Amkor's revenue growth has fluctuated significantly, reaching a 27.5% year-over-year increase in 2026Q1 after a period of contraction, suggesting that the company's top-line performance remains highly sensitive to the volatile demand cycles inherent in the semiconductor assembly and test industry.
The recent revenue acceleration appears to be a rebound from the trough observed in early 2025 rather than a sustained structural shift. Investors should monitor whether this growth is driven by high-margin advanced packaging adoption or merely a recovery in legacy volume, as the latter would offer limited long-term value creation.
As reported in financial statements, Amkor's gross margin has struggled to maintain levels above 15%, peaking at 16.7% in 2025Q4 before retreating to 14.2% in 2026Q1, which highlights the difficulty of achieving consistent profitability in a capital-intensive environment characterized by intense pricing pressure from global competitors.
The inability to consistently expand gross margins suggests that the company may lack sufficient pricing power to offset the high depreciation costs associated with its assembly equipment. This margin profile warrants further investigation into whether the product mix is shifting toward lower-margin commodity services despite management's focus on advanced packaging.
Based on the income statement data, operating income has shown extreme sensitivity to revenue changes, swinging from a low of $31.5 million in 2025Q1 to $185 million in 2025Q4, indicating that the company's high fixed-cost structure prevents stable operating leverage during periods of fluctuating factory utilization.
The wide variance in operating margins, which ranged from 2.4% to 9.8% over the last ten quarters, suggests that Amkor is highly vulnerable to volume-driven margin erosion. This volatility implies that the company's profitability is more dependent on factory utilization rates than on structural cost efficiencies or SG&A discipline.
Analysis of the cost structure reveals that COGS consistently consumes the vast majority of revenue, often exceeding 80% of total sales, which underscores the heavy reliance on expensive manufacturing infrastructure and the resulting pressure on the company's ability to generate meaningful bottom-line earnings during cyclical downturns.
The persistent weight of COGS suggests that management's expense discipline is secondary to the fundamental challenge of managing a capital-intensive asset base. Investors should monitor whether future investments in advanced packaging facilities will lead to higher depreciation charges that could further suppress net margins in the near term.
Data from recent filings suggests that Amkor's net margin, which dipped as low as 1.6% in 2025Q1, remains susceptible to competitive threats from foundries and larger OSAT peers, raising concerns about the long-term sustainability of its current earnings quality in an increasingly commoditized semiconductor packaging market.
Short-sellers may focus on the risk that major foundries could internalize advanced packaging steps, potentially stripping Amkor of its most profitable business segments. The current financial data does not yet provide evidence that the company has successfully insulated itself from these structural competitive pressures.
Quick answers to the most common questions about buying AMKR stock.
For fiscal year 2025, Amkor Technology, Inc. (AMKR) reported total revenue of $6.71B. This represents a 360.8% increase compared to $1.46B in 1997.
Amkor Technology, Inc. (AMKR) is profitable, generating $373.9M in net income for the fiscal year ending 2025 with a net profit margin of 5.6%.
Amkor Technology, Inc. (AMKR) reported an operating income of $467.4M, resulting in an operating profit margin of 7.0%. This margin reflects the operational efficiency of the business before interest and taxes.
Amkor Technology, Inc. (AMKR) generated $938.6M in gross profit for the year, representing a gross profit margin of 14.0%. This demonstrates the company's core pricing power and production efficiency.