Leverage is modest and easing, with debt-to-equity declining to 0.15 and a current ratio of 3.27, though a heavily depreciated PP&E base of $263.9 billion may flatter book equity.
United Microelectronics Corporation (UMC) balance sheet — 27-year assets, liabilities & shareholders' equity history
| 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 |
|---|
| Total Current Assets | 238.9B | 204.78B | 189.68B | 216.8B | 252.37B | 233.27B | 164.31B | 153.76B | 141.19B | 139.28B | 110.47B | 94.82B | 96.86B | 88.8B | 80.03B | 84.06B | 93.77B | 102.36B | 68.95B | 81.12B | 132.32B | 145.24B | 133.15B | 154.06B | 111.19B | 100.79B | 97.05B | 40.46B |
| Cash & Short-Term Investments | 151.58B | 128.37B | 115.24B | 144.88B | 178.6B | 170.9B | 109.57B | 98.57B | 84.19B | 82.39B | 58.29B | 53.96B | 46.44B | 53.6B | 47.58B | 54.9B | 59.46B | 74.5B | 50.71B | 52.49B | 103.49B | 113.8B | 104.69B | 120.39B | 83.61B | 78.19B | 62.76B | 27.74B |
| Cash Only | 142.62B | 110.66B | 105B | 132.55B | 173.82B | 132.62B | 94.05B | 95.49B | 83.66B | 81.67B | 57.58B | 53.29B | 45.7B | 50.83B | 42.59B | 49.07B | 51.27B | 66.15B | 48.61B | 47.68B | 93.84B | 108.91B | 101.54B | 118.57B | 81.08B | 76.9B | 62.76B | 27.28B |
| Short-Term Investments | 8.96B | 17.71B | 10.24B | 12.33B | 4.78B | 38.28B | 15.52B | 3.08B | 528.45M | 716.92M | 714.17M | 664.92M | 740.13M | 2.77B | 4.99B | 5.83B | 8.18B | 2.1B | 2.1B | 4.81B | 9.65B | 4.9B | 3.15B | 1.82B | 2.53B | 1.29B | 0 | 457.18M |
| Accounts Receivable | 44.74B | 34.5B | 35.7B | 33.16B | 39.2B | 36.37B | 29.24B | 26.02B | 24.7B | 22.66B | 24B | 19.99B | 23.06B | 17.6B | 17.17B | 15.33B | 19.56B | 17.49B | 8.96B | 15.85B | 15.25B | 16B | 14.03B | 19.15B | 12.12B | 9.1B | 21.8B | 7.12B |
| Days Sales Outstanding | 54.69 | 53.01 | 56.1 | 54.39 | 51.33 | 62.32 | 60.35 | 64.08 | 59.6 | 55.4 | 59.25 | 50.38 | 60.12 | 51.89 | 54.19 | 47.96 | 56.45 | 69.85 | 33.75 | 51.05 | 49.72 | 58.08 | 39.57 | 73.16 | 58.49 | 47.59 | 68.83 | 75.73 |
| Inventory | 38.37B | 37.23B | 35.78B | 35.71B | 31.07B | 23.01B | 22.55B | 21.71B | 18.2B | 18.26B | 17B | 17.64B | 15.24B | 13.99B | 13.02B | 12.71B | 13.03B | 9.14B | 8.13B | 11.87B | 10.88B | 10.74B | 10.03B | 8.36B | 8.46B | 5.72B | 10.79B | 3.11B |
| Days Inventory Outstanding | 76.51 | 80.57 | 83.38 | 90.03 | 74.15 | 59.58 | 59.73 | 62.46 | 51.74 | 54.52 | 52.81 | 56.95 | 51.44 | 50.95 | 49.38 | 48.62 | 53.14 | 43.92 | 36.52 | 48.25 | 43.81 | 43.14 | 39.56 | 41.32 | 48.99 | 34.45 | 69.02 | 44.96 |
| Other Current Assets | 1B | 1.19B | 614.9M | 3.04B | 3.5B | 2.99B | 2.95B | 1.16B | 2.88B | 2.76B | 323.77M | 3.89B | 10.11B | 2B | 330.31M | 305.31M | 877.05M | 538.92M | 683.82M | 219.89M | 1.94B | 3.99B | 4.07B | 5.41B | 7B | 7.78B | 1.16B | 2.48B |
| Total Non-Current Assets | 436.89B | 374.21B | 370.49B | 329.78B | 272.27B | 217.68B | 213.21B | 216.43B | 223.41B | 251.85B | 273.76B | 240.54B | 213.78B | 205.12B | 200.04B | 195.77B | 187.12B | 151.28B | 147.65B | 218.46B | 235.27B | 202.71B | 243.75B | 199.85B | 216.62B | 219.91B | 201.2B | 110.57B |
| Property, Plant & Equipment | 263.92B | 280.03B | 292.03B | 250.85B | 198.03B | 145.39B | 141.11B | 158.88B | 173.51B | 206.03B | 226.16B | 188.77B | 167.75B | 162.76B | 159.85B | 149.32B | 132.76B | 89.6B | 108.51B | 137.23B | 151.8B | 159.53B | 192.33B | 149.3B | 167.47B | 169.12B | 163.42B | 44.5B |
| Fixed Asset Turnover | 0.98x | 0.85x | 0.80x | 0.89x | 1.41x | 1.47x | 1.25x | 0.93x | 0.87x | 0.72x | 0.65x | 0.77x | 0.83x | 0.76x | 0.72x | 0.78x | 0.95x | 1.02x | 0.89x | 0.83x | 0.74x | 0.63x | 0.67x | 0.64x | 0.45x | 0.41x | 0.71x | 0.77x |
| Goodwill | 27.18M | 27.18M | 7.61M | 7.61M | 7.61M | 7.61M | 7.61M | 7.61M | 15.01M | 15.19M | 15.19M | 15.19M | 7.79M | 50.86M | 50.86M | 50.86M | 304.73M | 7.62M | 7.62M | 3.5B | 3.5B | 3.53B | 0 | 0 | 0 | 0 | 0 | 0 |
| Intangible Assets | 4.66B | 4.72B | 4.15B | 4.36B | 4.27B | 3.64B | 4.87B | 5.19B | 2.98B | 3.77B | 4.07B | 4.49B | 4.53B | 4.69B | 1.31B | 300M | 0 | 0 | 0 | 0 | 0 | 0 | 4.5B | 0 | 0 | 0 | 467.91M | 450.75M |
| Long-Term Investments | 462.51B | 75.37B | 62.44B | 61.63B | 56.27B | 59B | 56.58B | 41.34B | 31.09B | 30.89B | 32.3B | 38.11B | 34.86B | 30.12B | 34.94B | 38.53B | 47.18B | 55.23B | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Current Assets | 4.93B | 5.54B | 6.64B | 7.79B | 8.47B | 4.17B | 3.81B | 3.2B | 9.43B | 5.03B | 6.19B | 6.83B | 4.37B | 4.77B | 3.06B | 4.58B | 3.98B | 3.29B | 35.57B | 73.47B | 75.79B | 35.63B | 43.12B | 46.07B | 43.9B | 46.42B | 33.5B | 63.83B |
| Total Assets | 675.79B | 579B | 560.17B | 546.58B | 524.65B | 450.96B | 377.52B | 370.19B | 364.6B | 391.13B | 384.23B | 335.35B | 310.65B | 293.91B | 280.96B | 279.83B | 280.89B | 253.64B | 216.61B | 299.57B | 367.6B | 347.95B | 376.9B | 353.91B | 327.81B | 320.69B | 298.25B | 151.03B |
| Asset Turnover | 0.42x | 0.41x | 0.41x | 0.41x | 0.53x | 0.47x | 0.47x | 0.40x | 0.41x | 0.38x | 0.38x | 0.43x | 0.45x | 0.42x | 0.41x | 0.42x | 0.45x | 0.36x | 0.45x | 0.38x | 0.30x | 0.29x | 0.34x | 0.27x | 0.23x | 0.22x | 0.39x | 0.23x |
| Asset Growth % | 51.24% | 3.36% | 2.49% | 4.18% | 16.34% | 19.45% | 1.98% | 1.53% | -6.78% | 1.8% | 14.57% | 7.95% | 5.69% | 4.61% | 0.4% | -0.38% | 10.74% | 17.1% | -27.7% | -18.5% | 5.65% | -7.68% | 6.5% | 7.96% | 2.22% | 7.53% | 97.48% | - |
| Total Current Liabilities | 72.97B | 87.6B | 77.4B | 99.01B | 112.61B | 108.25B | 78.24B | 72.71B | 49.9B | 88.82B | 72.79B | 49.49B | 49.2B | 48.2B | 40.03B | 42.91B | 45.44B | 35.25B | 12.85B | 45.29B | 36.1B | 37.06B | 36.66B | 44.06B | 29.22B | 34.52B | 42.11B | 25.09B |
| Accounts Payable | 10.02B | 9.17B | 7.63B | 7.53B | 8.98B | 8.36B | 7.86B | 8.88B | 6.8B | 6.54B | 6.85B | 5.95B | 6.17B | 7.41B | 6.27B | 5.01B | 19.64B | 10.99B | 2.59B | 5.69B | 4.86B | 5.52B | 5.41B | 6.59B | 13.73B | 15.65B | 9.48B | 12.6B |
| Days Payables Outstanding | 18.77 | 19.85 | 17.79 | 18.97 | 21.44 | 21.66 | 20.82 | 25.54 | 19.33 | 19.52 | 21.3 | 19.22 | 20.81 | 26.99 | 23.76 | 19.17 | 80.1 | 52.82 | 11.65 | 23.13 | 19.59 | 22.15 | 21.36 | 32.58 | 79.5 | 94.32 | 60.62 | 182.03 |
| Short-Term Debt | 2.77B | 8.41B | 8.52B | 13.53B | 0 | 1.92B | 38.04B | 12.02B | 13.1B | 25.45B | 20.55B | 5.51B | 6.25B | 4.64B | 5.77B | 9.41B | 4.12B | 128.68M | 199.28M | 23.25B | 9.41B | 6.15B | 11.46B | 22.92B | 8.98B | 10.47B | 13.59B | 10B |
| Deferred Revenue (Current) | 15.59B | 2.58B | 2.2B | 3.25B | 3.55B | 3.44B | 2.04B | 988.12M | 932.37M | 22.49B | 31.43B | 30.42B | 26.53B | 18.71B | 17.36B | 10.3B | 12.84B | 14.29B | 7.03B | 8.22B | 7.02B | 7.95B | 9.22B | 5.2B | 4.04B | 5.46B | 4.02B | 0 |
| Other Current Liabilities | 18.51B | 27.1B | 18.28B | 19.03B | 30.18B | 57.62B | 28.7B | 24.53B | 27B | 34.35B | 13.95B | 7.61B | 10.25B | 17.43B | -17.68B | -10.38B | -3.99B | 1.04B | -6.47B | -77.64M | 7.78B | 9.48B | 1.35B | 4.14B | -1.58B | -2.52B | 11B | 696.01M |
| Current Ratio | 3.27x | 2.34x | 2.45x | 2.19x | 2.24x | 2.15x | 2.10x | 2.11x | 2.83x | 1.57x | 1.52x | 1.92x | 1.97x | 1.84x | 2.00x | 1.96x | 2.06x | 2.90x | 5.37x | 1.79x | 3.67x | 3.92x | 3.63x | 3.50x | 3.81x | 2.92x | 2.30x | 1.61x |
| Quick Ratio | 2.75x | 1.91x | 1.99x | 1.83x | 1.97x | 1.94x | 1.81x | 1.82x | 2.46x | 1.36x | 1.28x | 1.56x | 1.66x | 1.55x | 1.67x | 1.66x | 1.78x | 2.64x | 4.74x | 1.53x | 3.36x | 3.63x | 3.36x | 3.31x | 3.52x | 2.75x | 2.05x | 1.49x |
| Cash Conversion Cycle | 112.43 | 113.74 | 121.69 | 125.45 | 104.05 | 100.25 | 99.26 | 101.01 | 92 | 90.4 | 90.76 | 88.11 | 90.75 | 75.84 | 79.82 | 77.41 | 29.49 | 60.95 | 58.63 | 76.18 | 73.93 | 79.06 | 57.77 | 81.9 | 27.98 | -12.28 | 77.23 | -61.34 |
| Total Non-Current Liabilities | 131.94B | 111.54B | 117.06B | 100.96B | 89.23B | 78.33B | 63.5B | 90.26B | 108.17B | 92.7B | 96.49B | 61.02B | 41.11B | 36.07B | 35.9B | 24.8B | 10.31B | 4.3B | 11.92B | 11.27B | 34.14B | 45.59B | 64.71B | 62.96B | 64.59B | 57.25B | 38.58B | 11.4B |
| Long-Term Debt | 61.49B | 45.37B | 55.53B | 45.24B | 39.88B | 39.83B | 24.77B | 47.89B | 67.08B | 53.32B | 60.73B | 47.52B | 33.4B | 28.42B | 32.15B | 21.1B | 6.8B | 766.55M | 8.13B | 7.5B | 30.38B | 41.8B | 61.39B | 60.23B | 62.47B | 54.7B | 35.53B | 10.89B |
| Capital Lease Obligations | 21.45B | 5.38B | 5.78B | 4.88B | 5.2B | 4.51B | 5.03B | 5.46B | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.37M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Tax Liabilities | 51.35B | 11.92B | 8.12B | 5.63B | 3.56B | 2.32B | 1.63B | 2.09B | 0 | 2.33B | 2.4B | 2.39B | 3.14B | 3.33B | 32.3M | 35.91M | 20.81M | 9.75M | 13.6M | 47.55M | 52.59M | 51.99M | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Current Liabilities | 49.33B | 47.08B | 47.17B | 44.79B | 40.15B | 31.03B | 31.61B | 34.34B | 36.92B | 36.58B | 32.87B | 10.6B | 4.12B | 4B | 3.56B | 408.43M | 186.73M | 258.56M | 3.77B | 3.73B | 3.71B | 3.73B | 3.32B | 2.72B | 2.12B | 2.56B | 3.05B | 516.4M |
| Total Liabilities | 204.91B | 199.14B | 194.46B | 202.86B | 201.83B | 186.58B | 141.74B | 162.97B | 158.07B | 181.51B | 169.28B | 110.5B | 90.31B | 84.27B | 75.94B | 67.71B | 55.75B | 39.54B | 24.76B | 56.56B | 70.24B | 82.64B | 101.36B | 107.02B | 93.8B | 91.78B | 80.69B | 36.49B |
| Total Debt | 70.39B | 59.78B | 70.47B | 64.16B | 45.61B | 46.82B | 68.39B | 65.93B | 80.19B | 78.76B | 81.28B | 53.03B | 39.65B | 33.06B | 37.93B | 30.51B | 10.92B | 13.7B | 8.34B | 30.75B | 39.79B | 47.95B | 72.84B | 83.16B | 71.45B | 65.17B | 49.13B | 20.89B |
| Net Debt | -72.23B | -50.88B | -34.53B | -68.39B | -128.2B | -85.8B | -25.66B | -29.56B | -3.47B | -2.91B | 23.7B | -260.98M | -6.05B | -17.77B | -4.67B | -18.56B | -40.35B | -52.46B | -40.28B | -16.94B | -54.05B | -60.96B | -28.7B | -35.41B | -9.62B | -11.74B | -13.63B | -6.4B |
| Debt / Equity | 0.15x | 0.16x | 0.19x | 0.19x | 0.14x | 0.18x | 0.29x | 0.32x | 0.39x | 0.38x | 0.38x | 0.24x | 0.18x | 0.16x | 0.18x | 0.14x | 0.05x | 0.06x | 0.04x | 0.13x | 0.13x | 0.18x | 0.26x | 0.34x | 0.31x | 0.28x | 0.23x | 0.18x |
| Debt / EBITDA | 0.58x | 0.58x | 0.72x | 0.65x | 0.31x | 0.47x | 0.97x | 1.21x | 1.39x | 1.32x | 1.40x | 0.94x | 0.78x | 0.78x | 0.96x | 0.81x | 0.21x | 0.38x | 0.23x | 0.68x | 0.78x | 1.03x | 1.05x | 1.65x | 1.86x | 2.18x | 0.67x | 1.92x |
| Net Debt / EBITDA | -0.59x | -0.49x | -0.35x | -0.70x | -0.87x | -0.87x | -0.36x | -0.54x | -0.06x | -0.05x | 0.41x | -0.00x | -0.12x | -0.42x | -0.12x | -0.49x | -0.77x | -1.45x | -1.11x | -0.37x | -1.06x | -1.31x | -0.42x | -0.70x | -0.25x | -0.39x | -0.19x | -0.59x |
| Interest Coverage | 68.15x | 32.45x | 30.70x | 44.49x | 61.51x | 32.31x | 12.25x | 2.64x | 2.06x | 4.16x | 5.16x | 25.00x | 15.41x | 25.05x | 12.55x | 27.07x | 312.86x | 11.60x | -134.80x | 33.76x | 7.96x | -7.36x | 15.20x | 7.34x | 0.08x | -2.54x | 20.08x | - |
| Total Equity | 470.88B | 379.86B | 365.71B | 343.72B | 322.81B | 264.38B | 235.77B | 207.21B | 206.54B | 209.62B | 214.95B | 224.85B | 220.34B | 209.64B | 205.02B | 212.12B | 225.14B | 214.1B | 191.84B | 243.01B | 297.36B | 265.31B | 275.54B | 246.89B | 234B | 228.92B | 217.56B | 114.53B |
| Equity Growth % | 70.02% | 3.87% | 6.4% | 6.48% | 22.1% | 12.13% | 13.78% | 0.33% | -1.47% | -2.48% | -4.41% | 2.05% | 5.1% | 2.25% | -3.35% | -5.78% | 5.16% | 11.6% | -21.06% | -18.28% | 12.08% | -3.71% | 11.6% | 5.51% | 2.22% | 5.22% | 89.95% | - |
| Book Value per Share | 947.67 | 152.12 | 144.79 | 136.23 | 127.09 | 106.11 | 94.51 | 78.66 | 77.82 | 78.97 | 80.50 | 85.36 | 86.62 | 79.71 | 77.14 | 80.10 | 88.17 | 83.72 | 72.83 | 72.35 | 109.25 | 97.39 | 99.31 | 89.93 | 85.85 | 85.01 | 83.86 | 44.97 |
| Total Shareholders' Equity | 470.92B | 379.77B | 365.45B | 343.38B | 322.47B | 264.15B | 235.66B | 202.5B | 206.07B | 208.66B | 212.78B | 222.83B | 216.49B | 205.32B | 199.12B | 207.74B | 219.34B | 213.6B | 184.85B | 236.48B | 291.12B | 258.95B | 266.8B | 231.84B | 217.94B | 213.32B | 208.41B | 104.46B |
| Common Stock | 125.7B | 125.88B | 125.61B | 125.3B | 125.05B | 124.83B | 124.22B | 117.24B | 124.24B | 126.24B | 126.24B | 127.58B | 127.25B | 126.92B | 129.52B | 130.84B | 129.88B | 129.88B | 130B | 132.15B | 191.29B | 198.5B | 178.21B | 161.13B | 155.12B | 133.36B | 114.71B | 67.74B |
| Retained Earnings | 233.8B | 191.42B | 184.23B | 187.25B | 169.73B | 83.16B | 56.62B | 60.82B | 61.59B | 53.06B | 52.6B | 55.35B | 49.17B | 38.3B | 30.38B | 31.02B | 28.2B | 10.65B | -7.04B | 31.65B | 34.79B | 26.64B | 42.47B | 26.75B | 20.05B | 34.15B | 56.39B | 15.99B |
| Treasury Stock | -3.1B | 0 | -9.8B | -9.8B | -8.62B | -8.19B | -8.42B | -8.41B | -13.83B | -12.9B | -12.89B | -11.42B | -10.02B | -9.89B | -12.49B | -13.75B | -6.22B | -1.89B | -119.8M | -15B | -29.39B | -51.47B | -37.14B | -36.8B | -38.67B | -35.67B | -31.07B | -16.99B |
| Accumulated OCI | 91.63B | 47.06B | 46.34B | 33.67B | 21.17B | 14.28B | 11.73B | -11.02B | -14.51B | 657.96M | 5.21B | 9.14B | 10.11B | 4.18B | 4.37B | 10.33B | 22.44B | 30.6B | 3.81B | 21.55B | 26.73B | -322.96M | -1.75B | 821.63M | -621.88M | -631.4M | 26.8B | 219.65M |
| Minority Interest | -36.76M | 87.17M | 256.61M | 340.86M | 343.68M | 223.18M | 113.36M | 410.06M | 466.77M | 956.81M | 2.16B | 2.03B | 3.85B | 4.32B | 2.57B | 4.39B | 5.8B | 497.94M | 6.99B | 6.53B | 6.24B | 6.35B | 8.74B | 15.05B | 16.06B | 15.59B | 9.15B | 10.08B |
Quick answers to the most common questions about buying UMC stock.
As of 2025, United Microelectronics Corporation (UMC) had total assets of $579.00B including $204.78B in current assets.
United Microelectronics Corporation (UMC) carries total debt of $59.78B, offset by $128.37B in cash and short-term investments. Comparing total debt to cash helps evaluate the company's debt burden and net leverage.
United Microelectronics Corporation (UMC) has total shareholders' equity (book value) of $379.77B ($152.12 book value per share). Book value represents the net worth of the company belonging to common stock holders.
United Microelectronics Corporation (UMC) reported a current ratio of 2.34x. A current ratio above 1.0x indicates that the company has more current assets than current liabilities, suggesting sufficient short-term liquidity.
Key Metrics
Top Statement Risk
Mature-node pricing pressure and concentration
Equity Base Compounding Through Retained Earnings
According to reported quarterly figures, UMC's equity expanded from $355.8 billion in 2024Q2 to $470.9 billion in 2026Q3, with retained earnings rising from $167.0 billion to $233.8 billion, indicating the balance sheet is strengthening steadily.
The growth in total equity appears driven mainly by retained earnings accumulation rather than external capital raises, which suggests internally generated profits are reinforcing the capital base. Total assets rose roughly 15% over the same window, yet liabilities grew more slowly, so the equity ratio improved. This trajectory may indicate that the business is increasingly self-funding, though investors should monitor whether the pace holds if mature-node pricing softens.
Negligible Leverage Despite Recent Debt Peaks
Based on UMC's reported figures, debt-to-equity fell from 0.26 in 2024Q3 to 0.15 in 2026Q3, with total debt of $70.4 billion against $470.9 billion in equity, suggesting leverage is modest and easing.
The peak in total debt during 2024Q3 at $95.5 billion appears to have been reduced substantially, and the current ratio of 3.27 indicates ample short-term coverage. Low leverage suggests the company is not dependent on refinancing markets to sustain its fab investment program. Investors may still wish to examine the maturity profile of remaining obligations, though the reported figures do not indicate near-term stress.
Cash Cushion Exceeds Obligations by Wide Margin
As reported in financial statements, UMC held $142.6 billion in cash in 2026Q3, up from $103.4 billion in 2024Q3, providing a buffer against the $204.9 billion in total liabilities and supporting a current ratio of 3.27.
Cash has grown in each of the most recent quarters, which suggests the company retains substantial flexibility to absorb cyclical downturns or fund capacity expansion without external financing. The high current ratio points to a comfortable working capital position, though part of this cash may be earmarked for capital projects and not freely deployable. The liquidity profile appears robust on reported figures.
Asset-Heavy Base With Minimal Intangibles
Based on reported figures, UMC's PP&E net stood at $263.9 billion in 2026Q3 against total assets of $675.8 billion, while goodwill is effectively negligible at $27.2 million, indicating an asset base dominated by physical fabrication capacity.
The asset mix confirms a capital-intensive foundry model where fixed assets form the bulk of the balance sheet. The near-absence of goodwill reduces impairment risk, so reported equity is less exposed to write-downs from acquisitions. PP&E declined from its 2025Q1 peak of $293.5 billion before recovering partly, which may reflect depreciation outpacing new capex during that interval.
Headline Equity Strength Versus Asset Depreciation
The strongest counterpoint is that UMC's heavily depreciated fab base may flatter book equity, and the reported 34.0% gross margin could compress if mature-node capacity expansion pressures pricing, reducing the earnings that support retained earnings growth.
Because a large share of the PP&E base is depreciated, reported book value and returns may overstate economic capacity relative to the replacement cost of fabs. If prices fall, the equity accumulation visible in the reported figures could slow meaningfully. This is an analytical inference from the data rather than a confirmed outcome, and investors should monitor depreciation policies and utilization trends.