Cash conversion efficiency is strained, highlighted by a negative 14.5% free cash flow margin in 2026Q1 and an operating cash flow to net income ratio of -0.19.
| 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 | Dec'96 |
|---|
| Cash from Operations | 115.48M | 139.55M | 50.84M | 74.53M | 22.94M | 54.88M | 34.74M | 22.21M | 36.17M | -2.46M | 544K | 11.47M | 2.19M | -4.69M | 17.24M | 26.41M | 16.89M | 24.8M | 9.06M | -17.82M | 14.33M | 29.27M | 15.88M | 19.43M | 17.83M | 39.17M | 38.88M | 10.1M | 30.8M | 26.1M | 29.7M |
| Operating CF Margin % | - | 34.23% | 14.16% | 18.4% | 5.75% | 15.27% | 11.71% | 8.45% | 12.42% | -1.08% | 0.27% | 5.21% | 0.97% | -2.35% | 7.89% | 10.44% | 6.74% | 12.53% | 4.41% | -9.1% | 7.46% | 16.32% | 9.26% | 12.83% | 11.68% | 19.99% | 15.09% | 5.32% | 18.71% | 16.09% | 20.48% |
| Operating CF Growth % | 325.17% | 174.47% | -31.78% | 224.9% | -58.2% | 57.97% | 56.42% | -38.59% | 1567.98% | -552.94% | -95.26% | 423.37% | 146.72% | -127.21% | -34.72% | 56.31% | -31.87% | 173.62% | 150.86% | -224.35% | -51.04% | 84.3% | -18.27% | 8.99% | -54.48% | 0.75% | 284.92% | -67.21% | 18.01% | -12.12% | 0% |
| Net Income | 136.69M | 118.56M | 6.14M | 53.6M | 25.43M | 56.63M | 17.92M | 14.11M | 31.85M | 258K | -6.26M | 5.16M | -14.07M | -23.5M | -3.8M | 9.31M | 33.54M | 4.09M | -3.6M | 5.33M | -29.74M | 3.92M | -3.72M | -19.54M | -15.94M | -559K | 33.92M | 19.1M | 15.8M | 26.2M | 25.6M |
| Depreciation & Amortization | 20.93M | 20.79M | 18.63M | 17.24M | 13.78M | 11.71M | 11.06M | 10.33M | 9.25M | 8.89M | 8.44M | 9.14M | 9.8M | 10.01M | 10.42M | 11.01M | 10.22M | 10.2M | 10.52M | 11.62M | 13.99M | 17.66M | 21.9M | 23.2M | 22.26M | 19.98M | 18.33M | 15.8M | 11.6M | 8.3M | 8.3M |
| Stock-Based Compensation | 16.29M | 16.79M | 15.3M | 12.87M | 10.26M | 0 | 5.88M | 3.04M | 0 | 1.74M | 506K | 1.78M | 1.63M | 2.45M | 1.24M | 1.92M | 871K | 657K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Taxes | -27.53M | -27.2M | 6K | -34K | -72K | 18K | -21K | 60K | -55K | -172K | -78K | -183K | 18K | 4.49M | -369K | 148K | -6.27M | -74K | 127K | 104K | 86K | -133K | 0 | -1.05M | 1.17M | -902K | 764K | 900K | 300K | -200K | 0 |
| Other Non-Cash Items | -27.61M | 996K | 19.5M | 43K | 7.56M | 6.96M | 19K | -148K | 10K | 74K | -31K | -5.12M | -267K | 52K | 1.88M | -106K | -342K | 5.31M | 2.51M | 202K | 38.95M | 848K | 644K | 1.2M | 3.31M | 180K | 8.3M | 100K | 100K | 0 | 0 |
| Working Capital Changes | -3.32M | 9.62M | -8.73M | -9.19M | -34.01M | -20.43M | -117K | -5.18M | -8.28M | -13.25M | -2.03M | 685K | 5.07M | 1.81M | 7.86M | 4.13M | -21.12M | 4.62M | -3.98M | -36.63M | -9.46M | 6.99M | -2.94M | 15.62M | 7.03M | 20.46M | -22.43M | -25.8M | 3M | -8.2M | -4.2M |
| Change in Receivables | 0 | -7.76M | -483K | 12.64M | -10.59M | -14.3M | -2.82M | 5.71M | -8.83M | -9.21M | 780K | 2.2M | -1.15M | -821K | 4.05M | 7.55M | -11.93M | 2.15M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in Inventory | 0 | 14.71M | 457K | -5.24M | -34.2M | -10.13M | -8.05M | -1.81M | -10.83M | -9.31M | -3.68M | 1.88M | 3.2M | 33K | 5.59M | -162K | -13.93M | 5.29M | -3.31M | -997K | -4.85M | 0 | -4.09M | 8.36M | 0 | 3.51M | -11.43M | -3.6M | -4.4M | -2.3M | 0 |
| Change in Payables | 0 | 0 | -1.84M | -11.15M | 4.4M | 2.5M | 8.67M | -7.34M | 7.45M | 3.19M | 339K | -1.3M | 300K | 4.58M | -1.67M | 0 | 0 | -4.52M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Cash from Investing | -28.16M | -20.32M | -23.6M | -33.45M | -18.97M | -43.66M | -78.82M | -12.48M | -18.24M | -12.53M | -8.52M | -4.27M | -4.03M | -5.08M | -4.08M | 2.53M | 3.77M | -5.91M | 7.18M | 13.9M | 4.39M | -24.7M | -19.17M | -25.6M | -1.96M | -46.24M | -22.35M | -15.7M | -41.8M | -26.4M | -16.4M |
| Capital Expenditures | -28.16M | -20.32M | -23.6M | -33.45M | -63.97M | -47.76M | -28.65M | -12.48M | -18.21M | -12.54M | -8.43M | -9.09M | -7.13M | -6.18M | -7.4M | -7.47M | -12.1M | -10.64M | -8.27M | -9.86M | -5.6M | -9.52M | -5.02M | -5.8M | -10.77M | -22.39M | -16.78M | -14.8M | -38.2M | -20.2M | -14.3M |
| CapEx % of Revenue | 5.97% | 4.98% | 6.57% | 8.26% | 16.03% | 13.29% | 9.66% | 4.75% | 6.25% | 5.51% | 4.21% | 4.13% | 3.16% | 3.1% | 3.38% | 2.95% | 4.83% | 5.38% | 4.02% | 5.03% | 2.92% | 5.31% | 2.93% | 3.83% | 7.06% | 11.43% | 6.52% | 7.79% | 23.21% | 12.45% | 9.86% |
| Acquisitions | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 57K | 14K | -370K | 4.61M | 22K | 0 | 33K | 10K | 421K | 32K | 25K | 129K | 88K | 0 | 6K | 0 | 0 | 0 | 34K | 0 | 0 | 0 | 0 |
| Investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Investing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -28K | 19K | -91K | -204K | -43K | 75K | -81K | -55K | 172K | 322K | -14K | -27K | -176K | 0 | -2.41M | -2.84M | 9.07M | -788K | -4K | -900K | -3.6M | -6.2M | -2.1M |
| Cash from Financing | 20.97M | 6.32M | 7.99M | 10.6M | 4.44M | 10.09M | 121.04M | 4.37M | 8.39M | 3.08M | 1.11M | 604K | 626K | -18.05M | -264K | -6.38M | -11.74M | -1.27M | -13.46M | -11.92M | -16.6M | -6.99M | -2.12M | -1.79M | -1.16M | 1.38M | -22.53M | 15.6M | -15M | 11.5M | -5M |
| Debt Issued (Net) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Equity Issued (Net) | 16.17M | 6.32M | -497K | 10.6M | 4.44M | 10.24M | 109.68M | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Dividends Paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -139K | 0 | 0 | 0 | 0 | -162K | -531K | -378K | -6.27M | -12.51M | 0 | -13.66M | -12.57M | -11.34M | -5.03M | -3.37M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Share Repurchases | -35.17M | -35.17M | -497K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -17.1M | 0 | 0 | 0 | 0 | 0 | 0 | -10.84M | -5.54M | -1.09M | -2.56M | -1.41M | -138K | -32.99M | -8.6M | -17.6M | -700K | -13M |
| Other Financing | 4.79M | 0 | 8.49M | 0 | 0 | -153K | 11.36M | 4.5M | -270K | -225K | -471K | -216K | 626K | -451K | 105K | -557K | -339K | -1.27M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1M | 300K | 0 | -100K |
| Net Change in Cash | 108.15M | 125.53M | 35.05M | 51.61M | 8.19M | 20.68M | 77.07M | 14.11M | 26.33M | -11.94M | -6.81M | 7.79M | -1.15M | -28.21M | 12.65M | 22.63M | 9.05M | 17.59M | 2.62M | -15.84M | 2.16M | -2.25M | -5.45M | -8.15M | 14.64M | -5.43M | -6.19M | 10.2M | -84.9M | -73.6M | -65.2M |
| Free Cash Flow | 87.32M | 119.23M | 27.24M | 41.08M | -41.03M | 7.12M | 6.09M | 9.73M | 17.96M | -15.01M | -7.88M | 2.38M | -4.94M | -10.87M | 9.84M | 18.94M | 4.79M | 14.15M | 798K | -27.68M | 8.73M | 19.75M | 10.86M | 13.63M | 7.06M | 16.78M | 22.09M | -4.7M | -7.4M | 5.9M | 15.4M |
| FCF Margin % | 18.51% | 29.24% | 7.59% | 10.14% | -10.28% | 1.98% | 2.05% | 3.7% | 6.17% | -6.59% | -3.94% | 1.08% | -2.19% | -5.46% | 4.5% | 7.49% | 1.91% | 7.15% | 0.39% | -14.13% | 4.54% | 11.01% | 6.33% | 9% | 4.63% | 8.57% | 8.58% | -2.48% | -4.5% | 3.64% | 10.62% |
| FCF Growth % | 83.81% | 337.7% | -33.68% | 200.12% | -676.22% | 16.93% | -37.39% | -45.85% | 219.66% | -90.37% | -431.68% | 148.15% | 54.58% | -210.43% | -48.04% | 295.35% | -66.15% | 1673.81% | 102.88% | -417.12% | -55.82% | 81.9% | -20.35% | 93.16% | -57.93% | -24.05% | 570.09% | 36.49% | -225.42% | -61.69% | 9.22% |
| FCF per Share | 1.85 | 2.65 | 0.60 | 0.91 | -0.91 | 0.16 | 0.14 | 0.23 | 0.44 | -0.38 | -0.20 | 0.06 | -0.13 | -0.28 | 0.24 | 0.45 | 0.11 | 0.34 | 0.02 | -0.66 | 0.21 | 0.47 | 0.26 | 0.33 | 0.17 | 0.40 | 0.51 | -0.11 | -0.17 | 0.14 | 0.36 |
| FCF Conversion (FCF/Net Income) | 0.64x | 1.18x | 8.30x | 1.39x | 0.90x | 0.97x | 1.94x | 1.58x | 1.14x | -14.75x | -0.09x | 2.33x | -0.16x | 0.20x | -4.23x | 2.99x | 0.51x | 8.86x | -2.52x | -3.34x | -0.48x | 7.47x | -4.27x | -0.99x | -1.12x | -70.07x | 1.15x | 0.53x | 1.95x | 1.00x | 1.16x |
| Interest Paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Taxes Paid | 0 | 0 | 4.3M | 4.15M | 1.26M | 0 | 79K | 2.19M | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
High Customer Concentration Risk
According to recent quarterly filings, Vicor's operating cash flow to net income ratio has fluctuated wildly, reaching a low of -0.19 in 2026Q1, which suggests that reported earnings are frequently decoupled from the actual cash generated by the company's core manufacturing operations.
The significant volatility in the OCF/NI ratio indicates that accounting accruals and non-operating items are playing an outsized role in the company's bottom-line presentation. Investors should monitor this divergence, as it suggests that the reported net income may not be a reliable proxy for the company's ability to fund its own growth through internal cash generation.
As reported in financial statements, Vicor's free cash flow trajectory has been highly inconsistent, swinging from a peak margin of 41.8% in 2025Q2 to a negative 14.5% in 2026Q1, reflecting the lumpy nature of project-based revenue and the high fixed-cost burden of its manufacturing model.
The inability to maintain positive free cash flow across consecutive quarters highlights the sensitivity of the business to shifts in product mix and factory utilization. This erratic performance suggests that the company's cash flow profile remains highly dependent on the timing of large-scale design wins rather than a steady, predictable stream of operational cash.
Based on Vicor's reported figures, working capital changes have been a major source of cash flow instability, with a significant $13.3 million outflow in 2025Q4 following a $15.1 million inflow in 2025Q2, indicating potential inefficiencies in inventory management or collection cycles.
These sharp swings in working capital suggest that the company's build-to-stock strategy for modular components may be creating periodic liquidity pressures. Analysts should investigate whether these fluctuations are driven by strategic inventory builds for anticipated AI demand or by difficulties in aligning production schedules with actual customer delivery requirements.
Data from recent financial disclosures shows that Vicor has utilized cash for share repurchases, including $17.6 million in 2025Q2, even during periods where operating cash flow was highly volatile, which may indicate a management preference for returning capital despite inconsistent internal cash generation.
The decision to prioritize buybacks while simultaneously managing the high capital intensity of the Andover facility warrants further investigation into the company's long-term capital allocation strategy. Investors should consider whether these repurchases are an efficient use of cash given the ongoing need to fund capacity expansion and maintain a competitive technical edge.
Quick answers to the most common questions about buying VICR stock.
Vicor Corporation (VICR) generated $139.5M in net cash from operating activities in 2025. This reflects the cash generated directly from core business operations.
Vicor Corporation (VICR) generated $119.2M in free cash flow in 2025. Free cash flow is the cash left over after capital expenditures, which can be used to pay dividends, repurchase shares, or pay down debt.
Vicor Corporation (VICR) spent $20.3M on capital expenditures in 2025. CapEx represents the cash invested in physical assets like property, plant, and equipment to maintain or grow the business.
In 2025, Vicor Corporation (VICR) spent $35.2M on share repurchases. This shows the company's commitment to returning capital to its equity investors.