Free cash flow remains volatile due to project-based cycles, yet the company continues to prioritize shareholder returns, allocating $160.0 million to share repurchases in 2026Q2.
| Metric | TTM | Nov'25 | Nov'24 | Oct'23 | Oct'22 | Oct'21 | Oct'20 | Oct'19 | Oct'18 | Oct'17 | Oct'16 | Oct'15 | Oct'14 | Oct'13 | Oct'12 | Oct'11 | Oct'10 | Oct'09 | Oct'08 | Oct'07 | Oct'06 | Oct'05 | Oct'04 | Oct'03 | Oct'02 | Oct'01 | Oct'00 | Oct'99 | Oct'98 | Oct'97 |
|---|
| Cash from Operations | 1.03B | 806.09M | 514.53M | 168.33M | -167.76M | 541.65M | 493.65M | 413.14M | 229.26M | 234.88M | 289.52M | 262.11M | 89.82M | 44.68M | 107.09M | -90.48M | -229.01M | 7.42M | 117.62M | 108.74M | -79.39M | -230.27M | -245.44M | -241.16M | -25.5M | 156.99M | 59.04M | 17.7M | 35.5M | 80.1M |
| Operating CF Margin % | - | 16.9% | 12.82% | 3.84% | -4.62% | 14.96% | 13.98% | 11.57% | 7.41% | 8.38% | 11.13% | 10.72% | 3.92% | 2.15% | 5.84% | -5.19% | -18.52% | 1.14% | 13.03% | 13.95% | -14.08% | -53.9% | -82.17% | -85.17% | -7.06% | 9.79% | 6.87% | 3.67% | 6.99% | 19.39% |
| Operating CF Growth % | 400.56% | 56.67% | 205.66% | 200.34% | -130.97% | 9.72% | 19.49% | 80.21% | -2.39% | -18.87% | 10.46% | 191.83% | 101.03% | -58.28% | 218.35% | 60.49% | -3185.97% | -93.69% | 8.16% | 236.97% | 65.52% | 6.18% | -1.77% | -845.57% | -116.25% | 165.91% | 233.55% | -50.14% | -55.68% | - |
| Net Income | 438.3M | 123.34M | 83.96M | 254.83M | 152.9M | 500.2M | 361.29M | 253.43M | -344.69M | 1.26B | 72.58M | 11.67M | -40.64M | -85.43M | -144.02M | -195.52M | -333.51M | -581.15M | 38.89M | 82.79M | 595K | -386.52M | -789.46M | -386.52M | -1.6B | -1.79B | 81.39M | -3.9M | 53.2M | 112.9M |
| Depreciation & Amortization | 183.86M | 140.34M | 133.47M | 142.18M | 140.2M | 132.27M | 132.53M | 122.71M | 110.02M | 122.9M | 141.69M | 135.77M | 112.77M | 127.01M | 133.6M | 156.08M | 169.81M | 53.36M | 56.55M | 27.86M | 44.63M | 113.94M | 133.84M | 146.39M | 711.66M | 2.05B | 64.62M | 52.2M | 33.8M | 10.2M |
| Stock-Based Compensation | 16.53M | 184.53M | 156.4M | 130.46M | 105.13M | 84.34M | 67.76M | 59.74M | 52.97M | 48.36M | 51.99M | 55.34M | 42.93M | 37.72M | 32.39M | 37.93M | 35.56M | 34.44M | 31.43M | 14.04M | 1.89M | 0 | 11.88M | 70.55M | 589.61M | 1.95B | 0 | 0 | 0 | 0 |
| Deferred Taxes | -23.27M | -23.17M | -76.81M | -14.85M | -27.5M | -156.47M | 64.34M | 19.86M | 463.63M | -1.13B | 49.2M | 44.73M | 54.46M | 73.13M | 63.46M | 183K | 700K | -883K | 1.64M | -11.5M | 143K | 0 | -11.88M | -70.55M | 186.86M | -6.63M | -117.64M | 0 | -6.2M | 0 |
| Other Non-Cash Items | 278.94M | 161.23M | 114.75M | 52.47M | 33.62M | 49.47M | 67.6M | 57.02M | 98.1M | 84.06M | 25.51M | -1.02M | 25.67M | 9.02M | 7.12M | 30.91M | 10.65M | 497.14M | 40.2M | 57.51M | 31.26M | 107.85M | 458.9M | 76.78M | -168.22M | -1.74B | 204.12M | 25.3M | 32M | 20.6M |
| Working Capital Changes | 138.4M | 219.84M | 102.76M | -396.75M | -572.11M | -68.15M | -199.86M | -99.63M | -150.77M | -155.66M | -51.46M | 15.63M | -105.37M | -116.77M | 14.54M | -120.07M | -112.22M | 4.51M | -51.09M | -61.96M | -157.9M | -65.54M | -48.72M | -77.81M | 252.09M | -304.29M | -173.44M | -55.9M | -77.3M | -63.6M |
| Change in Receivables | -149.44M | -98.74M | 80.31M | -94.56M | -47.07M | -174.38M | -17.3M | 65.71M | -168.36M | -66.12M | -26.07M | -9.5M | -33.16M | -145.42M | 70.37M | -75.62M | -218.2M | 20.1M | -32.47M | -34.39M | 0 | 0 | -2.56M | -14.19M | 358.49M | -139.53M | 0 | 0 | 0 | 0 |
| Change in Inventory | -1.39M | -53.6M | 153.02M | -132.5M | -589.11M | -47.57M | -25.04M | -112.94M | -27.45M | -91.57M | -53M | 49.5M | -37.89M | -8.94M | -53.46M | 14.21M | -40.96M | -10.35M | 3.71M | -8.71M | -65.76M | 9.22M | 962K | 9.22M | -27.81M | -177.48M | -76.69M | -15.2M | -39.4M | -35.5M |
| Change in Payables | 97.48M | 226.49M | 64.25M | -138.47M | 100.33M | 162.13M | -117.93M | 27.74M | 85.8M | 33.9M | 7.15M | -29.2M | -59.84M | 115.31M | 12.61M | -59.28M | 180.81M | -23.95M | -23.95M | -59.16M | 0 | 0 | -67.67M | -78.75M | 6.28M | 8.65M | 0 | 0 | 0 | 0 |
| Cash from Investing | -390.83M | -241.5M | -306.48M | -383.45M | -101.25M | -90.72M | -220.24M | 24.08M | -19.27M | -61.43M | -296.26M | -43.13M | -106.39M | -130.86M | -11.98M | -68.57M | -198.89M | -74.19M | 91.25M | 80.13M | -251.59M | 291.66M | 170.71M | 302.55M | 236.61M | -1.49B | -103.17M | -149.7M | -104.5M | -66.6M |
| Capital Expenditures | -200.11M | -140.8M | -136.64M | -106.2M | -90.82M | -79.55M | -82.67M | -62.58M | -67.62M | -94.6M | -107.19M | -62.11M | -48.22M | -43.81M | -48.1M | -52.37M | -51.21M | -24.11M | -30M | -32.1M | -17.76M | -29.54M | -33M | -29.54M | -66.33M | -238.54M | -123.95M | -46.8M | -86.4M | -66.6M |
| CapEx % of Revenue | 3.59% | 2.95% | 3.4% | 2.42% | 2.5% | 2.2% | 2.34% | 1.75% | 2.19% | 3.38% | 4.12% | 2.54% | 2.11% | 2.1% | 2.62% | 3.01% | 4.14% | 3.69% | 3.32% | 4.12% | 3.15% | 6.91% | 11.05% | 10.43% | 18.37% | 14.88% | 14.43% | 9.71% | 17% | 16.12% |
| Acquisitions | -231.1M | -231.1M | 0 | -230.05M | -62.04M | 4.68M | -28.3M | -2.67M | -82.67M | 0 | -32M | 37.21M | 0 | 0 | 0 | 16.39M | -693.25M | -210.02M | -210.02M | 0 | 0 | 1.06M | 4.86M | -29.67M | 286.9M | 54.1M | 0 | 0 | 0 | 0 |
| Investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Investing | -3.01M | -4.01M | -1.45M | -2.98M | 0 | 0 | 0 | 0 | 117K | -54K | 11K | -40K | 2.06M | 2.34M | 35.6M | 10.75M | 0 | 210.02M | 1.34M | -13.28M | 4.55M | -44.67M | -2.55M | 0 | -10M | -13.01M | 0 | 100K | -2.1M | 0 |
| Cash from Financing | -704.43M | -405.92M | -285.06M | 229.38M | -133.06M | -116.83M | -87.22M | -278.97M | -99.23M | -311.05M | -4.23M | -8.05M | 258.53M | -207.34M | 7.94M | 13.2M | 630.2M | 1.11M | -549.57M | 482.58M | 193.13M | -128.92M | -32.32M | -128.92M | -231.8M | 1.59B | 43.88M | 24.8M | 27.8M | 227.1M |
| Debt Issued (Net) | -15.01M | -15.96M | -15.73M | 485.11M | 391.33M | -9.93M | -7.9M | -10.32M | -4.68M | -330.74M | -23.33M | -37.91M | 245.09M | -219.54M | -1.9M | 0 | 648.93M | 0 | -543.3M | 488.25M | 201.59M | -36.87M | -49.14M | -144.63M | -254.67M | 676.75M | -279K | 1.6M | -800K | -2.3M |
| Equity Issued (Net) | -328.59M | -298.63M | -266.78M | -249.35M | -549.25M | -106.9M | -78.94M | -156.19M | -92.61M | 20.41M | 23.09M | 30.27M | 17.66M | 15.9M | 12.17M | 13.2M | 1.57M | 1.11M | 5.78M | -5.67M | -470K | 9.56M | 16.78M | 13.8M | 15.14M | 907.03M | 43.98M | 11.3M | 28.4M | 228.5M |
| Dividends Paid | 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 |
| Share Repurchases | -364.56M | -334.51M | -301.07M | -280.71M | -549.25M | -135.36M | -107.01M | -179.13M | -115.74M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -42.5M | -28.46M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Financing | -360.83M | -91.33M | -2.55M | -6.38M | 24.86M | 0 | -382K | -112.46M | -1.94M | -722K | -3.99M | -421K | -4.23M | -3.69M | -2.33M | 0 | -20.3M | 0 | -12.04M | 0 | -7.99M | -101.61M | 47K | 1.92M | 7.73M | 4.58M | 180K | 11.9M | 200K | 900K |
| Net Change in Cash | -68.28M | 157.09M | -75.76M | 16.41M | -428.23M | 333.9M | 184.55M | 158.73M | 104.91M | -137.1M | -13.36M | 204.25M | 240.23M | -295.96M | 100.55M | -146.79M | 202.98M | -64.96M | -341.39M | 671.9M | -137.85M | -67.52M | -107.04M | -67.52M | -20.7M | 254.7M | -253K | -107.3M | -41.2M | 240.6M |
| Free Cash Flow | 832.66M | 665.29M | 377.89M | 62.13M | -258.57M | 462.1M | 410.99M | 350.56M | 161.65M | 140.28M | 182.34M | 200M | 41.6M | 864K | 58.99M | -142.85M | -280.22M | -16.69M | 87.62M | 76.64M | -97.15M | -259.81M | -278.43M | -270.7M | -91.83M | -81.55M | -64.91M | -29.1M | -50.9M | 13.5M |
| FCF Margin % | 14.95% | 13.95% | 9.41% | 1.42% | -7.12% | 12.76% | 11.64% | 9.81% | 5.22% | 5.01% | 7.01% | 8.18% | 1.82% | 0.04% | 3.22% | -8.2% | -22.66% | -2.56% | 9.71% | 9.83% | -17.22% | -60.81% | -93.21% | -95.61% | -25.43% | -5.09% | -7.56% | -6.04% | -10.02% | 3.27% |
| FCF Growth % | 185.27% | 76.05% | 508.18% | 124.03% | -155.96% | 12.44% | 17.24% | 116.87% | 15.23% | -23.06% | -8.83% | 380.78% | 4714.81% | -98.54% | 141.3% | 49.02% | -1578.65% | -119.05% | 14.33% | 178.88% | 62.61% | 6.69% | -2.86% | -194.77% | -12.61% | -25.64% | -123.06% | 42.83% | -477.04% | - |
| FCF per Share | 5.69 | 4.58 | 2.59 | 0.42 | -1.70 | 2.95 | 2.64 | 2.22 | 1.12 | 0.83 | 1.21 | 1.67 | 0.39 | 0.01 | 0.59 | -1.49 | -3.01 | -0.18 | 0.79 | 0.77 | -1.14 | -3.16 | -3.74 | -4.24 | -1.76 | -1.83 | -1.52 | -0.76 | -1.39 | 0.46 |
| FCF Conversion (FCF/Net Income) | 1.90x | 6.54x | 6.13x | 0.66x | -1.10x | 1.08x | 1.37x | 1.63x | -0.67x | 0.19x | 3.99x | 22.47x | -2.21x | -0.52x | -0.74x | 0.46x | 0.69x | -0.01x | 3.02x | 1.31x | -133.43x | 0.53x | 0.31x | 0.62x | 0.02x | -0.09x | 0.73x | -4.54x | 0.67x | 0.69x |
| Interest Paid | -2.22M | 85.22M | 92.52M | 84.47M | 42.81M | 29.86M | 32.84M | 39.58M | 44.75M | 47.23M | 46.9M | 40.77M | 36.28M | 32.4M | 33.51M | 32.93M | 12.25M | 4.75M | 15.34M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Taxes Paid | -6.64M | 113.61M | 54.96M | 78.24M | 34.97M | 73.13M | 53.08M | 33.57M | 26.9M | 22.14M | 15.27M | 10.67M | 11.4M | 10.68M | 9.6M | 3.2M | 1.71M | 584K | 3.12M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Cyclical carrier spending volatility
As reported in financial statements, Ciena's operating cash flow to net income ratio has fluctuated wildly, reaching a high of 19.04 in 2025Q4, which suggests that GAAP net income is a poor proxy for the company's actual cash-generating capacity during periods of significant working capital movement.
The persistent gap between net income and operating cash flow indicates that non-cash charges and working capital swings heavily influence reported profitability. Investors should monitor this divergence, as it suggests that earnings quality is highly sensitive to the timing of project-based revenue recognition and inventory management.
Based on EDBL's reported figures, free cash flow has demonstrated significant volatility, ranging from a deficit of $179.0 million in 2024Q3 to a peak of $265.8 million in 2024Q4, highlighting the inherent instability of cash generation in a project-heavy, hardware-centric business model.
The erratic FCF trajectory appears tied to the lumpy nature of large-scale telecommunications deployments. This inconsistency warrants caution, as it implies that short-term cash flow performance may not be indicative of long-term structural profitability or the company's ability to sustain consistent shareholder returns.
According to recent SEC filings, working capital changes have been a primary driver of cash flow variance, with a massive $241.8 million inflow in 2024Q4 followed by a $251.7 million outflow in 2024Q3, underscoring the company's vulnerability to timing differences in customer payments and inventory procurement.
These dramatic swings suggest that Ciena's cash position is heavily dependent on the efficiency of its supply chain and the payment terms negotiated with Tier-1 carriers. The reliance on large, infrequent cash inflows suggests that liquidity management remains a critical operational challenge for the firm.
As disclosed in quarterly filings, Ciena has consistently prioritized share repurchases, allocating $160.0 million in 2026Q2 alone, even as operating cash flow remains subject to significant quarterly fluctuations, suggesting a management preference for returning capital over maintaining a static cash buffer.
The commitment to buybacks during periods of inconsistent cash flow may indicate management's confidence in the long-term demand for their optical transport technology. However, investors should monitor whether this capital allocation strategy limits the firm's flexibility to pursue strategic acquisitions or weather potential downturns in carrier spending.
Quick answers to the most common questions about buying CIEN stock.
Ciena Corporation (CIEN) generated $806.1M in net cash from operating activities in 2025. This reflects the cash generated directly from core business operations.
Ciena Corporation (CIEN) generated $665.3M 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.
Ciena Corporation (CIEN) spent $140.8M 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, Ciena Corporation (CIEN) spent $334.5M on share repurchases. This shows the company's commitment to returning capital to its equity investors.