2021 2020 2019 2018 Operating Cash Flow $333.85M$-296.61M$-165.22M$-39.01M Net Income $-520.38M$-1.17B$-579.65M$-580.03M Depreciation & Amortization $14.9M$13.87M$12.26M$13.91M Deferred Income Tax $43.32M$0$0$0 Stock-Based Compensation $778.22M$1.27B$241.97M$248.5M Change In Working Capital $-92.05M$-454.12M$134.03M$302.57M Other Non-Cash Items $109.85M$39.33M$26.18M$-23.97M Cash From Investing $-397.91M$-14.92M$-21.96M$-6.78M Purchases Of Investments $-382.26M$-2.93M$0$0 Sales / Maturities of Investments $0$0$0$0 Property, Plant & Equipment Investments $-12.63M$-12.24M$-13.1M$-13M Net Acquisitions $0$0$0$0 Other Investing Activites $-3.02M$250K$-8.87M$6.22M Cash From Financing $306.75M$1.04B$324.53M$46.15M Debt Repayment $-200M$-400M$-150M$-56.49M Dividend Payments $0$0$0$0 Payout Ratio 0%0%0%0% Net Common Stock Repurchased $0$-938.75M$93.08M$-88.77M Common Stock Repurchased $0$-3.78M$-193.07M$-7.71M Common Stock Issued $0$-938.75M$93.08M$-88.77M Other Financing Activites $506.75M$497.7M$567.61M$13.87M Accounts Receivables $-35.24M$-108.48M$-23.91M$-10.48M Accounts Payables $57.77M$-34.68M$23.42M$10.97M Inventory $0$0$0$0 Other Working Capital $-80.21M$-261.78M$141.42M$298.45M Capital Expenditure (CAPEX) $-12.63M$-12.24M$-13.1M$-13M Effect Of Foreign Exchange On Cash $-3.92M$1.26M$-2.23M$-3.7M Net Change In Cash $238.77M$726.18M$135.13M$-3.35M Free Cash Flow (FCF) $321.22M$-308.84M$-178.31M$-52.02M Free Cash Flow To Equity (FCFE) $121.22M$-708.84M$-328.31M$-108.51M