| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 |
| | 10-K/A | 10-K/A | 10-K/A |
| Net income | -755.5 | -214.4 | -94.1 |
| Depreciation and amortization | 15.6 | 3.1 | 1.8 |
| Stock-based compensation | 220.1 | 16.9 | 28.1 |
| Deferred taxes | -4.5 | | -7.8 |
| Change in working capital [+] | -45.3 | 4.2 | -2.4 |
| Accounts receivable | | | 3.3 |
| Other current assets | -9.9 | -11.7 | -6.2 |
| Accounts payable | 0.4 | 2.2 | -0.9 |
| Accrued expenses | -35.8 | 13.7 | 1.4 |
| Other operating activities | 6.3 | -1.6 | -20.4 |
| Cash from operations | -563.3 | -191.9 | -94.7 |
| |
| Capital expenditures [+] | -48.1 | -6.7 | -3.8 |
| Purchases of property and equipment | -48.1 | -6.7 | -3.8 |
| Sales of property and equipment | 3.5 | | 0.0 |
| Acquisitions | 294.4 | | -23.1 |
| Sales of short-term investments, net [+] | | 350.0 | -345.6 |
| Purchases of short-term investments | | -120.0 | -745.6 |
| Sales of short-term investments | | 470.0 | 400.0 |
| Cash from investing | 249.9 | 343.3 | -372.5 |
| |
| Issuance of common stock, net | 762.6 | 2.7 | 0.3 |
| Other cash from financing | 777.2 | -1.2 | 634.4 |
| Cash from financing | 1,539.8 | 1.4 | 634.7 |
| |
| Free cash flow | -611.3 | -198.6 | -98.6 |
| Per share (diluted) | ($0.98) | ($0.73) | ($0.39) |