| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 |
| | 10-K | 10-K | 10-K |
| Net income | -570.3 | -213.8 | -118.7 |
| Depreciation and amortization | 1.4 | 1.4 | 0.1 |
| Stock-based compensation | 193.6 | 65.6 | 29.5 |
| Change in working capital [+] | -28.6 | 1.8 | 14.6 |
| Other current assets | -41.3 | -9.1 | -2.4 |
| Accounts payable | 5.9 | 1.0 | 0.2 |
| Accrued expenses | 6.8 | 7.9 | 14.9 |
| Other | | 1.9 | 1.9 |
| Other operating activities | 106.3 | -0.8 | -1.4 |
| Cash from operations | -297.7 | -145.8 | -76.0 |
| |
| Capital expenditures | -6.1 | -0.9 | -1.1 |
| Purchases of property and equipment | -6.1 | -0.9 | -1.1 |
| Acquisitions | 93.7 | | |
| Purchases of short-term investments | -259.7 | | |
| Purchases of short-term investments | -259.7 | | |
| Other cash from investing | -132.7 | 1.9 | -1.6 |
| Cash from investing | -304.8 | 0.9 | -2.7 |
| |
| Issuance of common stock, net | 283.8 | | |
| Other cash from financing | 483.8 | 138.4 | 152.2 |
| Cash from financing | 767.6 | 138.4 | 152.2 |
| |
| Free cash flow | -303.8 | -146.8 | -77.1 |
| Per share (diluted) | ($6.79) | ($3.73) | ($1.96) |
| |
| Cash paid for interest | | 0.1 | |
| Cash paid for income taxes | 38.2 | 16.6 | 2.8 |