| In millions, except per share items | Jun-30-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | | -53.9 | -75.6 | -66.8 | -80.4 | -88.6 | -79.2 | -85.5 |
| Depreciation and amortization [+] | | 1.1 | 1.2 | 1.2 | 1.3 | 1.3 | 1.2 | 1.2 |
| Amortization of intangible assets | | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 | 0.3 |
| Stock-based compensation | | 9.1 | 11.1 | 9.1 | 7.4 | 5.9 | 10.5 | 9.4 |
| Deferred taxes | | -0.3 | -0.3 | -0.3 | -0.2 | -0.2 | 0.1 | -0.1 |
| Change in working capital [+] | | 4.8 | -9.8 | 7.5 | 6.2 | 12.2 | 9.2 | 5.2 |
| Accounts receivable | | -2.9 | 1.0 | -2.9 | 0.9 | 0.5 | -0.3 | 1.1 |
| Other current assets | | 0.8 | -9.8 | 0.8 | -0.6 | 3.5 | 0.2 | -2.9 |
| Accounts payable | | 7.5 | -0.9 | 7.5 | -2.3 | 0.5 | 0.3 | -0.1 |
| Accrued expenses | | -0.6 | -0.1 | 2.1 | 8.2 | 7.7 | 9.1 | 7.0 |
| Other operating activities | | -93.7 | -51.9 | -10.4 | 13.3 | 28.5 | 22.9 | -10.0 |
| Cash from operations | | -132.8 | -125.4 | -59.6 | -52.4 | -41.0 | -35.3 | -79.9 |
| |
| Capital expenditures | | 2.6 | -0.5 | -0.4 | -0.4 | -0.5 | -1.3 | -1.3 |
| Purchases of property and equipment | | 2.6 | -0.5 | -0.4 | -0.4 | -0.5 | -1.3 | -1.3 |
| Purchases of short-term investments, net | | -29.1 | -122.3 | -124.2 | -102.5 | 25.4 | 1.1 | -0.2 |
| Purchases of short-term investments | | -71.0 | -200.6 | -166.1 | -172.2 | -13.0 | -70.4 | -66.8 |
| Sales of short-term investments | | 41.9 | 78.3 | 41.9 | 69.8 | 38.5 | 71.5 | 66.6 |
| Other cash from investing | | -120.1 | | | | -22.1 | | |
| Cash from investing | | -146.6 | -144.9 | -146.6 | -125.0 | 2.8 | -0.2 | -1.5 |
| |
| Issuance of common stock, net | | | | 248.9 | | 167.8 | 167.5 | 38.1 |
| Option exercises | | 11.8 | 13.6 | 17.4 | 9.6 | 7.3 | 5.5 | 1.4 |
| Other cash from financing | | 71.2 | 26.4 | 50.5 | 35.5 | 30.6 | 27.6 | 2.9 |
| Cash from financing | | 178.7 | 132.4 | 282.0 | 193.7 | 191.1 | 189.5 | 39.5 |
| |
| Free cash flow | | -130.2 | -125.9 | -60.0 | -52.8 | -41.5 | -36.6 | -81.2 |
| Per share (diluted) | | ($3.17) | ($3.17) | ($1.58) | ($1.48) | ($1.25) | ($1.18) | ($2.79) |
| |
| Cash paid for income taxes | | | | -0.6 | 0.1 | 0.1 | -0.3 | -0.3 |