| In millions, except per share items | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 | Mar-31-20 | Dec-31-19 | Sep-30-19 | Jun-30-19 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -89.9 | -74.8 | -67.0 | -56.2 | -43.0 | -36.3 | -32.3 | -32.1 |
| Depreciation and amortization [+] | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Depreciation | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Stock-based compensation | 5.2 | 5.0 | 4.9 | 4.5 | 3.8 | 3.3 | 2.8 | 2.6 |
| Deferred taxes | 0.0 | 0.0 | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Change in working capital [+] | -8.2 | -5.1 | -0.7 | 4.4 | 18.4 | 17.0 | 16.7 | 19.2 |
| Accounts receivable | -1.0 | -0.5 | -0.2 | | | | | |
| Inventories | -14.3 | -10.9 | -8.9 | | | | | |
| Other current assets | -1.2 | -2.4 | -2.4 | -2.6 | -3.7 | -1.4 | -0.7 | 1.0 |
| Other | 8.3 | 8.7 | 10.8 | 7.0 | 22.1 | 18.4 | 17.4 | 18.2 |
| Other operating activities | 9.3 | -0.7 | -1.3 | -0.6 | -18.9 | -19.0 | -19.1 | -19.2 |
| Cash from operations | -83.4 | -75.3 | -64.0 | -47.9 | -39.7 | -35.0 | -31.9 | -29.4 |
| |
| Capital expenditures | -0.1 | -0.4 | -0.5 | -0.6 | -0.6 | -0.3 | -0.1 | 0.0 |
| Purchases of property and equipment | -0.1 | -0.4 | -0.5 | -0.6 | -0.6 | -0.3 | -0.1 | 0.0 |
| Purchases of short-term investments, net | -53.9 | -55.5 | -0.8 | 23.0 | -12.5 | -35.4 | -45.5 | 3.9 |
| Purchases of short-term investments | -155.4 | -145.3 | -95.6 | | -96.4 | -99.7 | -101.7 | -60.8 |
| Sales of short-term investments | 101.5 | 89.9 | 94.8 | 91.3 | 83.9 | 64.4 | 56.3 | 64.7 |
| Cash from investing | -54.0 | -55.8 | -1.3 | 22.3 | -13.1 | -35.7 | -45.6 | 3.9 |
| |
| Issuance of common stock, net | | | | | | | 0.0 | 32.2 |
| Option exercises | 0.1 | 0.3 | 0.3 | 0.3 | 0.3 | 0.1 | 0.1 | 0.1 |
| Other cash from financing | 139.8 | 139.6 | 139.1 | 109.6 | 85.5 | 85.5 | 86.1 | 0.1 |
| Cash from financing | 139.7 | 139.3 | 138.8 | 77.1 | 85.2 | 85.5 | 86.0 | 32.3 |
| |
| Free cash flow | -83.5 | -75.7 | -64.6 | -48.5 | -40.2 | -35.3 | -32.0 | -29.4 |
| Per share (diluted) | ($1.53) | ($1.53) | ($1.43) | ($1.23) | ($1.10) | ($1.10) | ($1.08) | ($1.12) |
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