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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 93,056 | $ 126,472
Marketable securities | 77,793 | 89,284
Accounts receivable | 11,806 | 12,744
Prepaid expenses and other current assets | 12,630 | 11,285
Total current assets | 195,285 | 239,785
Property, equipment and software, net | 46,318 | 48,211
Other assets | 23,810 | 24,505
Total assets | 265,413 | 312,501
Current liabilities: |  |
Accounts payable | 1,956 | 4,308
Accrued expenses and other current liabilities | 25,060 | 27,139
Deferred revenue | 9,506 | 10,700
Lease liabilities | 3,088 | 3,020
Total current liabilities | 39,610 | 45,167
Deferred revenue, net of current portion | 8,100 | 9,153
Lease liabilities, net of current portion | 26,615 | 27,553
Other non current liabilities | 515 | 0
Total liabilities | 74,840 | 81,873
Stockholders' equity: |  |
Common stock, $0.01 par value -- 125,000,000 shares authorized, 49,131,150 and 48,958,763 shares outstanding at March 31, 2020 and December 31, 2019, respectively | 492 | 490
Additional paid-in capital | 876,815 | 872,204
Accumulated other comprehensive income | 72 | 16
Accumulated deficit | (686,806) | (642,082)
Total stockholders' equity | 190,573 | 230,628
Total liabilities and stockholders' equity | $ 265,413 | $ 312,501

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