CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 844,223	$ 754,154
Short-term investments, net	260,347	204,625
Accounts receivable, net of allowance for credit losses of $8,040 and $7,374 as of March 31, 2022 and December 31, 2021, respectively	1,760,985	2,020,720
Prepaid expenses and other current assets	89,784	112,150
TOTAL CURRENT ASSETS	2,955,339	3,091,649
Property and equipment, net	130,640	135,856
Operating lease assets	228,991	234,091
Deferred income taxes	73,548	68,244
Other assets, non-current	44,203	47,500
TOTAL ASSETS	3,432,721	3,577,340
Current liabilities:
Accounts payable	1,405,673	1,655,684
Accrued expenses and other current liabilities	92,903	101,472
Operating lease liabilities	47,226	46,149
TOTAL CURRENT LIABILITIES	1,545,802	1,803,305
Operating lease liabilities, non-current	229,489	238,449
Other liabilities, non-current	8,327	8,280
TOTAL LIABILITIES	1,783,618	2,050,034
Commitments and contingencies (Note 10)
STOCKHOLDERS’ EQUITY
Preferred stock, par value $0.000001; 100,000 shares authorized, zero shares issued and outstanding as of March 31, 2022 and December 31, 2021
Common stock, par value $0.000001 Class A, 1,000,000 shares authorized; 441,791 and 439,206 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively Class B, 95,000 shares authorized; 44,235 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	0	0
Additional paid-in capital	1,051,572	915,177
Retained earnings	597,531	612,129
TOTAL STOCKHOLDERS’ EQUITY	1,649,103	1,527,306
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 3,432,721	$ 3,577,340