UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q Title of each class Trading symbol Name of each exchange on which registered Common stock, $0.001 par value ARCC NASDAQ Global Select Market 6.875$0.001 par value 422,622,119 ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR o TR ...