$Virtu Financial(VIRT)$ 8-K - Current report Filed: 2018-01-08 AccNo: 0001104659-18-001121 Size: 41 KBItem 1.01: Entry into a Material Definitive AgreementItem 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a RegistrantItem 8.01: Other Even 网页链接