NEW YORK–(BUSINESS WIRE)–MEMX Group, a technology-driven exchange operator founded by members to benefit all investors, today announced the successful launch and first day of trading on MX2 Options, its new customer priority, pro-rata options exchange. MX2 Options expands MEMX Group’s options trading capabilities by providing market participants with access to a customer priority, pro-rata allocation model, enabling a size-based approach to order execution and providing additional ways to sou