flatexDEGIRO SE, together with its subsidiaries, provides online brokerage and IT solutions for banking and securities in Europe. It operates through two segments, flatex and DEGIRO, offering execution-only securities transactions under the flatex brand, and funds, saving plans, stocks, crypto, exchange-traded products, and exchange-traded funds, as well as services for professional traders under the ViTrade brand. The company also provides securities settlement and payment transaction processing, business process outsourcing, securities-backed loans, and treasury products such as overnight and fixed-term deposits, bank and government bonds, cash loans, and mortgage bonds, along with undertakings for collective investment in transferable securities and special funds. In addition, it develops and maintains software and hardware and operates information technology infrastructure, and offers Core Banking System, a platform for mapping bank business processes. The company was formerly known as flatexDEGIRO AG and changed its name to flatexDEGIRO SE in December 2025. It was founded in 1999 and is based in Frankfurt am Main, Germany.