Hello Billicare, Sierrachart is your trading platform as you said. And also work with Leeloo Trading. What is your experience with Sierra + Rithmic + Leeloo? Is Sierrachart stable at the moment with Rithmic? I also started with Leeloo but with NT8 (not my thing) and will switch back to SC! I have been working with Sierrachart for 6 years. Greeting Thomas