Bengaluru-based bike-sharing startup Bounce is reportedly raising $200 million, with the majority of the funding slated to come from Accel US and Facebook Co-founder Eduardo Saverin's investment firm B Capital. Existing investors Flipkart Co-founder Sachin Bansal-led BACQ, Sequoia India, Qualcomm and others may also participate. Bounce has reportedly already closed $120 million of the target.