SEBI Whole-Time Member Ananth Narayan, a 56-year-old former trader-turned-regulator, was reportedly behind the probe into a ₹36,500-crore market manipulation case against US trader Jane Street, one of the world's most-secretive trading firms. Before SEBI, Narayan spent over two decades at international banks like Deutsche Bank and Citigroup. Even RBI consulted him to understand market dynamics.