(Bloomberg) -- A Two Sigma Investments quantitative researcher is pushing back against claims that his misconduct resulted in $170 million in client losses.Most Read from BloombergManchester United Saga Ends With $1.3 Billion Ratcliffe DealTrump Tells Appeals Panel He Should Have ‘Absolute Immunity’US Accuses Iran of Indian Ocean Attack as Shipping Threat GrowsNigeria Seeks Control of Banks Linked to Ex Central BankerWall Street Learns That This Year, Nothing Beat Owning the S&P 500The firm told