(Bloomberg) -- Oxford Nanopore Technologies Plc, the DNA-sequencing firm whose shares have plunged since going public, is setting its sights on FTSE 250 index inclusion that would widen the pool of potential investors.Most Read from BloombergHow Air Conditioning Took Over the American OfficeA Guide to Urban Swimming in Europe, Beyond the Seine"We're in the process of getting ourselves into the FTSE 250," Chief Executive Officer Gordon Sanghera said in an interview. "Increased liquidity will be v