Former Apollo Global Management LLC partner Sachin Khajuria has started a firm using data and artificial intelligence to help find and evaluate debt and equity investments, a person with knowledge of the matter said. Achilles Management LP, based in New York, has been investing Khajuria’s personal money after he left the private equity giant last year, said the person, who asked not to be identified because the information is private. Khajuria, 41, may seek outside capital in the future, the person said.