O'Shaughnessy has authored several books that use Standard & Poor's Compustat database to provide extensive quantitative analysis of stock market performance.
oʊʃˈɔːnəsi hɐz ˈɔːθɚd sˈɛvɹəl bˈʊks ðæt jˈuːs stˈændɚd ænd pˈʊɹz kəmpˈʌstæt dˈeɪɾəbˌeɪs tə pɹəvˈaɪd ɛkstˈɛnsɪv kwˈɔntᵻtˌeɪɾɪv ɐnˈæləsˌɪs ʌv stˈɑːk mˈɑːɹkɪt pɚfˈoːɹməns.