oʊʃˈɔːnəsi kəntˈɪnjuːd tʊ ɐplˈaɪ hɪz ɹᵻsˈɜːtʃ ʌvðə stˈɑːk mˈɑːɹkɪt, ænd ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti fˈoːɹ, hɪz fˈɜːst bˈʊk, ɪnvˈɛst lˈaɪk ðə bˈɛst, wʌz pˈʌblɪʃt, fˈɑːloʊd baɪ ðə fˈɜːst ᵻdˈɪʃən ʌv wʌt wˈɜːks ˌɔn wˈɔːl stɹˈiːt ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti sˈɛvən, hˌaʊ tə ɹᵻtˈaɪɚ ɹˈɪtʃ ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti ˈeɪt, ænd pɹɪdˈɪktɪŋ ðə mˈɑːɹkɪts ʌv təmˈɑːɹoʊ ɪn tˈuː θˈaʊzənd sˈɪks.
O'Shaughnessy continued to apply his research of the stock market, and in 1994, his first book, Invest Like the Best, was published, followed by the first edition of What Works on Wall Street in 1997, How to Retire Rich in 1998, and Predicting the Markets of Tomorrow in 2006.