In 2014, Associated Press (AP) launched a "Robo-journalism" scheme to generate automated financial reports with public financial information. I exploit this natural experiment to examine the effect dissemination of public information on financial market with a difference-in-difference approach. I find that reporting easy-to-read corporate public information for retail investors has real effect. On one hand, liquidity of automated reported stocks increases. On the other hand, stock price incorporates relatively more systematic information compared to firm-specific information after the automation. Institutional investor ownership also increases signicantly after the event.