CEO Interviews on CNBC
November 5, 2013 Leave a comment
CEO Interviews on CNBC
Y. Han (Andy) Kim Nanyang Technological University (NTU)
Felix Meschke University of Kansas – Finance Area
October 9, 2013
Abstract:
We investigate whether media attention systematically affects stock prices through the trading of individual investors by exploiting the substantial discrepancy between perceived and actual information content of 6,937 CEO interviews on CNBC. The average cumulative abnormal stock return over the [-2, 0] trading day window is 1.62%, yet prices exhibit strong reversion of 1.08% over the following ten trading days. The magnitude of price response is positively correlated with the viewership as well as the language tone of the CEO. We find that individual investors are net buyers on the interview days, and that they keep on buying if the interview was both carried out by attractive anchorwoman and was watched by more male viewers. The price reversal is attributable to abnormal short-selling volume on interview day. Moreover, we find that the price run-up before the interviews is largely driven by individual investors that are excited even at the pre-announcement of the interview. We also find evidence of asymmetric attention cascade coming from CNBC interview upon the tone of media coverage of the firm, tilted towards the negative.
Stocks Go up More When CEOs Interviewed By Anchorwomen [STUDY]
by ValueWalk StaffNovember 4, 2013
Media reporting may impact stock prices beyond the dissemination of new information. According to the visibility hypothesis, media attention alone can permanently increase a firm’s value by broadening its investor base (Merton, 1987; Miller, 1977). Huberman and Regev (2001) analyze the puzzling case of a New York Times article, which did not contain any new facts but caused a dramatic rise in the stock price of interviews a small biotech company. They attribute EntreMed Inc (NASDAQ:ENMD)’s astounding market reaction to the article’s prominent position on the front page and to its optimistic tone and content that enthusiastic public attention can move stock prices away from fundamental values, possibly contributing to the formation of asset pricing bubbles.
Any empirical study that investigates the causal impact of media attention upon stock prices has to overcome three obstacles. First, it should move beyond anecdotal evidence and examine whether media attention systematically affects stock prices. Second, it has to separate attention from information effects. Finally, it should delineate the mechanism by which attention affects stock prices to assess whether media-generated attention indeed distorts security prices
(Engelberg and Parsons, 2011).
We believe that we can overcome these three obstacles by studying market reactions to almost 7,000 CEO interviews that were broadcast on the cable television channel CNBC between 1997 and 2006. The large number of interviews allows us to investigate whether media attention systematically affect stock prices. We can separate attention from information effects in a similar manner to Huberman and Regev (2001) since these interviews share essential characteristics with the article about EntreMed Inc (NASDAQ:ENMD): The article constituted a burst of optimism released to a large audience on the front page of the New York Times, which was very suggestive of a genuine news event, distracting from its low actual information content. Similarly, CEO interviews on CNBC are broadcast to a large audience, CEOs have strong incentives to be very optimistic about their companies, and their mere appearance on television is suggestive of a genuine news event.
